| 1 | /*
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| 2 | * ----------------------------------------------------------------------
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| 3 | * ConvexPolygon.h: convex polygon class
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| 4 | *
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| 5 | * ======================================================================
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| 6 | * AUTHOR: Wei Qiao <qiaow@purdue.edu>
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| 7 | * Purdue Rendering and Perceptualization Lab (PURPL)
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| 8 | *
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| 9 | * Copyright (c) 2004-2006 Purdue Research Foundation
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| 10 | *
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| 11 | * See the file "license.terms" for information on usage and
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| 12 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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| 13 | * ======================================================================
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| 14 | */
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| 15 | #ifndef _CONVEX_POLYGON_H_
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| 16 | #define _CONVEX_POLYGON_H_
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| 17 |
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| 18 | #include "Vector4.h"
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| 19 | #include "Plane.h"
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| 20 | #include <vector>
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| 21 |
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| 22 | typedef std::vector<Vector4> VertexVector;
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| 23 | typedef std::vector<Vector4> TexVector;
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| 24 |
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| 25 | class ConvexPolygon {
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| 26 | public:
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| 27 | VertexVector vertices;
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| 28 | TexVector texcoords;
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| 29 | int volume_id; //which volume this polygon slice belongs to
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| 30 |
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| 31 | ConvexPolygon();
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| 32 | ConvexPolygon(VertexVector vertices);
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| 33 |
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| 34 | void append_vertex(Vector4 vert);
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| 35 | void insert_vertex(unsigned int index, Vector4 vert);
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| 36 | void transform(Mat4x4 mat);
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| 37 | void translate(Vector4 shift);
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| 38 |
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| 39 | // Clips the polygon, retaining the portion where ax + by + cz + d >= 0
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| 40 | void clip(Plane &clipPlane, bool copy_to_texcoords);
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| 41 | void Emit(bool use_texture);
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| 42 | void Emit(bool use_texture, Vector3& shift, Vector3& scale);
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| 43 | void copy_vertices_to_texcoords();
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| 44 | void set_id(int v_id);
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| 45 | };
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| 46 |
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| 47 | #endif
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