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<title>3/sm</title>
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<!--Weave of '3/sr' generated by 7-->
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<ul class="crumbs"><li><a href="../webs.html">★</a></li><li><a href="index.html">if</a></li><li><a href="index.html#3">Chapter 3: Space and Time</a></li><li><b>Spatial Relations</b></li></ul><p class="purpose">A continuation of the Spatial plugin which defines the binary predicates corresponding to basic spatial relationships.</p>
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<ul class="toc"><li><a href="#SP1">§1. Definitions</a></li><li><a href="#SP3">§3. Initial stock</a></li><li><a href="#SP4">§4. Second stock</a></li><li><a href="#SP5">§5. Typechecking</a></li><li><a href="#SP6">§6. Assertion</a></li><li><a href="#SP7">§7. Compilation</a></li><li><a href="#SP8">§8. Problem message text</a></li></ul><hr class="tocbar">
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<p class="inwebparagraph"><a id="SP1"></a><b>§1. Definitions. </b></p>
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<p class="inwebparagraph"><a id="SP2"></a><b>§2. </b>So this section of code is all about the following:
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</p>
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<pre class="display">
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<span class="comment">fundamental spatial relationships</span>
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<span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">R_containment</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">R_support</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">R_incorporation</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">R_carrying</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">R_holding</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">R_wearing</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">room_containment_predicate</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="comment">indirect spatial relationships</span>
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<span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">R_visibility</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">R_touchability</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">R_concealment</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">R_enclosure</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="inwebparagraph"><a id="SP3"></a><b>§3. Initial stock. </b>These relations are all hard-wired in.
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</p>
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<pre class="display">
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<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">PL::SpatialRelations::REL_create_initial_stock</span><span class="plain">(</span><span class="reserved">void</span><span class="plain">) {</span>
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<<span class="cwebmacro">Make built-in spatial relationships</span> <span class="cwebmacronumber">3.1</span>><span class="plain">;</span>
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<<span class="cwebmacro">Make built-in indirect spatial relationships</span> <span class="cwebmacronumber">3.2</span>><span class="plain">;</span>
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<span class="functiontext">PL::MapDirections::create_relations</span><span class="plain">();</span>
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<span class="functiontext">PL::Regions::create_relations</span><span class="plain">();</span>
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<span class="plain">}</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">The function PL::SpatialRelations::REL_create_initial_stock appears nowhere else.</p>
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<p class="inwebparagraph"><a id="SP3_1"></a><b>§3.1. </b>Containment, support, incorporation, carrying, holding, wearing and
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possession. The "loop parent optimisation" is explained elsewhere, but
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the basic idea is that given a fixed y you can search for all x such
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that B(x, y) by looking at the object-tree children of y at run-time.
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On a large work of IF, this cuts the number of cases to check by a factor
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of 100 or more. (But it can't be used for component parts, since those are
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not stored in the I6 object tree; nor for the holding relation, since that's
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a union of the others, and therefore includes incorporation.)
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</p>
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<p class="macrodefinition"><code class="display">
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<<span class="cwebmacrodefn">Make built-in spatial relationships</span> <span class="cwebmacronumber">3.1</span>> =
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</code></p>
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<pre class="displaydefn">
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<span class="identifier">R_containment</span><span class="plain"> =</span>
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<span class="identifier">BinaryPredicates::make_pair</span><span class="plain">(</span><span class="identifier">SPATIAL_KBP</span><span class="plain">,</span>
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<span class="identifier">BinaryPredicates::full_new_term</span><span class="plain">(</span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">EMPTY_WORDING</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"ContainerOf(*1)"</span><span class="plain">)),</span>
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<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">NULL</span><span class="plain">),</span>
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<span class="identifier">I</span><span class="string">"contains"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"is-in"</span><span class="plain">,</span>
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<span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"MoveObject(*2,*1)"</span><span class="plain">), </span><span class="identifier">NULL</span><span class="plain">,</span>
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<span class="identifier">Preform::Nonparsing::wording</span><span class="plain">(<</span><span class="identifier">relation</span><span class="plain">-</span><span class="identifier">names</span><span class="plain">>, </span><span class="identifier">CONTAINMENT_RELATION_NAME</span><span class="plain">));</span>
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<span class="identifier">R_containment</span><span class="plain">-></span><span class="identifier">loop_parent_optimisation_proviso</span><span class="plain"> = </span><span class="string">"ContainerOf"</span><span class="plain">;</span>
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<span class="identifier">R_containment</span><span class="plain">-></span><span class="identifier">loop_parent_optimisation_ranger</span><span class="plain"> = </span><span class="string">"TestContainmentRange"</span><span class="plain">;</span>
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<span class="identifier">BinaryPredicates::set_index_details</span><span class="plain">(</span><span class="identifier">R_containment</span><span class="plain">, </span><span class="string">"container/room"</span><span class="plain">, </span><span class="string">"thing"</span><span class="plain">);</span>
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<span class="identifier">R_support</span><span class="plain"> =</span>
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<span class="identifier">BinaryPredicates::make_pair</span><span class="plain">(</span><span class="identifier">SPATIAL_KBP</span><span class="plain">,</span>
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<span class="identifier">BinaryPredicates::full_new_term</span><span class="plain">(</span><span class="identifier">infs_supporter</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">EMPTY_WORDING</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"SupporterOf(*1)"</span><span class="plain">)),</span>
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<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">infs_thing</span><span class="plain">),</span>
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<span class="identifier">I</span><span class="string">"supports"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"is-on"</span><span class="plain">,</span>
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<span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"MoveObject(*2,*1)"</span><span class="plain">), </span><span class="identifier">NULL</span><span class="plain">,</span>
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<span class="identifier">Preform::Nonparsing::wording</span><span class="plain">(<</span><span class="identifier">relation</span><span class="plain">-</span><span class="identifier">names</span><span class="plain">>, </span><span class="identifier">SUPPORT_RELATION_NAME</span><span class="plain">));</span>
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<span class="identifier">R_support</span><span class="plain">-></span><span class="identifier">loop_parent_optimisation_proviso</span><span class="plain"> = </span><span class="string">"SupporterOf"</span><span class="plain">;</span>
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<span class="identifier">R_incorporation</span><span class="plain"> =</span>
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<span class="identifier">BinaryPredicates::make_pair</span><span class="plain">(</span><span class="identifier">SPATIAL_KBP</span><span class="plain">,</span>
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<span class="identifier">BinaryPredicates::full_new_term</span><span class="plain">(</span><span class="identifier">infs_thing</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">EMPTY_WORDING</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"(*1.component_parent)"</span><span class="plain">)),</span>
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<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">infs_thing</span><span class="plain">),</span>
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<span class="identifier">I</span><span class="string">"incorporates"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"is-part-of"</span><span class="plain">,</span>
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<span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"MakePart(*2,*1)"</span><span class="plain">), </span><span class="identifier">NULL</span><span class="plain">,</span>
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<span class="identifier">Preform::Nonparsing::wording</span><span class="plain">(<</span><span class="identifier">relation</span><span class="plain">-</span><span class="identifier">names</span><span class="plain">>, </span><span class="identifier">INCORPORATION_RELATION_NAME</span><span class="plain">));</span>
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<span class="identifier">R_carrying</span><span class="plain"> =</span>
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<span class="identifier">BinaryPredicates::make_pair</span><span class="plain">(</span><span class="identifier">SPATIAL_KBP</span><span class="plain">,</span>
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<span class="identifier">BinaryPredicates::full_new_term</span><span class="plain">(</span><span class="identifier">infs_person</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">EMPTY_WORDING</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"CarrierOf(*1)"</span><span class="plain">)),</span>
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<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">infs_thing</span><span class="plain">),</span>
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<span class="identifier">I</span><span class="string">"carries"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"is-carried-by"</span><span class="plain">,</span>
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<span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"MoveObject(*2,*1)"</span><span class="plain">), </span><span class="identifier">NULL</span><span class="plain">,</span>
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<span class="identifier">Preform::Nonparsing::wording</span><span class="plain">(<</span><span class="identifier">relation</span><span class="plain">-</span><span class="identifier">names</span><span class="plain">>, </span><span class="identifier">CARRYING_RELATION_NAME</span><span class="plain">));</span>
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<span class="identifier">R_carrying</span><span class="plain">-></span><span class="identifier">loop_parent_optimisation_proviso</span><span class="plain"> = </span><span class="string">"CarrierOf"</span><span class="plain">;</span>
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<span class="identifier">R_holding</span><span class="plain"> =</span>
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<span class="identifier">BinaryPredicates::make_pair</span><span class="plain">(</span><span class="identifier">SPATIAL_KBP</span><span class="plain">,</span>
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<span class="identifier">BinaryPredicates::full_new_term</span><span class="plain">(</span><span class="identifier">infs_person</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">EMPTY_WORDING</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"HolderOf(*1)"</span><span class="plain">)),</span>
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<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">infs_thing</span><span class="plain">),</span>
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<span class="identifier">I</span><span class="string">"holds"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"is-held-by"</span><span class="plain">,</span>
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<span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"MoveObject(*2,*1)"</span><span class="plain">), </span><span class="identifier">NULL</span><span class="plain">,</span>
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<span class="identifier">Preform::Nonparsing::wording</span><span class="plain">(<</span><span class="identifier">relation</span><span class="plain">-</span><span class="identifier">names</span><span class="plain">>, </span><span class="identifier">HOLDING_RELATION_NAME</span><span class="plain">));</span>
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<span class="comment">can't be optimised, because parts are also held</span>
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<span class="identifier">R_wearing</span><span class="plain"> =</span>
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<span class="identifier">BinaryPredicates::make_pair</span><span class="plain">(</span><span class="identifier">SPATIAL_KBP</span><span class="plain">,</span>
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<span class="identifier">BinaryPredicates::full_new_term</span><span class="plain">(</span><span class="identifier">infs_person</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">EMPTY_WORDING</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"WearerOf(*1)"</span><span class="plain">)),</span>
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<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">infs_thing</span><span class="plain">),</span>
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<span class="identifier">I</span><span class="string">"wears"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"is-worn-by"</span><span class="plain">,</span>
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<span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"WearObject(*2,*1)"</span><span class="plain">), </span><span class="identifier">NULL</span><span class="plain">,</span>
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<span class="identifier">Preform::Nonparsing::wording</span><span class="plain">(<</span><span class="identifier">relation</span><span class="plain">-</span><span class="identifier">names</span><span class="plain">>, </span><span class="identifier">WEARING_RELATION_NAME</span><span class="plain">));</span>
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<span class="identifier">R_wearing</span><span class="plain">-></span><span class="identifier">loop_parent_optimisation_proviso</span><span class="plain"> = </span><span class="string">"WearerOf"</span><span class="plain">;</span>
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<span class="identifier">a_has_b_predicate</span><span class="plain"> =</span>
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<span class="identifier">BinaryPredicates::make_pair</span><span class="plain">(</span><span class="identifier">SPATIAL_KBP</span><span class="plain">,</span>
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<span class="identifier">BinaryPredicates::full_new_term</span><span class="plain">(</span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">EMPTY_WORDING</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"OwnerOf(*1)"</span><span class="plain">)),</span>
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<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">NULL</span><span class="plain">),</span>
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<span class="identifier">I</span><span class="string">"has"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"is-had-by"</span><span class="plain">,</span>
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<span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"MoveObject(*2,*1)"</span><span class="plain">), </span><span class="identifier">NULL</span><span class="plain">,</span>
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<span class="identifier">Preform::Nonparsing::wording</span><span class="plain">(<</span><span class="identifier">relation</span><span class="plain">-</span><span class="identifier">names</span><span class="plain">>, </span><span class="identifier">POSSESSION_RELATION_NAME</span><span class="plain">));</span>
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<span class="identifier">a_has_b_predicate</span><span class="plain">-></span><span class="identifier">loop_parent_optimisation_proviso</span><span class="plain"> = </span><span class="string">"OwnerOf"</span><span class="plain">;</span>
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<span class="identifier">BinaryPredicates::set_index_details</span><span class="plain">(</span><span class="identifier">a_has_b_predicate</span><span class="plain">, </span><span class="string">"person"</span><span class="plain">, </span><span class="string">"thing"</span><span class="plain">);</span>
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<span class="identifier">room_containment_predicate</span><span class="plain"> =</span>
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<span class="identifier">BinaryPredicates::make_pair</span><span class="plain">(</span><span class="identifier">SPATIAL_KBP</span><span class="plain">,</span>
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<span class="identifier">BinaryPredicates::full_new_term</span><span class="plain">(</span><span class="identifier">infs_room</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">EMPTY_WORDING</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"LocationOf(*1)"</span><span class="plain">)),</span>
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<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">infs_thing</span><span class="plain">),</span>
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<span class="identifier">I</span><span class="string">"is-room-of"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"is-in-room"</span><span class="plain">,</span>
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<span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"MoveObject(*2,*1)"</span><span class="plain">), </span><span class="identifier">NULL</span><span class="plain">,</span>
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<span class="identifier">Preform::Nonparsing::wording</span><span class="plain">(<</span><span class="identifier">relation</span><span class="plain">-</span><span class="identifier">names</span><span class="plain">>, </span><span class="identifier">ROOM_CONTAINMENT_RELATION_NAME</span><span class="plain">));</span>
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<span class="identifier">room_containment_predicate</span><span class="plain">-></span><span class="identifier">loop_parent_optimisation_proviso</span><span class="plain"> = </span><span class="string">"LocationOf"</span><span class="plain">;</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">This code is used in <a href="#SP3">§3</a>.</p>
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<p class="inwebparagraph"><a id="SP3_2"></a><b>§3.2. </b>Visibility, touchability, concealment and enclosure: all relations which
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can be tested at run-time, but which can't be asserted or made true or false.
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</p>
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<p class="macrodefinition"><code class="display">
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<<span class="cwebmacrodefn">Make built-in indirect spatial relationships</span> <span class="cwebmacronumber">3.2</span>> =
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</code></p>
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<pre class="displaydefn">
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<span class="identifier">R_visibility</span><span class="plain"> =</span>
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<span class="identifier">BinaryPredicates::make_pair</span><span class="plain">(</span><span class="identifier">SPATIAL_KBP</span><span class="plain">,</span>
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<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">infs_thing</span><span class="plain">),</span>
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<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">infs_thing</span><span class="plain">),</span>
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<span class="identifier">I</span><span class="string">"can-see"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"can-be-seen-by"</span><span class="plain">,</span>
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<span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"TestVisibility(*1,*2)"</span><span class="plain">),</span>
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<span class="identifier">Preform::Nonparsing::wording</span><span class="plain">(<</span><span class="identifier">relation</span><span class="plain">-</span><span class="identifier">names</span><span class="plain">>, </span><span class="identifier">VISIBILITY_RELATION_NAME</span><span class="plain">));</span>
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<span class="identifier">R_touchability</span><span class="plain"> =</span>
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<span class="identifier">BinaryPredicates::make_pair</span><span class="plain">(</span><span class="identifier">SPATIAL_KBP</span><span class="plain">,</span>
|
|
<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">infs_thing</span><span class="plain">),</span>
|
|
<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">infs_thing</span><span class="plain">),</span>
|
|
<span class="identifier">I</span><span class="string">"can-touch"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"can-be-touched-by"</span><span class="plain">,</span>
|
|
<span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"TestTouchability(*1,*2)"</span><span class="plain">),</span>
|
|
<span class="identifier">Preform::Nonparsing::wording</span><span class="plain">(<</span><span class="identifier">relation</span><span class="plain">-</span><span class="identifier">names</span><span class="plain">>, </span><span class="identifier">TOUCHABILITY_RELATION_NAME</span><span class="plain">));</span>
|
|
<span class="identifier">R_concealment</span><span class="plain"> =</span>
|
|
<span class="identifier">BinaryPredicates::make_pair</span><span class="plain">(</span><span class="identifier">SPATIAL_KBP</span><span class="plain">,</span>
|
|
<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">infs_thing</span><span class="plain">),</span>
|
|
<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">infs_thing</span><span class="plain">),</span>
|
|
<span class="identifier">I</span><span class="string">"conceals"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"is-concealed-by"</span><span class="plain">,</span>
|
|
<span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"TestConcealment(*1,*2)"</span><span class="plain">),</span>
|
|
<span class="identifier">Preform::Nonparsing::wording</span><span class="plain">(<</span><span class="identifier">relation</span><span class="plain">-</span><span class="identifier">names</span><span class="plain">>, </span><span class="identifier">CONCEALMENT_RELATION_NAME</span><span class="plain">));</span>
|
|
<span class="identifier">R_enclosure</span><span class="plain"> =</span>
|
|
<span class="identifier">BinaryPredicates::make_pair</span><span class="plain">(</span><span class="identifier">SPATIAL_KBP</span><span class="plain">,</span>
|
|
<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">Kinds::Knowledge::as_subject</span><span class="plain">(</span><span class="identifier">K_object</span><span class="plain">)),</span>
|
|
<span class="identifier">BinaryPredicates::new_term</span><span class="plain">(</span><span class="identifier">Kinds::Knowledge::as_subject</span><span class="plain">(</span><span class="identifier">K_object</span><span class="plain">)),</span>
|
|
<span class="identifier">I</span><span class="string">"encloses"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"is-enclosed-by"</span><span class="plain">,</span>
|
|
<span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">Calculus::Schemas::new</span><span class="plain">(</span><span class="string">"IndirectlyContains(*1,*2)"</span><span class="plain">),</span>
|
|
<span class="identifier">Preform::Nonparsing::wording</span><span class="plain">(<</span><span class="identifier">relation</span><span class="plain">-</span><span class="identifier">names</span><span class="plain">>, </span><span class="identifier">ENCLOSURE_RELATION_NAME</span><span class="plain">));</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP3">§3</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP4"></a><b>§4. Second stock. </b>There is none — this is a family of relations which is all built in.
|
|
</p>
|
|
|
|
|
|
<pre class="display">
|
|
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">PL::SpatialRelations::REL_create_second_stock</span><span class="plain">(</span><span class="reserved">void</span><span class="plain">) {</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function PL::SpatialRelations::REL_create_second_stock appears nowhere else.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP5"></a><b>§5. Typechecking. </b>No special rules apply.
|
|
</p>
|
|
|
|
|
|
<pre class="display">
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="functiontext">PL::SpatialRelations::REL_typecheck</span><span class="plain">(</span><span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">bp</span><span class="plain">,</span>
|
|
<span class="identifier">kind</span><span class="plain"> **</span><span class="identifier">kinds_of_terms</span><span class="plain">, </span><span class="identifier">kind</span><span class="plain"> **</span><span class="identifier">kinds_required</span><span class="plain">, </span><span class="identifier">tc_problem_kit</span><span class="plain"> *</span><span class="identifier">tck</span><span class="plain">) {</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">DECLINE_TO_MATCH</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function PL::SpatialRelations::REL_typecheck appears nowhere else.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP6"></a><b>§6. Assertion. </b>"In" requires delicate handling, because of the way that English uses it
|
|
sometimes transitively and sometimes not. "The passport is in the desk",
|
|
"The passport is in the Dining Room" and "The passport is in Venezuela"
|
|
place the same object in a container, a room or a region respectively.
|
|
</p>
|
|
|
|
|
|
<pre class="display">
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="functiontext">PL::SpatialRelations::REL_assert</span><span class="plain">(</span><span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">bp</span><span class="plain">,</span>
|
|
<span class="identifier">inference_subject</span><span class="plain"> *</span><span class="identifier">infs0</span><span class="plain">, </span><span class="identifier">parse_node</span><span class="plain"> *</span><span class="identifier">spec0</span><span class="plain">,</span>
|
|
<span class="identifier">inference_subject</span><span class="plain"> *</span><span class="identifier">infs1</span><span class="plain">, </span><span class="identifier">parse_node</span><span class="plain"> *</span><span class="identifier">spec1</span><span class="plain">) {</span>
|
|
<span class="identifier">instance</span><span class="plain"> *</span><span class="identifier">I0</span><span class="plain"> = </span><span class="identifier">InferenceSubjects::as_object_instance</span><span class="plain">(</span><span class="identifier">infs0</span><span class="plain">),</span>
|
|
<span class="plain">*</span><span class="identifier">I1</span><span class="plain"> = </span><span class="identifier">InferenceSubjects::as_object_instance</span><span class="plain">(</span><span class="identifier">infs1</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">I0</span><span class="plain">) && (</span><span class="identifier">I1</span><span class="plain">)) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">I1</span><span class="plain"> == </span><span class="identifier">I0</span><span class="plain">) {</span>
|
|
<span class="identifier">Problems::Issue::sentence_problem</span><span class="plain">(</span><span class="identifier">_p_</span><span class="plain">(</span><span class="identifier">PM_MiseEnAbyme</span><span class="plain">),</span>
|
|
<span class="string">"this asks to put something inside itself"</span><span class="plain">,</span>
|
|
<span class="string">"like saying 'the bottle is in the bottle'."</span><span class="plain">);</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">TRUE</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
<<span class="cwebmacro">Offer our dependent plugins a chance to assert the relation instead</span> <span class="cwebmacronumber">6.1</span>><span class="plain">;</span>
|
|
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">BinaryPredicates::can_be_made_true_at_runtime</span><span class="plain">(</span><span class="identifier">bp</span><span class="plain">) == </span><span class="identifier">FALSE</span><span class="plain">)</span>
|
|
<<span class="cwebmacro">Issue a problem message for an unassertable indirect spatial relation</span> <span class="cwebmacronumber">6.2</span>><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">bp</span><span class="plain"> == </span><span class="identifier">R_incorporation</span><span class="plain">) && (</span><span class="identifier">Instances::of_kind</span><span class="plain">(</span><span class="identifier">I0</span><span class="plain">, </span><span class="identifier">K_room</span><span class="plain">)))</span>
|
|
<<span class="cwebmacro">Issue a problem message for trying to subdivide a room</span> <span class="cwebmacronumber">6.3</span>><span class="plain">;</span>
|
|
|
|
<<span class="cwebmacro">Draw inferences using only the standard Spatial conventions</span> <span class="cwebmacronumber">6.4</span>><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">bp</span><span class="plain"> == </span><span class="identifier">R_wearing</span><span class="plain">)</span>
|
|
<<span class="cwebmacro">Assert the worn and wearable properties</span> <span class="cwebmacronumber">6.5</span>><span class="plain">;</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">TRUE</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">FALSE</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function PL::SpatialRelations::REL_assert appears nowhere else.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP6_1"></a><b>§6.1. </b>Note that Backdrops needs to take priority over Regions here; the case of
|
|
putting a backdrop inside a region clearly has to be implemented in some
|
|
way which isn't symmetrical between the two, and this way round is cleanest.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Offer our dependent plugins a chance to assert the relation instead</span> <span class="cwebmacronumber">6.1</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">PL::Backdrops::assert_relations</span><span class="plain">(</span><span class="identifier">bp</span><span class="plain">, </span><span class="identifier">I0</span><span class="plain">, </span><span class="identifier">I1</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">TRUE</span><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">PL::MapDirections::assert_relations</span><span class="plain">(</span><span class="identifier">bp</span><span class="plain">, </span><span class="identifier">I0</span><span class="plain">, </span><span class="identifier">I1</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">TRUE</span><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">PL::Regions::assert_relations</span><span class="plain">(</span><span class="identifier">bp</span><span class="plain">, </span><span class="identifier">I0</span><span class="plain">, </span><span class="identifier">I1</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="identifier">TRUE</span><span class="plain">;</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP6">§6</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP6_2"></a><b>§6.2. </b>This is the point at which non-assertable relations are thrown out.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Issue a problem message for an unassertable indirect spatial relation</span> <span class="cwebmacronumber">6.2</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="identifier">Problems::Issue::sentence_problem</span><span class="plain">(</span><span class="identifier">_p_</span><span class="plain">(</span><span class="identifier">PM_Unassertable</span><span class="plain">),</span>
|
|
<span class="string">"the relationship you describe is not exact enough"</span><span class="plain">,</span>
|
|
<span class="string">"so that I do not know how to make this assertion come true. "</span>
|
|
<span class="string">"For instance, saying 'The Study is adjacent to the Hallway.' "</span>
|
|
<span class="string">"is not good enough because I need to know in what direction: "</span>
|
|
<span class="string">"is it east of the Hallway, perhaps, or west?"</span><span class="plain">);</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">TRUE</span><span class="plain">;</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP6">§6</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP6_3"></a><b>§6.3. </b>People sometimes try, a little hopefully, to subdivide rooms. Alas for them.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Issue a problem message for trying to subdivide a room</span> <span class="cwebmacronumber">6.3</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="identifier">Problems::Issue::sentence_problem</span><span class="plain">(</span><span class="identifier">_p_</span><span class="plain">(</span><span class="identifier">PM_PartOfRoom</span><span class="plain">),</span>
|
|
<span class="string">"this asks to make something a part of a room"</span><span class="plain">,</span>
|
|
<span class="string">"when only things are allowed to have parts."</span><span class="plain">);</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">TRUE</span><span class="plain">;</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP6">§6</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP6_4"></a><b>§6.4. </b>So we can forget about the complications of backdrops and regions now.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Draw inferences using only the standard Spatial conventions</span> <span class="cwebmacronumber">6.4</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="identifier">inference_subject</span><span class="plain"> *</span><span class="identifier">item</span><span class="plain"> = </span><span class="identifier">Instances::as_subject</span><span class="plain">(</span><span class="identifier">I1</span><span class="plain">);</span>
|
|
<span class="identifier">inference_subject</span><span class="plain"> *</span><span class="identifier">loc</span><span class="plain"> = </span><span class="identifier">Instances::as_subject</span><span class="plain">(</span><span class="identifier">I0</span><span class="plain">);</span>
|
|
<span class="identifier">World::Inferences::draw</span><span class="plain">(</span><span class="constant">PART_OF_INF</span><span class="plain">, </span><span class="identifier">item</span><span class="plain">,</span>
|
|
<span class="plain">(</span><span class="identifier">bp</span><span class="plain"> == </span><span class="identifier">R_incorporation</span><span class="plain">)?</span><span class="identifier">CERTAIN_CE</span><span class="plain">:</span><span class="identifier">IMPOSSIBLE_CE</span><span class="plain">,</span>
|
|
<span class="identifier">loc</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">bp</span><span class="plain"> == </span><span class="identifier">R_containment</span><span class="plain">)</span>
|
|
<span class="identifier">World::Inferences::draw</span><span class="plain">(</span><span class="constant">CONTAINS_THINGS_INF</span><span class="plain">, </span><span class="identifier">loc</span><span class="plain">, </span><span class="identifier">CERTAIN_CE</span><span class="plain">, </span><span class="identifier">item</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
|
|
<span class="identifier">World::Inferences::draw</span><span class="plain">(</span><span class="constant">PARENTAGE_INF</span><span class="plain">, </span><span class="identifier">item</span><span class="plain">, </span><span class="identifier">CERTAIN_CE</span><span class="plain">, </span><span class="identifier">loc</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
|
|
<span class="identifier">World::Inferences::draw</span><span class="plain">(</span><span class="constant">IS_ROOM_INF</span><span class="plain">, </span><span class="identifier">item</span><span class="plain">, </span><span class="identifier">IMPOSSIBLE_CE</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP6">§6</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP6_5"></a><b>§6.5. </b>If something is being worn, it needs to have the I7 either/or property
|
|
"wearable" and also the I6-only attribute <code class="display"><span class="extract">worn</span></code>. (Arguably Clothing ought
|
|
to be a plugin of its own, but the compiler needs to do hardly anything
|
|
special to make it work, so this doesn't seem worth the trouble.)
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Assert the worn and wearable properties</span> <span class="cwebmacronumber">6.5</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="identifier">inference_subject</span><span class="plain"> *</span><span class="identifier">item</span><span class="plain"> = </span><span class="identifier">Instances::as_subject</span><span class="plain">(</span><span class="identifier">I1</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">P_wearable</span><span class="plain">)</span>
|
|
<span class="identifier">World::Inferences::draw_property</span><span class="plain">(</span><span class="identifier">item</span><span class="plain">, </span><span class="identifier">P_wearable</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">P_worn</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) {</span>
|
|
<span class="identifier">P_worn</span><span class="plain"> = </span><span class="identifier">Properties::EitherOr::new_nameless</span><span class="plain">(</span><span class="identifier">L</span><span class="string">"worn"</span><span class="plain">);</span>
|
|
<span class="identifier">Properties::EitherOr::implement_as_attribute</span><span class="plain">(</span><span class="identifier">P_worn</span><span class="plain">, </span><span class="identifier">TRUE</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
<span class="identifier">World::Inferences::draw_property</span><span class="plain">(</span><span class="identifier">item</span><span class="plain">, </span><span class="identifier">P_worn</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP6">§6</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP7"></a><b>§7. Compilation. </b>We need do nothing special: these relations can be compiled from their schemas.
|
|
</p>
|
|
|
|
|
|
<pre class="display">
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="functiontext">PL::SpatialRelations::REL_compile</span><span class="plain">(</span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">task</span><span class="plain">, </span><span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">bp</span><span class="plain">, </span><span class="identifier">annotated_i6_schema</span><span class="plain"> *</span><span class="identifier">asch</span><span class="plain">) {</span>
|
|
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">FALSE</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function PL::SpatialRelations::REL_compile appears nowhere else.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP8"></a><b>§8. Problem message text. </b></p>
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<pre class="display">
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<span class="reserved">int</span><span class="plain"> </span><span class="functiontext">PL::SpatialRelations::REL_describe_for_problems</span><span class="plain">(</span><span class="identifier">OUTPUT_STREAM</span><span class="plain">, </span><span class="identifier">binary_predicate</span><span class="plain"> *</span><span class="identifier">bp</span><span class="plain">) {</span>
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<span class="reserved">return</span><span class="plain"> </span><span class="identifier">FALSE</span><span class="plain">;</span>
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<span class="plain">}</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">The function PL::SpatialRelations::REL_describe_for_problems appears nowhere else.</p>
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<hr class="tocbar">
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<ul class="toc"><li><a href="3-sm.html">Back to 'Spatial Model'</a></li><li><a href="3-tp.html">Continue with 'The Player'</a></li></ul><hr class="tocbar">
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