[2798] | 1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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[982] | 2 | /* |
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[4889] | 3 | * Copyright (c) 2004-2013 HUBzero Foundation, LLC |
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[982] | 4 | * |
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[4889] | 5 | * Authors: |
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| 6 | * Wei Qiao <qiaow@purdue.edu> |
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[982] | 7 | */ |
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[4889] | 8 | #ifndef NV_CONVEX_POLYGON_H |
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| 9 | #define NV_CONVEX_POLYGON_H |
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[982] | 10 | |
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| 11 | #include <assert.h> |
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| 12 | #include <vector> |
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| 13 | |
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[3492] | 14 | #include <vrmath/Vector3f.h> |
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| 15 | #include <vrmath/Vector4f.h> |
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| 16 | #include <vrmath/Matrix4x4d.h> |
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| 17 | |
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[2822] | 18 | #include "Plane.h" |
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| 19 | |
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[4889] | 20 | namespace nv { |
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| 21 | |
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[3492] | 22 | typedef std::vector<vrmath::Vector4f> VertexVector; |
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| 23 | typedef std::vector<vrmath::Vector4f> TexVector; |
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[982] | 24 | |
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[2822] | 25 | class ConvexPolygon |
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| 26 | { |
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[982] | 27 | public: |
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[2822] | 28 | ConvexPolygon() |
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| 29 | {} |
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| 30 | |
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[982] | 31 | ConvexPolygon(VertexVector vertices); |
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[2822] | 32 | |
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[3492] | 33 | void transform(const vrmath::Matrix4x4d& mat); |
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[2822] | 34 | |
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[3492] | 35 | void translate(const vrmath::Vector4f& shift); |
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[2822] | 36 | |
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[982] | 37 | // Clips the polygon, retaining the portion where ax + by + cz + d >= 0 |
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[3492] | 38 | bool clip(nv::Plane& clipPlane, bool copyToTexcoords); |
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[2822] | 39 | |
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[2877] | 40 | void emit(bool useTexture); |
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[2822] | 41 | |
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[3492] | 42 | void emit(bool useTexture, const vrmath::Vector3f& shift, const vrmath::Vector3f& scale); |
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[2822] | 43 | |
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[2877] | 44 | void copyVerticesToTexcoords(); |
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[982] | 45 | |
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[2877] | 46 | void setId(int id) |
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[2822] | 47 | { |
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[2877] | 48 | volumeId = id; |
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[982] | 49 | } |
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[2822] | 50 | |
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[3492] | 51 | void appendVertex(const vrmath::Vector4f& vert) |
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[2822] | 52 | { |
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| 53 | vertices.push_back(vert); |
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[982] | 54 | } |
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[2822] | 55 | |
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[3492] | 56 | void insertVertex(unsigned int index, const vrmath::Vector4f& vert) |
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[2822] | 57 | { |
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[2877] | 58 | assert(index < vertices.size()); |
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[2822] | 59 | vertices.insert(vertices.begin() + index, vert); |
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[982] | 60 | } |
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[2822] | 61 | |
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[2877] | 62 | VertexVector vertices; |
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| 63 | TexVector texcoords; |
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| 64 | int volumeId; //which volume this polygon slice belongs to |
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[982] | 65 | }; |
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| 66 | |
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[4889] | 67 | } |
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| 68 | |
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[982] | 69 | #endif |
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