Merge pull request #76470 from MewPurPur/add-immediate-mesh-example

Provide an example on how to use ImmediateMesh

doc/classes/Expression.xml

@@ -49,6 +49,7 @@
  [/codeblocks]
  </description>
  <tutorials>
+ <link title="Evaluating Expressions">$DOCS_URL/tutorials/scripting/evaluating_expressions.html</link>
  </tutorials>
  <methods>
  <method name="execute">

doc/classes/ImmediateMesh.xml

@@ -4,9 +4,20 @@
  Mesh optimized for creating geometry manually.
  </brief_description>
  <description>
- Mesh optimized for creating geometry manually, similar to OpenGL1.x immediate mode.
+ A mesh type optimized for creating geometry manually, similar to OpenGL 1.x immediate mode.
+ Here's a sample on how to generate a triangular face:
+ [codeblocks]
+ var mesh = ImmediateMesh.new()
+ mesh.surface_begin(Mesh.PRIMITIVE_TRIANGLES)
+ mesh.surface_add_vertex(Vector3.LEFT)
+ mesh.surface_add_vertex(Vector3.FORWARD)
+ mesh.surface_add_vertex(Vector3.ZERO)
+ mesh.surface_end()
+ [/codeblocks]
+ [b]Note:[/b] Generating complex geometries with [ImmediateMesh] is highly inefficient. Instead, it is designed to generate simple geometry that changes often.
  </description>
  <tutorials>
+ <link title="Using ImmediateMesh">$DOCS_URL/tutorials/3d/procedural_geometry/immediatemesh.html</link>
  </tutorials>
  <methods>
  <method name="clear_surfaces">