2004-05-30 11:09:46 +00:00
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# $Id$
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2004-05-24 07:49:50 +00:00
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# Documentation for KX_MeshProxy
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class KX_MeshProxy:
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"""
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A mesh object.
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You can only change the vertex properties of a mesh object, not the mesh topology.
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2004-06-07 11:03:12 +00:00
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To use mesh objects effectively, you should know a bit about how the game engine handles them.
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1. Mesh Objects are converted from Blender at scene load.
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2. The Converter groups polygons by Material. This means they can be sent to the
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renderer efficiently. A material holds:
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1. The texture.
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2. The Blender material.
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3. The Tile properties
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4. The face properties - (From the "Texture Face" panel)
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5. Transparency & z sorting
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6. Light layer
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7. Polygon shape (triangle/quad)
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8. Game Object
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3. Verticies will be split by face if necessary. Verticies can only be shared between
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faces if:
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1. They are at the same position
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2. UV coordinates are the same
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3. Their normals are the same (both polygons are "Set Smooth")
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4. They are the same colour
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For example: a cube has 24 verticies: 6 faces with 4 verticies per face.
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The correct method of iterating over every L{KX_VertexProxy} in a game object::
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import GameLogic
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co = GameLogic.getcurrentController()
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obj = co.getOwner()
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m_i = 0
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mesh = obj.getMesh(m_i) # There can be more than one mesh...
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while mesh != None:
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for mat in range(mesh.getNumMaterials()):
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for v_index in range(mesh.getVertexArrayLength(mat)):
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vertex = mesh.getVertex(mat, v_index)
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# Do something with vertex here...
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# ... eg: colour the vertex red.
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vertex.colour = [1.0, 0.0, 0.0, 1.0]
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m_i += 1
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mesh = obj.getMesh(m_i)
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2004-05-24 07:49:50 +00:00
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"""
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2004-06-07 11:03:12 +00:00
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def getNumMaterials():
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2004-05-24 07:49:50 +00:00
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"""
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Gets the number of materials associated with this object.
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2004-05-31 13:06:04 +00:00
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@rtype: integer
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2004-05-24 07:49:50 +00:00
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"""
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2004-06-07 11:03:12 +00:00
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def getMaterialName(matid):
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2004-05-24 07:49:50 +00:00
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"""
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Gets the name of the specified material.
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@type matid: integer
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@param matid: the specified material.
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@rtype: string
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@return: the attached material name.
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"""
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2004-06-07 11:03:12 +00:00
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def getTextureName(matid):
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2004-05-24 07:49:50 +00:00
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"""
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Gets the name of the specified material's texture.
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@type matid: integer
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@param matid: the specified material
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@rtype: string
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@return: the attached material's texture name.
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"""
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2004-06-07 11:03:12 +00:00
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def getVertexArrayLength(matid):
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2004-05-24 07:49:50 +00:00
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"""
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Gets the length of the vertex array associated with the specified material.
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There is one vertex array for each material.
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@type matid: integer
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@param matid: the specified material
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@rtype: integer
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@return: the number of verticies in the vertex array.
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"""
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2004-06-07 11:03:12 +00:00
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def getVertex(matid, index):
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2004-05-24 07:49:50 +00:00
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"""
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Gets the specified vertex from the mesh object.
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@type matid: integer
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@param matid: the specified material
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@type index: integer
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@param index: the index into the vertex array.
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2004-06-02 12:43:27 +00:00
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@rtype: L{KX_VertexProxy}
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2004-05-31 13:06:04 +00:00
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@return: a vertex object.
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2004-05-24 07:49:50 +00:00
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"""
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