void RGLView::adjustZoomUpdate(int mouseX, int mouseY)
{
Viewpoint* viewpoint = scene->getViewpoint();
int dy = mouseY - zoomBaseY;
float zoom = clamp ( viewpoint->getZoom() * exp(-dy*ZOOM_PIXELLOGSTEP), ZOOM_MIN, ZOOM_MAX);
viewpoint->setZoom(zoom);
View::update();
zoomBaseY = mouseY;
}
void rgl_getZoom(int* successptr, double* zoom)
{
int success = RGL_FAIL;
Device* device;
if (deviceManager && (device = deviceManager->getAnyDevice())) {
RGLView* rglview = device->getRGLView();
Scene* scene = rglview->getScene();
Viewpoint* viewpoint = scene->getViewpoint();
*zoom = viewpoint->getZoom();
success = RGL_SUCCESS;
}
*successptr = success;
}
void rgl_getZoom(int* successptr, double* zoom)
{
int success = RGL_FAIL;
Device* device = deviceManager->getAnyDevice();
if ( device ) {
RGLView* rglview = device->getRGLView();
Scene* scene = rglview->getScene();
Viewpoint* viewpoint = scene->getViewpoint();
*zoom = viewpoint->getZoom();
*zoom = 1.0f+(*zoom)* ((float)(VIEWPOINT_MAX_ZOOM-1)) ;
success = RGL_SUCCESS;
}
*successptr = success;
}
void RGLView::wheelRotate(int dir)
{
Viewpoint* viewpoint = scene->getViewpoint();
float zoom = viewpoint->getZoom();
#define ZOOM_STEP 1.05f
#define ZOOM_PIXELLOGSTEP 0.02f
switch(dir)
{
case GUI_WheelForward:
zoom *= ZOOM_STEP;
break;
case GUI_WheelBackward:
zoom /= ZOOM_STEP;
break;
}
zoom = clamp( zoom , ZOOM_MIN, ZOOM_MAX);
viewpoint->setZoom(zoom);
View::update();
}
