///////////////////////////////////////////////////////////
//
// Set the active zoom factor
//
///////////////////////////////////////////////////////////
void view::setZoomFactor(double zoomFactor, imbxInt32 centerPointX /* =-1 */, imbxInt32 centerPointY /* =-1 */)
{
// Update the zoom factor
///////////////////////////////////////////////////////////
m_zoom = zoomFactor;
// If the image hasn't been set, then don't do anything
///////////////////////////////////////////////////////////
if(m_originalImage == 0)
{
return;
}
// Not automatic zoom
///////////////////////////////////////////////////////////
if(m_zoom > 0)
{
updateImageRect(centerPointX, centerPointY);
return;
}
// Automatic zoom
///////////////////////////////////////////////////////////
setScrollSize(1, 1, true);
imbxUint32 imageSizeX, imageSizeY;
m_originalImage->getSize(&imageSizeX, &imageSizeY);
setZoomRect(0, 0, imageSizeX, imageSizeY);
}
///////////////////////////////////////////////////////////
//
// Zoom to the selected image's area. The rectangle measure
// units are in image's pixels
//
///////////////////////////////////////////////////////////
void view::setZoomRect(imbxInt32 left, imbxInt32 top, imbxInt32 right, imbxInt32 bottom)
{
if(m_originalImage == 0)
{
return;
}
if(left > right)
{
imbxInt32 temp = left;
left = right;
right = temp;
}
if(top > bottom)
{
imbxInt32 temp = top;
top = bottom;
bottom = temp;
}
imbxInt32 centerPointX = (right - left)/2 + left;
imbxInt32 centerPointY = (bottom - top)/2 + top;
imbxUint32 sizeX, sizeY;
getWindowSize(&sizeX, &sizeY);
double imageSizeMmX, imageSizeMmY;
m_originalImage->getSizeMm(&imageSizeMmX, &imageSizeMmY);
imbxUint32 imageSizeX, imageSizeY;
m_originalImage->getSize(&imageSizeX, &imageSizeY);
imbxUint32 horzDPI, vertDPI;
getScreenDPI(&horzDPI, &vertDPI);
if(imageSizeMmX == 0)
{
imageSizeMmX = (double)imageSizeX * 25.4 / (double)horzDPI;
}
if(imageSizeMmY == 0)
{
imageSizeMmY = (double)imageSizeY * 25.4 / (double)vertDPI;
}
double displaySizeMmX = imageSizeMmX * ((double)(right - left) / (double)imageSizeX);
double displaySizeMmY = imageSizeMmY * ((double)(bottom - top) / (double)imageSizeY);
double horzZoom = 0.95*(sizeX*25.4)/(displaySizeMmX*(double)horzDPI);
double vertZoom = 0.95*(sizeY*25.4)/(displaySizeMmY*(double)vertDPI);
m_zoom = (horzZoom < vertZoom) ? horzZoom : vertZoom;
updateImageRect(centerPointX, centerPointY);
}
///////////////////////////////////////////////////////////
//
// Zoom in/out. The selected pixel will be centered into the
// window
//
///////////////////////////////////////////////////////////
void view::zoomInOut(bool bZoomIn, imbxInt32 centerPointX /* =-1 */, imbxInt32 centerPointY /* =-1 */)
{
if(bZoomIn)
{
m_zoom *= 2;
}
else
{
m_zoom /= 2;
}
updateImageRect(centerPointX, centerPointY);
}
//--------------------------------------------------------------
void ofApp::setup(){
//sound image is the large image, image rect acts as it's bounding box which helps it maintain aspect ratio and middle of screen orientation
soundImage.load("Volume.jpg");
key.load("key.jpg");
imageRect.setSize(soundImage.getWidth(), soundImage.getHeight());
//loading font for information display
stampFont.load("stamped.ttf",7);
updateImageRect();
generateStates();
}
//--------------------------------------------------------------
void ofApp::windowResized(int w, int h){
updateImageRect();
}
