263 lines
7.3 KiB
C++
263 lines
7.3 KiB
C++
/**
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* $Id$
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* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version. The Blender
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* Foundation also sells licenses for use in proprietary software under
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* the Blender License. See http://www.blender.org/BL/ for information
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* about this.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL/BL DUAL LICENSE BLOCK *****
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*/
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#include "IMG_PixmapRGBA32.h"
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IMG_PixmapRGBA32::IMG_PixmapRGBA32(TUns32 width, TUns32 height)
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: IMG_Pixmap(), m_mem(width * height)
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{
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m_image = m_mem;
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m_width = width;
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m_height = height;
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m_rowBytes = width * sizeof(TPixelRGBA32);
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m_pixelSize = 8 * sizeof(TPixelRGBA32);
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m_pixelType = kPixelTypeRGBA32;
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}
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IMG_PixmapRGBA32::IMG_PixmapRGBA32(void* image, TUns32 width, TUns32 height, TUns32 rowBytes)
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: IMG_Pixmap(), m_mem(image, width * rowBytes)
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{
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m_image = m_mem;
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m_width = width;
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m_height = height;
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m_rowBytes = rowBytes;
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m_pixelSize = 8 * sizeof(TPixelRGBA32);
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m_pixelType = kPixelTypeRGBA32;
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}
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void IMG_PixmapRGBA32::fillRect(const IMG_Rect& r, const IMG_ColorRGB& c)
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{
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IMG_Rect t_bnds (0, 0, m_width, m_height); // Bounds of this pixmap
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IMG_Rect r_bnds (r); // Area to set
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// Determine visibility
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TVisibility v = t_bnds.getVisibility(r_bnds);
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if (v == kNotVisible) return;
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if (v == kPartiallyVisible) {
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// Clip the destination rectangle to the bounds of this pixmap
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t_bnds.clip(r_bnds);
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if (r_bnds.isEmpty()) {
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return;
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}
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}
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#if 0
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// Set new pixels using shifting
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// Prepare the pixel value to set
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IMG_ColorRGBA ca (c);
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TPixelRGBA32 pv = getPixelValue(c);
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// Mask off the alpha bits
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pv &= 0x00FFFFFF; //0xFFFFFF00;
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// Set the pixels in the destination rectangle
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for (TInt32 y = r.m_t; y < r.m_b; y++) {
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// Park pixel pointer at the start pixels
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TPixelPtr desPtr = getPixelPtr(r_bnds.m_l, y);
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for (TInt32 x = r.m_l; x < r.m_r; x++) {
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// Set the new pixel value (retain current alpha)
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*(desPtr++) = pv | ((*desPtr) & 0xFF000000); //0x000000FF);
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}
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}
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#else
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// Set new values using byte indexing
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//IMG_ColorRGBA ca (c);
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TPixelRGBA32 src = getPixelValue(c);
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TPixelPtr desPtr;
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TUns8* srcBytes = (TUns8*) &src;
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// Set the pixels in the destination rectangle
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for (TInt32 y = r.m_t; y < r.m_b; y++) {
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// Park pixel pointer at the start pixels
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desPtr = getPixelPtr(r_bnds.m_l, y);
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for (TInt32 x = r.m_l; x < r.m_r; x++) {
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// Set the new pixel value (retain current alpha)
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((TUns8*)desPtr)[bi_r] = srcBytes[bi_r];
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((TUns8*)desPtr)[bi_g] = srcBytes[bi_g];
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((TUns8*)desPtr)[bi_b] = srcBytes[bi_b];
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desPtr++;
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}
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}
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#endif
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}
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void IMG_PixmapRGBA32::fillRect(const IMG_Rect& r, const IMG_ColorRGBA& c)
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{
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IMG_Rect t_bnds (0, 0, m_width, m_height); // Bounds of this pixmap
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IMG_Rect r_bnds (r); // Area to set
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// Determine visibility
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TVisibility v = t_bnds.getVisibility(r_bnds);
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if (v == kNotVisible) return;
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if (v == kPartiallyVisible) {
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// Clip the destination rectangle to the bounds of this pixmap
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t_bnds.clip(r_bnds);
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if (r_bnds.isEmpty()) {
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return;
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}
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}
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// Set the pixels in the destination rectangle
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TPixelRGBA32 pixel = getPixelValue(c);
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for (TInt32 y = r.m_t; y < r.m_b; y++) {
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// Park pixel pointer at the start pixels
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TPixelPtr desPtr = getPixelPtr(r_bnds.m_l, y);
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for (TInt32 x = r.m_l; x < r.m_r; x++) {
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*(desPtr++) = pixel;
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}
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}
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}
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void IMG_PixmapRGBA32::setPixmap(TUns32 x, TUns32 y, const IMG_PixmapRGBA32& pixmap, const IMG_Rect& bnds)
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{
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IMG_Rect i_bnds (bnds); // Bounds of input pixmap
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IMG_Rect t_bnds (0, 0, m_width, m_height); // Bounds of this pixmap
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IMG_Rect p_bnds (bnds); // Bounds of the paste area
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p_bnds.setCenter(x, y);
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// The next check could be removed if the caller is made responsible for handing us non-empty rectangles
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if (i_bnds.isEmpty()) {
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// Nothing to do
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return;
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}
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// Determine visibility of the paste area
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TVisibility v = t_bnds.getVisibility(p_bnds);
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if (v == kNotVisible) return;
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if (v == kPartiallyVisible) {
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// Clipping is needed
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if (p_bnds.m_l < 0) {
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i_bnds.m_l += p_bnds.m_l;
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p_bnds.m_l = 0;
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}
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if (p_bnds.m_t < 0) {
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i_bnds.m_t += p_bnds.m_t;
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p_bnds.m_t = 0;
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}
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TInt32 d = p_bnds.getWidth();
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if (p_bnds.m_r > d) {
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i_bnds.m_t -= d - p_bnds.m_r;
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p_bnds.m_t = d;
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}
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d = p_bnds.getHeight();
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if (p_bnds.m_b > d) {
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i_bnds.m_b -= d - p_bnds.m_b;
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p_bnds.m_b = d;
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}
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}
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// Iterate through the rows
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for (TInt32 r = 0; r < p_bnds.getHeight(); r++) {
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// Park pixel pointers at the start pixels
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TPixelPtr srcPtr = getPixelPtr(i_bnds.m_l, i_bnds.m_t + r);
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TPixelPtr desPtr = getPixelPtr(p_bnds.m_l, p_bnds.m_t + r);
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// Iterate through the columns
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for (int c = 0; c < p_bnds.getWidth(); c++) {
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*(desPtr++) = *(srcPtr++);
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}
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}
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}
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void IMG_PixmapRGBA32::blendPixmap(TUns32 x, TUns32 y, const IMG_PixmapRGBA32& pixmap, const IMG_Rect& bnds)
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{
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IMG_Rect i_bnds (bnds); // Bounds of input pixmap
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IMG_Rect t_bnds (0, 0, m_width, m_height); // Bounds of this pixmap
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IMG_Rect p_bnds (bnds); // Bounds of the paste area
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p_bnds.setCenter(x, y);
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// The next check could be removed if the caller is made responsible for handing us non-empty rectangles
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if (i_bnds.isEmpty()) {
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// Nothing to do
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return;
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}
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// Determine visibility of the paste area
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TVisibility v = t_bnds.getVisibility(p_bnds);
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if (v == kNotVisible) return;
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if (v == kPartiallyVisible) {
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// Clipping is needed
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if (p_bnds.m_l < 0) {
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i_bnds.m_l += -p_bnds.m_l;
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p_bnds.m_l = 0;
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}
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if (p_bnds.m_t < 0) {
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i_bnds.m_t += -p_bnds.m_t;
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p_bnds.m_t = 0;
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}
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TInt32 d = t_bnds.getWidth();
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if (p_bnds.m_r > d) {
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i_bnds.m_r -= p_bnds.m_r - d;
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p_bnds.m_r = d;
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}
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d = t_bnds.getHeight();
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if (p_bnds.m_b > d) {
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i_bnds.m_b -= p_bnds.m_b - d;
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p_bnds.m_b = d;
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}
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}
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IMG_ColorRGBA srcColor;
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IMG_ColorRGBA desColor;
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// Iterate through the rows
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for (int r = 0; r < p_bnds.getHeight(); r++) {
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// Park pixel pointers at the start pixels
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TPixelPtr srcPtr = pixmap.getPixelPtr(i_bnds.m_l, i_bnds.m_t + r);
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TPixelPtr desPtr = getPixelPtr(p_bnds.m_l, p_bnds.m_t + r);
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// Iterate through the columns
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for (int c = 0; c < p_bnds.getWidth(); c++) {
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// Retrieve colors from source and destination pixmaps
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getColor(*srcPtr, srcColor);
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getColor(*desPtr, desColor);
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// Blend the colors
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desColor.blendColor(srcColor);
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// Write color back to destination pixmap
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*desPtr = getPixelValue(desColor);
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srcPtr++;
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desPtr++;
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}
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}
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}
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void IMG_PixmapRGBA32::blendPixmap(float u, float v, const IMG_PixmapRGBA32& pixmap)
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{
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TUns32 x, y;
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getPixelAddress(u, v, x, y);
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blendPixmap(x, y, pixmap);
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}
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