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Diffstat (limited to 'intern/img/extern/IMG_Pixmap.h')
| -rw-r--r-- | intern/img/extern/IMG_Pixmap.h | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/intern/img/extern/IMG_Pixmap.h b/intern/img/extern/IMG_Pixmap.h new file mode 100644 index 00000000000..9d9f247e3b4 --- /dev/null +++ b/intern/img/extern/IMG_Pixmap.h @@ -0,0 +1,198 @@ +/** + * $Id$ + * ***** BEGIN GPL/BL DUAL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. The Blender + * Foundation also sells licenses for use in proprietary software under + * the Blender License. See http://www.blender.org/BL/ for information + * about this. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL/BL DUAL LICENSE BLOCK ***** + */ + +/** + + * $Id$ + * Copyright (C) 2001 NaN Technologies B.V. + * Abstract base class for pixmaps of different types. + * @author Maarten Gribnau + * @date March 6, 2001 + */ + +#ifndef _H_IMG_Pixmap +#define _H_IMG_Pixmap + +#include "GEN_Types.h" +#include "GEN_Rect.h" + + +class IMG_Pixmap +{ +public: + /** The type of pixels that are stored in this pixmap. */ + typedef enum { + kPixelTypeUnknown = 0, /**< R:8, G:8, B:8, Ignore:8 */ +// kPixelTypeRGB32 = 1, /**< R:8, G:8, B:8, Ignore:8 */ + kPixelTypeRGBA32 = 2, /**< R:8, G:8, B:8, Alpha:8 */ +// kPixelTypeRGB16 = 3, /**< Ignore:1, R:5, G:5, B:5 */ +// kPixelTypeRGBA16 = 4, /**< Alpha:1, R:5, G:5, B:5 */ +// kPixelTypeRGB16_565 = 5, /**< R:5, G:6, B:5 */ +// kPixelTypeRGB24 = 6 /**< R:8, G:8, B:8 */ + } TPixelType; + + /** + * Default constructor. + */ + IMG_Pixmap(); + + /** + * Constructs a pixmap with the requested width and height. + * @param width The width of the pixmap created. + * @param height The height of the pixmap created. + */ + IMG_Pixmap(GEN_TUns32 width, GEN_TUns32 height); + + /** + * Destructor. + */ + virtual ~IMG_Pixmap(); + + /** + * Access to image data + * @return pointer to the image data + */ + virtual void* getDataPtr() const = 0; + + /** + * Access to image width. + * @return width of the image + */ + inline GEN_TUns32 getWidth() const; + + /** + * Access to image height. + * @return height of the image + */ + inline GEN_TUns32 getHeight() const; + + /** + * Returns the bounds of the pixmap in a rectangle. + * @param bounds of the image + */ + inline void getBounds(GEN_Rect& r) const; + + /** + * Access to pixel type. + * @return the pixel type + */ + inline TPixelType getPixelType() const; + + /** + * Clamps coordinates inside (0, 0) and (width, height). + * @param x requested x-coordinate + * @param y requested y-coordinate + */ + inline void clamp(GEN_TInt32& x, GEN_TInt32& y) const; + + /** + * Clamps u, v coordinates between 0 and 1. + * @param u requested u-coordinate + * @param v requested v-coordinate + */ + inline void clamp(float& u, float& v) const; + + /** + * Converts (u,v) coordinates to pixel addresses. + * Assumes that (u,v) coordinates are in the [0,1] range. + * @param u requested u-coordinate in the image + * @param v requested v-coordinate in the image + * @param x calculated x-coordinate in the image + * @param y calculated y-coordinate in the image + */ + inline void getPixelAddress(float u, float v, GEN_TInt32& x, GEN_TInt32& y) const; + + /** + * Fills the rectangle given with the color given. + * Performs a bounds check. + * @param r requested bounds rectangle in the image + * @param c color to use + */ + //virtual void fillRect(const GEN_Rect& r, const IMG_ColorRGBA& c) = 0; + +protected: + /** Width of the image in pixels */ + GEN_TUns32 m_width; + /** Height of the image in pixels */ + GEN_TUns32 m_height; + /** Number of bytes for one row in the image. */ + GEN_TUns32 m_rowBytes; + /** Size in bits for one pixel */ + GEN_TUns32 m_pixelSize; + /** Type of pixels in this image. */ + TPixelType m_pixelType; +// TEndian m_bitOrder; +// TEndian m_byteOrder; +}; + +inline GEN_TUns32 IMG_Pixmap::getWidth() const +{ + return m_width; +} + +inline GEN_TUns32 IMG_Pixmap::getHeight() const +{ + return m_height; +} + +inline void IMG_Pixmap::getBounds(GEN_Rect& r) const +{ + r.set(0, 0, m_width, m_height); +} + +inline IMG_Pixmap::TPixelType IMG_Pixmap::getPixelType() const +{ + return m_pixelType; +} + +inline void IMG_Pixmap::clamp(GEN_TInt32& x, GEN_TInt32& y) const +{ + if (x < 0) x = 0; + if (x > (GEN_TInt32)m_width) x = (GEN_TInt32)m_width; + if (y < 0) y = 0; + if (y > (GEN_TInt32)m_height) y = (GEN_TInt32)m_height; +} + +inline void IMG_Pixmap::clamp(float& u, float& v) const +{ + if (u < 0.f) u = 0.f; + if (u > 1.f) u = 1.f; + if (v < 0.f) v = 0.f; + if (v > 1.f) v = 1.f; +} + +inline void IMG_Pixmap::getPixelAddress(float u, float v, GEN_TInt32& x, GEN_TInt32& y) const +{ + x = (GEN_TInt32)(((float)m_width) * u); + y = (GEN_TInt32)(((float)m_height) * v); +} + +#endif // _H_IMG_Pixmap
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