[2798] | 1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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[379] | 2 | /* |
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| 3 | * ---------------------------------------------------------------------- |
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| 4 | * ColorMap.h: color map class contains an array of (RGBA) values |
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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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[3502] | 10 | * Copyright (c) 2004-2013 HUBzero Foundation, LLC |
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[379] | 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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[2820] | 16 | #ifndef TRANSFER_FUNCTION_H |
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| 17 | #define TRANSFER_FUNCTION_H |
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[379] | 18 | |
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[3568] | 19 | #include <string> |
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| 20 | |
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[3492] | 21 | #include <vrmath/Vector3f.h> |
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| 22 | |
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[379] | 23 | #include "Texture1D.h" |
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| 24 | |
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[3463] | 25 | class TransferFunction |
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[2820] | 26 | { |
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[973] | 27 | public: |
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[3568] | 28 | TransferFunction(const char *name, int size, float *data); |
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[2831] | 29 | |
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[973] | 30 | void update(float *data); |
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[2831] | 31 | |
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[973] | 32 | void update(int size, float *data); |
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[2831] | 33 | |
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| 34 | GLuint id() |
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| 35 | { |
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| 36 | return _id; |
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[1493] | 37 | } |
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[2831] | 38 | |
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| 39 | void id(GLuint id) |
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| 40 | { |
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| 41 | _id = id; |
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[1493] | 42 | } |
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[2831] | 43 | |
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| 44 | Texture1D *getTexture() |
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| 45 | { |
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| 46 | return _tex; |
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[973] | 47 | } |
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[2831] | 48 | |
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| 49 | float *getData() |
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| 50 | { |
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| 51 | return _data; |
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[973] | 52 | } |
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[2831] | 53 | |
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| 54 | int getSize() const |
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| 55 | { |
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| 56 | return _size; |
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[1493] | 57 | } |
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[2831] | 58 | |
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| 59 | const char *name() const |
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| 60 | { |
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[3568] | 61 | return _name.c_str(); |
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[1493] | 62 | } |
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[2831] | 63 | |
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[4819] | 64 | static void sample(float fraction, float *keys, vrmath::Vector3f *keyValues, int count, vrmath::Vector3f *ret); |
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[2831] | 65 | |
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[4819] | 66 | static void sample(float fraction, float *keys, float *keyValues, int count, float *ret); |
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[2831] | 67 | |
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| 68 | protected : |
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| 69 | ~TransferFunction(); |
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| 70 | |
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| 71 | private: |
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[2844] | 72 | /// the resolution of the color map, how many (RGBA) quadraples |
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| 73 | int _size; |
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| 74 | float *_data; |
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| 75 | Texture1D *_tex; ///< the texture storing the colors |
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[3568] | 76 | std::string _name; |
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[2844] | 77 | GLuint _id; ///< OpenGL texture identifier |
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[379] | 78 | }; |
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| 79 | |
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| 80 | #endif |
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