[2798] | 1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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[982] | 2 | /* |
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| 3 | * ---------------------------------------------------------------------- |
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| 4 | * ConvexPolygon.h: convex polygon class |
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| 5 | * |
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| 6 | * ====================================================================== |
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| 7 | * AUTHOR: Wei Qiao <qiaow@purdue.edu> |
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| 8 | * Purdue Rendering and Perceptualization Lab (PURPL) |
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| 9 | * |
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[3177] | 10 | * Copyright (c) 2004-2012 HUBzero Foundation, LLC |
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[982] | 11 | * |
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| 12 | * See the file "license.terms" for information on usage and |
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| 13 | * redistribution of this file, and for a DISCLAIMER OF ALL WARRANTIES. |
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| 14 | * ====================================================================== |
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| 15 | */ |
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| 16 | #ifndef _CONVEX_POLYGON_H_ |
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| 17 | #define _CONVEX_POLYGON_H_ |
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| 18 | |
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| 19 | #include <assert.h> |
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| 20 | #include <vector> |
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| 21 | |
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[3492] | 22 | #include <vrmath/Vector3f.h> |
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| 23 | #include <vrmath/Vector4f.h> |
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| 24 | #include <vrmath/Matrix4x4d.h> |
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| 25 | |
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[2822] | 26 | #include "Plane.h" |
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| 27 | |
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[3492] | 28 | typedef std::vector<vrmath::Vector4f> VertexVector; |
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| 29 | typedef std::vector<vrmath::Vector4f> TexVector; |
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[982] | 30 | |
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[2822] | 31 | class ConvexPolygon |
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| 32 | { |
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[982] | 33 | public: |
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[2822] | 34 | ConvexPolygon() |
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| 35 | {} |
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| 36 | |
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[982] | 37 | ConvexPolygon(VertexVector vertices); |
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[2822] | 38 | |
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[3492] | 39 | void transform(const vrmath::Matrix4x4d& mat); |
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[2822] | 40 | |
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[3492] | 41 | void translate(const vrmath::Vector4f& shift); |
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[2822] | 42 | |
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[982] | 43 | // Clips the polygon, retaining the portion where ax + by + cz + d >= 0 |
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[3492] | 44 | bool clip(nv::Plane& clipPlane, bool copyToTexcoords); |
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[2822] | 45 | |
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[2877] | 46 | void emit(bool useTexture); |
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[2822] | 47 | |
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[3492] | 48 | void emit(bool useTexture, const vrmath::Vector3f& shift, const vrmath::Vector3f& scale); |
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[2822] | 49 | |
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[2877] | 50 | void copyVerticesToTexcoords(); |
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[982] | 51 | |
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[2877] | 52 | void setId(int id) |
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[2822] | 53 | { |
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[2877] | 54 | volumeId = id; |
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[982] | 55 | } |
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[2822] | 56 | |
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[3492] | 57 | void appendVertex(const vrmath::Vector4f& vert) |
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[2822] | 58 | { |
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| 59 | vertices.push_back(vert); |
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[982] | 60 | } |
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[2822] | 61 | |
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[3492] | 62 | void insertVertex(unsigned int index, const vrmath::Vector4f& vert) |
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[2822] | 63 | { |
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[2877] | 64 | assert(index < vertices.size()); |
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[2822] | 65 | vertices.insert(vertices.begin() + index, vert); |
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[982] | 66 | } |
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[2822] | 67 | |
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[2877] | 68 | VertexVector vertices; |
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| 69 | TexVector texcoords; |
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| 70 | int volumeId; //which volume this polygon slice belongs to |
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[982] | 71 | }; |
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| 72 | |
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| 73 | #endif |
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