diff options
Diffstat (limited to 'source/blender/img/intern/IMG_CanvasRGBA32.cpp')
| -rw-r--r-- | source/blender/img/intern/IMG_CanvasRGBA32.cpp | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/source/blender/img/intern/IMG_CanvasRGBA32.cpp b/source/blender/img/intern/IMG_CanvasRGBA32.cpp new file mode 100644 index 00000000000..5358265337d --- /dev/null +++ b/source/blender/img/intern/IMG_CanvasRGBA32.cpp @@ -0,0 +1,82 @@ +/** + * $Id$ + * ***** 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 ***** + */ + +#include "IMG_CanvasRGBA32.h" + + + +IMG_CanvasRGBA32::IMG_CanvasRGBA32(TUns32 width, TUns32 height) + : IMG_PixmapRGBA32(width, height) +{ +} + +IMG_CanvasRGBA32::IMG_CanvasRGBA32(void* image, TUns32 width, TUns32 height, TUns32 rowBytes) + : IMG_PixmapRGBA32(image, width, height, rowBytes) +{ +} + + +void IMG_CanvasRGBA32::blendPixmap( + TUns32 xStart, TUns32 yStart, TUns32 xEnd, TUns32 yEnd, + const IMG_PixmapRGBA32& pixmap) +{ + // Determine visibility of the line + IMG_Line l (xStart, yStart, xEnd, yEnd); // Line used for blending + IMG_Rect bnds (0, 0, m_width, m_height); // Bounds of this pixmap + TVisibility v = bnds.getVisibility(l); + if (v == kNotVisible) return; + if (v == kPartiallyVisible) { + bnds.clip(l); + } + + float numSteps = (((float)l.getLength()) / ((float)pixmap.getWidth() / 4)); + //numSteps *= 4; + numSteps = numSteps ? numSteps : 1; + float step = 0.f, stepSize = 1.f / ((float)numSteps); + TInt32 x, y; + for (TUns32 s = 0; s < numSteps; s++) { + l.getPoint(step, x, y); + IMG_PixmapRGBA32::blendPixmap((TUns32)x, (TUns32)y, pixmap); + step += stepSize; + } +} + + +void IMG_CanvasRGBA32::blendPixmap( + float uStart, float vStart, float uEnd, float vEnd, + const IMG_PixmapRGBA32& pixmap) +{ + TUns32 xStart, yStart, xEnd, yEnd; + getPixelAddress(uStart, vStart, xStart, yStart); + getPixelAddress(uEnd, vEnd, xEnd, yEnd); + blendPixmap(xStart, yStart, xEnd, yEnd, pixmap); +} + |