Onyx2D/O2Paint_ramp.h

   1 /*------------------------------------------------------------------------
   2  *
   3  * Derivative of the OpenVG 1.0.1 Reference Implementation
   4  * -------------------------------------
   5  *
   6  * Copyright (c) 2007 The Khronos Group Inc.
   7  *
   8  * Permission is hereby granted, free of charge, to any person obtaining a
   9  * copy of this software and /or associated documentation files
  10  * (the "Materials "), to deal in the Materials without restriction,
  11  * including without limitation the rights to use, copy, modify, merge,
  12  * publish, distribute, sublicense, and/or sell copies of the Materials,
  13  * and to permit persons to whom the Materials are furnished to do so,
  14  * subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Materials.
  18  *
  19  * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  20  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  22  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
  23  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  24  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR
  25  * THE USE OR OTHER DEALINGS IN THE MATERIALS.
  26  *
  27  *-------------------------------------------------------------------*/
  28 #import <Onyx2D/O2Paint.h>
  29
  30 @class O2Shading;
  31
  32 typedef struct {
  33     O2Float offset;
  34     O2argb32f color32f;
  35     O2argb8u color8u;
  36 } GradientStop;
  37
  38 @interface O2Paint_ramp : O2Paint {
  39     O2Point _startPoint;
  40     O2Point _endPoint;
  41     BOOL _extendStart;
  42     BOOL _extendEnd;
  43
  44     size_t _numberOfColorStops;
  45     GradientStop *_colorStops;
  46 }
  47
  48 O2argb32f O2PaintIntegrateColorRamp(O2Paint_ramp *self, O2Float gmin, O2Float gmax);
  49 O2argb32f O2PaintColorRamp(O2Paint_ramp *self, O2Float gradient, O2Float rho, int *skip);
  50
  51 - initWithShading:(O2Shading *)shading deviceTransform:(O2AffineTransform)deviceTransform numberOfSamples:(int)numberOfSamples;
  52
  53 @end