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65 lines
2.6 KiB
Plaintext
Executable File
65 lines
2.6 KiB
Plaintext
Executable File
-- File: Graphic3d_ArrayOfTriangleFans.cdl
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-- Created: 04/01/01 : GG : G005 : Draw ARRAY primitives
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--
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class ArrayOfTriangleFans from Graphic3d inherits ArrayOfPrimitives from Graphic3d
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is
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-- constructor
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Create (
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maxVertexs: Integer from Standard;
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maxFans: Integer from Standard = 0;
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hasVNormals: Boolean from Standard = Standard_False;
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hasVColors: Boolean from Standard = Standard_False;
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hasFColors: Boolean from Standard = Standard_False;
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hasTexels: Boolean from Standard = Standard_False)
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returns mutable ArrayOfTriangleFans from Graphic3d;
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---Purpose: Creates an array of triangle fans,
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-- a polygon can be filled as:
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-- 1) creating a single fan defined with his vertexs.
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-- i.e:
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-- myArray = Graphic3d_ArrayOfTriangleFans(7)
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-- myArray->AddVertex(x1,y1,z1)
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-- ....
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-- myArray->AddVertex(x7,y7,z7)
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-- 2) creating separate fans defined with a predefined
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-- number of fans and the number of vertex per fan.
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-- i.e:
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-- myArray = Graphic3d_ArrayOfTriangleFans(8,2)
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-- myArray->AddBound(4)
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-- myArray->AddVertex(x1,y1,z1)
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-- ....
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-- myArray->AddVertex(x4,y4,z4)
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-- myArray->AddBound(4)
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-- myArray->AddVertex(x5,y5,z5)
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-- ....
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-- myArray->AddVertex(x8,y8,z8)
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--
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-- <maxVertexs> defined the maximun allowed vertex number in the array.
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-- <maxFans> defined the maximun allowed fan number in the array.
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-- The number of triangle really drawn is :
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-- VertexNumber()-2*Min(1,BoundNumber())
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---Warning:
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-- When <hasVNormals> is TRUE , you must use one of
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-- AddVertex(Point,Normal)
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-- or AddVertex(Point,Normal,Color)
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-- or AddVertex(Point,Normal,Texel) methods.
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-- When <hasVColors> is TRUE , you must use one of
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-- AddVertex(Point,Color)
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-- or AddVertex(Point,Normal,Color) methods.
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-- When <hasTexels> is TRUE , you must use one of
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-- AddVertex(Point,Texel)
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-- or AddVertex(Point,Normal,Texel) methods.
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-- When <hasBColors> is TRUE , <maxBounds> must be > 0 and
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-- you must use the
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-- AddBound(number,Color) method.
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-- Warning:
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-- the user is responsible about the orientation of the fan
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-- depending of the order of the created vertex and this
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-- orientation must be coherent with the vertex normal optionnaly
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-- given at each vertex (See the Orientate() methods).
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end;
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