mirror of https://github.com/aseprite/aseprite.git
120 lines
3.7 KiB
C++
120 lines
3.7 KiB
C++
/* Aseprite
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* Copyright (C) 2001-2013 David Capello
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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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
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "raster/algorithm/flip_image.h"
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#include "base/unique_ptr.h"
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#include "gfx/rect.h"
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#include "raster/image.h"
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#include "raster/mask.h"
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#include "raster/primitives.h"
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#include <vector>
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namespace raster {
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namespace algorithm {
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void flip_image(Image* image, const gfx::Rect& bounds, FlipType flipType)
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{
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switch (flipType) {
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case FlipHorizontal:
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for (int y=bounds.y; y<bounds.y+bounds.h; ++y) {
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int u = bounds.x+bounds.w-1;
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for (int x=bounds.x; x<bounds.x+bounds.w/2; ++x, --u) {
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uint32_t c1 = get_pixel(image, x, y);
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uint32_t c2 = get_pixel(image, u, y);
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put_pixel(image, x, y, c2);
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put_pixel(image, u, y, c1);
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}
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}
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break;
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case FlipVertical: {
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int section_size = image->getRowStrideSize(bounds.w);
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std::vector<uint8_t> tmpline(section_size);
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int v = bounds.y+bounds.h-1;
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for (int y=bounds.y; y<bounds.y+bounds.h/2; ++y, --v) {
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uint8_t* address1 = image->getPixelAddress(bounds.x, y);
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uint8_t* address2 = image->getPixelAddress(bounds.x, v);
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// Swap lines.
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std::copy(address1, address1+section_size, tmpline.begin());
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std::copy(address2, address2+section_size, address1);
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std::copy(tmpline.begin(), tmpline.end(), address2);
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}
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break;
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}
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}
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}
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void flip_image_with_mask(Image* image, const Mask* mask, FlipType flipType, int bgcolor)
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{
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gfx::Rect bounds = mask->getBounds();
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switch (flipType) {
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case FlipHorizontal: {
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base::UniquePtr<Image> originalRow(Image::create(image->getPixelFormat(), mask->getBounds().w, 1));
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for (int y=bounds.y; y<bounds.y+bounds.h; ++y) {
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// Copy the current row.
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copy_image(originalRow, image, -bounds.x, -y);
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int u = bounds.x+bounds.w-1;
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for (int x=bounds.x; x<bounds.x+bounds.w; ++x, --u) {
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if (mask->containsPoint(x, y)) {
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put_pixel(image, u, y, get_pixel(originalRow, x-bounds.x, 0));
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if (!mask->containsPoint(u, y))
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put_pixel(image, x, y, bgcolor);
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}
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}
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}
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break;
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}
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case FlipVertical:{
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base::UniquePtr<Image> originalCol(Image::create(image->getPixelFormat(), 1, mask->getBounds().h));
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for (int x=bounds.x; x<bounds.x+bounds.w; ++x) {
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// Copy the current column.
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copy_image(originalCol, image, -x, -bounds.y);
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int v = bounds.y+bounds.h-1;
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for (int y=bounds.y; y<bounds.y+bounds.h; ++y, --v) {
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if (mask->containsPoint(x, y)) {
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put_pixel(image, x, v, get_pixel(originalCol, 0, y-bounds.y));
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if (!mask->containsPoint(x, v))
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put_pixel(image, x, y, bgcolor);
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}
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}
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}
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break;
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}
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}
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}
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} // namespace algorithm
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} // namespace raster
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