//----------------------------------------
void ofxViewportCam::begin(ofRectangle viewport)
{
ofPushStyle();
if(drawWireFrame)
{
ofNoFill();
}
else
{
ofFill();
}
ofVec3f pos = getPosition();
ofVec2f mousePosScreen = ofVec3f(ofGetMouseX() - viewport.width / 2 - viewport.x, viewport.height / 2 - (ofGetMouseY() - viewport.y), 0);
#ifdef TARGET_LINUX
if(ofGetKeyPressed(OF_KEY_SHIFT))
#else
if(ofGetKeyPressed(OF_KEY_ALT))
#endif
{
ofVec2f trans(mousePosScreenPrev - mousePosScreen);
if(ofGetMousePressed(0))
{
tumble(trans.x, -trans.y);
}
else if(ofGetMousePressed(1))
{
track(trans.x, trans.y);
}
else if(ofGetMousePressed(2))
{
float zoomAmount = trans.y;
zoom(zoomAmount);
}
}
mousePosScreenPrev = mousePosScreen;
ofCamera::begin(viewport);
ofPopStyle();
}
void Camera::mouseDragged(ofMouseEventArgs& event)
{
if(event.button == 0)
{
tumble(prevMouseX, prevMouseY, event.x, event.y);
}
else if(event.button == 1)
{
track(prevMouseX, prevMouseY, event.x, event.y);
}
else if(event.button == 2)
{
dolly(prevMouseX, prevMouseY, event.x, event.y);
setClippingPlane();
}
prevMouseX = event.x;
prevMouseY = event.y;
mouseClicked = false;;
}