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Added support for onionskin with multiple frames.

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This commit is contained in:
David Capello 2010-07-16 18:20:02 -03:00
parent 313b915e63
commit ba1c80831b
1 changed files with 19 additions and 8 deletions
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27
src/util/render.cpp
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@ -448,26 +448,37 @@ Image* RenderEngine::renderSprite(Sprite* sprite,
image_clear(image, 0);
// Onion-skin feature: draw the previous frame
if (UIContext::instance()->getSettings()->getUseOnionskin() && (frame > 0)) {
ISettings* settings = UIContext::instance()->getSettings();
if (settings->getUseOnionskin()) {
// Draw background layer of the current frame with opacity=255
global_opacity = 255;
renderLayer(sprite, sprite->getFolder(), image, source_x, source_y,
frame, zoom, zoomed_func, true, false);
// Draw transparent layers of the previous frame with opacity=128
global_opacity = 128;
// Draw transparent layers of the previous/next frames with different opacity (<255) (it is the onion-skinning)
{
int prevs = settings->getOnionskinPrevFrames();
int nexts = settings->getOnionskinNextFrames();
renderLayer(sprite, sprite->getFolder(), image, source_x, source_y,
frame-1, zoom, zoomed_func, false, true);
for (int f=frame-prevs; f <= frame+nexts; ++f) {
if (f == frame)
continue;
else if (f < frame)
global_opacity = 64 + 128 - 128 * (frame - f) / prevs;
else
global_opacity = 64 + 128 - 128 * (f - frame) / nexts;
renderLayer(sprite, sprite->getFolder(), image, source_x, source_y,
f, zoom, zoomed_func, false, true);
}
}
// Draw transparent layers of the current frame with opacity=255
global_opacity = 255;
renderLayer(sprite, sprite->getFolder(), image, source_x, source_y,
frame, zoom, zoomed_func, false, true);
}
// Just draw the current frame
// Onion-skin is disabled: just draw the current frame
else {
renderLayer(sprite, sprite->getFolder(), image, source_x, source_y,
frame, zoom, zoomed_func, true, true);