bool ObjectRenderer::moveDrag(int x, int y)
{
if(!simObject)
return false;
if(!dragging)
return false;
if(dragSelection == NO_SELECTION) // Camera Control
{
if(visParams.cameraMode == VisualizationParameterSet::TARGETCAM)
{
if(dragType == DRAG_ROTATE)
{
// get the translation vector
Vector3d viewingvec;
viewingvec.v[0] = (x - dragCurrentPos.x) * 0.01;
viewingvec.v[1] = 0;
viewingvec.v[2] = (y - dragCurrentPos.y) * 0.01;
viewingvec.rotateZ( -(cameraTarget - cameraPos).getZRotation() );
// and use it
cameraPos += viewingvec;
cameraTarget += viewingvec;
}
else // if(dragType == DRAG_NORMAL)
{
// shift camera position by camera target (generate viewing vector)
cameraPos -= cameraTarget;
// reverse z-rotation
double zrotation(cameraPos.getZRotation());
cameraPos.rotateZ( zrotation );
cameraUpVector.rotateZ( zrotation );
// rotate around the x-axis
double xrotation((double)(y - dragCurrentPos.y)/100.0);
if (cameraUpVector.v[2] < 0.0)
xrotation = -xrotation;
cameraPos.rotateX( xrotation );
cameraUpVector.rotateX( xrotation );
// rotate to old z-rotation
cameraPos.rotateZ( -zrotation );
cameraUpVector.rotateZ( -zrotation );
// add new z-rotation
cameraPos.rotateZ( (double)(dragCurrentPos.x - x)/100.0 );
cameraUpVector.rotateZ( (double)(dragCurrentPos.x - x)/100.0 );
// shift camera back into position
cameraPos += cameraTarget;
}
}
else if(visParams.cameraMode == VisualizationParameterSet::FREECAM)
{
if(dragType == DRAG_ROTATE)
{
// get the viewingvec and get some angles
Vector3d viewingvec = cameraTarget - cameraPos;
double zrotation(viewingvec.getZRotation());
viewingvec.rotateZ( zrotation );
double xrotation(viewingvec.getXRotation());
// construct a new translation vector
viewingvec.v[0] = (x - dragCurrentPos.x) * 0.01;
viewingvec.v[1] = (y - dragCurrentPos.y) * 0.01;
viewingvec.v[2] = 0.0;
viewingvec.rotateX( -xrotation );
viewingvec.rotateZ( -zrotation );
// and use it
cameraPos += viewingvec;
cameraTarget += viewingvec;
}
else
{
// shift camera target by camera position (generate viewing vector)
cameraTarget -= cameraPos;
// reverse z-rotation
double zrotation(cameraTarget.getZRotation());
cameraTarget.rotateZ( zrotation );
cameraUpVector.rotateZ( zrotation );
// rotate around the x-axis
double xrotation((double)(dragCurrentPos.y - y)/100.0);
if (cameraUpVector.v[2] < 0.0)
xrotation = -xrotation;
cameraTarget.rotateX( xrotation );
cameraUpVector.rotateX( xrotation );
// rotate to old z-rotation
cameraTarget.rotateZ( -zrotation );
cameraUpVector.rotateZ( -zrotation );
// add new z-rotation
cameraTarget.rotateZ( (double)(dragCurrentPos.x - x)/200.0 );
cameraUpVector.rotateZ( (double)(dragCurrentPos.x - x)/200.0 );
// shift target back into position
cameraTarget += cameraPos;
}
}
else if(visParams.cameraMode == VisualizationParameterSet::PRESENTATION)
{
if(dragType == DRAG_ROTATE)
{
// do nothing
}
else
{
presentationSpeed += (int)((y - dragCurrentPos.y) * 10);
GLHelper::getGLH()->glPrintText(TextObject::COMMON_HINTS, TextObject::WHITE, 2000,
"Camera Speed (circles/sec): %1.3f", 1000.0/(double)presentationSpeed);
}
}
dragCurrentPos.x = x;
dragCurrentPos.y = y;
return true;
}
else // Editor Control
{
if(dragSelection == OBJECT_SELECTION)
{
if(dragMode == APPLY_DYNAMICS)
{
if(dragType == DRAG_ROTATE)
simulation->applyTorqueForSelection(x, y);
else
simulation->applyForceForSelection(x, y);
}
else
{
if(dragType == DRAG_ROTATE)
simulation->rotateObject(x, y);
else
simulation->translateObject(x, y);
}
}
return true;
}
}
