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Diffstat (limited to 'src/vg/PixelPipe.h')
| -rw-r--r-- | src/vg/PixelPipe.h | 150 |
1 files changed, 150 insertions, 0 deletions
diff --git a/src/vg/PixelPipe.h b/src/vg/PixelPipe.h new file mode 100644 index 0000000..2a2278c --- /dev/null +++ b/src/vg/PixelPipe.h @@ -0,0 +1,150 @@ +#ifndef __PIXELPIPE_H
+#define __PIXELPIPE_H
+
+/*------------------------------------------------------------------------
+ *
+ * OpenVG 1.1 Reference Implementation
+ * -----------------------------------
+ *
+ * Copyright (c) 2007 The Khronos Group Inc.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and /or associated documentation files
+ * (the "Materials "), to deal in the Materials without restriction,
+ * including without limitation the rights to use, copy, modify, merge,
+ * publish, distribute, sublicense, and/or sell copies of the Materials,
+ * and to permit persons to whom the Materials are furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Materials.
+ *
+ * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE MATERIALS OR
+ * THE USE OR OTHER DEALINGS IN THE MATERIALS.
+ *
+ *//**
+ * \file
+ * \brief Paint and PixelPipe classes.
+ * \note
+ *//*-------------------------------------------------------------------*/
+
+#include "Math.h"
+#include "Image.h"
+
+//=======================================================================
+
+namespace tgOpenVG
+{
+
+/*-------------------------------------------------------------------*//*!
+* \brief Storage and operations for VGPaint.
+* \param
+* \return
+* \note
+*//*-------------------------------------------------------------------*/
+
+class Paint
+{
+public:
+ Paint();
+ ~Paint();
+ void addReference() { m_referenceCount++; }
+ int removeReference() { m_referenceCount--; RI_ASSERT(m_referenceCount >= 0); return m_referenceCount; }
+
+ struct GradientStop
+ {
+ GradientStop() : offset(0.0f), color(0.0f, 0.0f, 0.0f, 0.0f, Color::sRGBA) {}
+ RIfloat offset;
+ Color color;
+ };
+
+ VGPaintType m_paintType;
+ Color m_paintColor;
+ Color m_inputPaintColor;
+ VGColorRampSpreadMode m_colorRampSpreadMode;
+ Array<GradientStop> m_colorRampStops;
+ Array<GradientStop> m_inputColorRampStops;
+ VGboolean m_colorRampPremultiplied;
+ Vector2 m_inputLinearGradientPoint0;
+ Vector2 m_inputLinearGradientPoint1;
+ Vector2 m_inputRadialGradientCenter;
+ Vector2 m_inputRadialGradientFocalPoint;
+ RIfloat m_inputRadialGradientRadius;
+ Vector2 m_linearGradientPoint0;
+ Vector2 m_linearGradientPoint1;
+ Vector2 m_radialGradientCenter;
+ Vector2 m_radialGradientFocalPoint;
+ RIfloat m_radialGradientRadius;
+ VGTilingMode m_patternTilingMode;
+ Image* m_pattern;
+private:
+ Paint(const Paint&); //!< Not allowed.
+ const Paint& operator=(const Paint&); //!< Not allowed.
+
+ int m_referenceCount;
+};
+
+/*-------------------------------------------------------------------*//*!
+* \brief Encapsulates all information needed for painting a pixel.
+* \param
+* \return
+* \note
+*//*-------------------------------------------------------------------*/
+
+class PixelPipe
+{
+public:
+ PixelPipe(); //throws bad_alloc
+ ~PixelPipe();
+
+ void pixelPipe(int x, int y, RIfloat coverage, unsigned int sampleMask) const; //rasterizer calls this function for each pixel
+
+ void setDrawable(Drawable* drawable);
+ void setBlendMode(VGBlendMode blendMode);
+ void setMask(bool masking);
+ void setImage(Image* image, VGImageMode imageMode); //image = NULL disables drawImage functionality
+ void setSurfaceToPaintMatrix(const Matrix3x3& surfaceToPaintMatrix);
+ void setSurfaceToImageMatrix(const Matrix3x3& surfaceToImageMatrix);
+ void setImageQuality(VGImageQuality imageQuality);
+ void setTileFillColor(const Color& c);
+ void setPaint(const Paint* paint);
+ void setColorTransform(bool enable, RIfloat values[8]);
+
+private:
+ void linearGradient(RIfloat& g, RIfloat& rho, RIfloat x, RIfloat y) const;
+ void radialGradient(RIfloat& g, RIfloat& rho, RIfloat x, RIfloat y) const;
+ Color integrateColorRamp(RIfloat gmin, RIfloat gmax) const;
+ Color colorRamp(RIfloat gradient, RIfloat rho) const;
+ Color blend(const Color& s, RIfloat ar, RIfloat ag, RIfloat ab, const Color& d, VGBlendMode blendMode) const;
+ void colorTransform(Color& c) const;
+
+ PixelPipe(const PixelPipe&); //!< Not allowed.
+ const PixelPipe& operator=(const PixelPipe&); //!< Not allowed.
+
+ Drawable* m_drawable;
+ bool m_masking;
+ Image* m_image;
+ const Paint* m_paint;
+ Paint m_defaultPaint;
+ VGBlendMode m_blendMode;
+ VGImageMode m_imageMode;
+ VGImageQuality m_imageQuality;
+ Color m_tileFillColor;
+ bool m_colorTransform;
+ RIfloat m_colorTransformValues[8];
+ Matrix3x3 m_surfaceToPaintMatrix;
+ Matrix3x3 m_surfaceToImageMatrix;
+};
+
+//=======================================================================
+
+} //namespace OpenVGRI
+
+//=======================================================================
+
+#endif /* __PIXELPIPE_H */
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