|
1 #ifndef __RIPIXELPIPE_H |
|
2 #define __RIPIXELPIPE_H |
|
3 |
|
4 /*------------------------------------------------------------------------ |
|
5 * |
|
6 * OpenVG 1.1 Reference Implementation |
|
7 * ----------------------------------- |
|
8 * |
|
9 * Copyright (c) 2007 The Khronos Group Inc. |
|
10 * |
|
11 * Permission is hereby granted, free of charge, to any person obtaining a |
|
12 * copy of this software and /or associated documentation files |
|
13 * (the "Materials "), to deal in the Materials without restriction, |
|
14 * including without limitation the rights to use, copy, modify, merge, |
|
15 * publish, distribute, sublicense, and/or sell copies of the Materials, |
|
16 * and to permit persons to whom the Materials are furnished to do so, |
|
17 * subject to the following conditions: |
|
18 * |
|
19 * The above copyright notice and this permission notice shall be included |
|
20 * in all copies or substantial portions of the Materials. |
|
21 * |
|
22 * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
|
23 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
|
24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
|
25 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
|
26 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR |
|
27 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR |
|
28 * THE USE OR OTHER DEALINGS IN THE MATERIALS. |
|
29 * |
|
30 *//** |
|
31 * \file |
|
32 * \brief Paint and PixelPipe classes. |
|
33 * \note |
|
34 *//*-------------------------------------------------------------------*/ |
|
35 |
|
36 #ifndef __RIMATH_H |
|
37 #include "riMath.h" |
|
38 #endif |
|
39 |
|
40 #ifndef __RIIMAGE_H |
|
41 #include "riImage.h" |
|
42 #endif |
|
43 |
|
44 //======================================================================= |
|
45 |
|
46 namespace OpenVGRI |
|
47 { |
|
48 |
|
49 /*-------------------------------------------------------------------*//*! |
|
50 * \brief Storage and operations for VGPaint. |
|
51 * \param |
|
52 * \return |
|
53 * \note |
|
54 *//*-------------------------------------------------------------------*/ |
|
55 |
|
56 class Paint |
|
57 { |
|
58 public: |
|
59 Paint(); |
|
60 ~Paint(); |
|
61 void addReference() { m_referenceCount++; } |
|
62 int removeReference() { m_referenceCount--; RI_ASSERT(m_referenceCount >= 0); return m_referenceCount; } |
|
63 |
|
64 struct GradientStop |
|
65 { |
|
66 GradientStop() : offset(0.0f), color(0.0f, 0.0f, 0.0f, 0.0f, Color::sRGBA) {} |
|
67 RIfloat offset; |
|
68 Color color; |
|
69 }; |
|
70 |
|
71 VGPaintType m_paintType; |
|
72 Color m_paintColor; |
|
73 Color m_inputPaintColor; |
|
74 VGColorRampSpreadMode m_colorRampSpreadMode; |
|
75 Array<GradientStop> m_colorRampStops; |
|
76 Array<GradientStop> m_inputColorRampStops; |
|
77 VGboolean m_colorRampPremultiplied; |
|
78 Vector2 m_inputLinearGradientPoint0; |
|
79 Vector2 m_inputLinearGradientPoint1; |
|
80 Vector2 m_inputRadialGradientCenter; |
|
81 Vector2 m_inputRadialGradientFocalPoint; |
|
82 RIfloat m_inputRadialGradientRadius; |
|
83 Vector2 m_linearGradientPoint0; |
|
84 Vector2 m_linearGradientPoint1; |
|
85 Vector2 m_radialGradientCenter; |
|
86 Vector2 m_radialGradientFocalPoint; |
|
87 RIfloat m_radialGradientRadius; |
|
88 VGTilingMode m_patternTilingMode; |
|
89 Image* m_pattern; |
|
90 private: |
|
91 Paint(const Paint&); //!< Not allowed. |
|
92 const Paint& operator=(const Paint&); //!< Not allowed. |
|
93 |
|
94 int m_referenceCount; |
|
95 }; |
|
96 |
|
97 /*-------------------------------------------------------------------*//*! |
|
98 * \brief Encapsulates all information needed for painting a pixel. |
|
99 * \param |
|
100 * \return |
|
101 * \note |
|
102 *//*-------------------------------------------------------------------*/ |
|
103 |
|
104 class PixelPipe |
|
105 { |
|
106 public: |
|
107 PixelPipe(); //throws bad_alloc |
|
108 ~PixelPipe(); |
|
109 |
|
110 void pixelPipe(int x, int y, RIfloat coverage, unsigned int sampleMask) const; //rasterizer calls this function for each pixel |
|
111 |
|
112 void setDrawable(Drawable* drawable); |
|
113 void setBlendMode(VGBlendMode blendMode); |
|
114 void setMask(bool masking); |
|
115 void setImage(Image* image, VGImageMode imageMode); //image = NULL disables drawImage functionality |
|
116 void setSurfaceToPaintMatrix(const Matrix3x3& surfaceToPaintMatrix); |
|
117 void setSurfaceToImageMatrix(const Matrix3x3& surfaceToImageMatrix); |
|
118 void setImageQuality(VGImageQuality imageQuality); |
|
119 void setTileFillColor(const Color& c); |
|
120 void setPaint(const Paint* paint); |
|
121 void setColorTransform(bool enable, RIfloat values[8]); |
|
122 |
|
123 private: |
|
124 void linearGradient(RIfloat& g, RIfloat& rho, RIfloat x, RIfloat y) const; |
|
125 void radialGradient(RIfloat& g, RIfloat& rho, RIfloat x, RIfloat y) const; |
|
126 Color integrateColorRamp(RIfloat gmin, RIfloat gmax) const; |
|
127 Color colorRamp(RIfloat gradient, RIfloat rho) const; |
|
128 Color blend(const Color& s, RIfloat ar, RIfloat ag, RIfloat ab, const Color& d, VGBlendMode blendMode) const; |
|
129 void colorTransform(Color& c) const; |
|
130 |
|
131 PixelPipe(const PixelPipe&); //!< Not allowed. |
|
132 const PixelPipe& operator=(const PixelPipe&); //!< Not allowed. |
|
133 |
|
134 Drawable* m_drawable; |
|
135 bool m_masking; |
|
136 Image* m_image; |
|
137 const Paint* m_paint; |
|
138 Paint m_defaultPaint; |
|
139 VGBlendMode m_blendMode; |
|
140 VGImageMode m_imageMode; |
|
141 VGImageQuality m_imageQuality; |
|
142 Color m_tileFillColor; |
|
143 bool m_colorTransform; |
|
144 RIfloat m_colorTransformValues[8]; |
|
145 Matrix3x3 m_surfaceToPaintMatrix; |
|
146 Matrix3x3 m_surfaceToImageMatrix; |
|
147 }; |
|
148 |
|
149 //======================================================================= |
|
150 |
|
151 } //namespace OpenVGRI |
|
152 |
|
153 //======================================================================= |
|
154 |
|
155 #endif /* __RIPIXELPIPE_H */ |