void THISSequence::recomputePreview()
{
if(!loaded || !widthSet) {
return;
}
framesToShow = (drawWidth / widthPerFrame);
if(framesToShow == 0) {
return;
}
int startIndex = getIndexAtPercent(drawRange.min);
int endIndex = getIndexAtPercent(drawRange.max);
int framesInRange = (endIndex - startIndex);
heightPerFrame = (widthPerFrame/imageWidth) * imageHeight;
int frameStep = framesInRange / framesToShow;
int fameIndex = 0;
clearPreviewTextures();
for(int i = 0; i < framesToShow; i ++) {
ofImage* thumbnail = frames[startIndex+frameStep*i]->getThumbnail();
PreviewTexture p;
p.frameIndex = startIndex+frameStep*i;
p.texture = new ofTexture();
p.texture->allocate(thumbnail->getWidth(), thumbnail->getHeight(), glTypeForImageType(imageType));
p.texture->loadData(thumbnail->getPixels(), thumbnail->getWidth(), thumbnail->getHeight(), glTypeForImageType(imageType));
p.bounds = ofRectangle(widthPerFrame*i, 0, widthPerFrame, heightPerFrame);
previewTextures.push_back( p );
}
}
void ofxTLImageSequence::recomputePreview(){
if(!loaded){
ofLogError("ofxTLImageSequence -- hasn't been loaded");
return;
}
if(bounds.height < 20){
ofLogError("ofxTLImageSequence -- too squished at height " + ofToString(20));
return;
}
float widthPerFrame = bounds.height/imageHeight * imageWidth;
int framesToShow = (bounds.width / widthPerFrame) + 1;
if(framesToShow == 0){
ofLogError("ofxTLImageSequence -- no frames to show!");
return;
}
int startIndex = getIndexAtPercent(zoomBounds.min);
int endIndex = getIndexAtPercent(zoomBounds.max);
int framesInRange = (endIndex - startIndex);
int frameStep = framesInRange / framesToShow;
int fameIndex = 0;
// cout << " start index is " << startIndexDec << " end index " << endIndexDec << " frames in range " << framesInRange << " framestep " << frameStep << " frames to show " << framesToShow << endl;
clearPreviewTextures();
for(int i = 0; i < framesToShow; i++){
ofImage* thumbnail = frames[startIndex+frameStep*i]->getThumbnail();
PreviewTexture p;
p.frameIndex = startIndex+frameStep*i;
p.texture = new ofTexture();
p.texture->allocate(thumbnail->getWidth(), thumbnail->getHeight(), ofGetGlInternalFormat(thumbnail->getPixelsRef()));
p.texture->loadData(thumbnail->getPixels(), thumbnail->getWidth(), thumbnail->getHeight(), ofGetGlInternalFormat(thumbnail->getPixelsRef()));
p.bounds = ofRectangle(widthPerFrame*i, 0, widthPerFrame, bounds.height);
// cout << " preview texture for frame " << startIndex+framesInRange*i << endl;
previewTextures.push_back( p );
}
}
ofImage* THISSequence::getFrame(float percent, bool thumb)
{
return getFrame(getIndexAtPercent(percent), thumb);
}
