internal void correctCameraPositionForIncludingTextLabels(ViewPort viewport)
{
_cam.SetViewPort(viewport);
_cam.shoot(_cameraMode);
_axe.Draw(_cam);
Clear();
AxeBox abox = (AxeBox)_axe;
BoundingBox3d newBounds = abox.WholeBounds.scale(_scaling);
if (_viewmode == Modes.ViewPositionMode.TOP)
{
float radius = (float)Math.Max(newBounds.xmax - newBounds.xmin, newBounds.ymax - newBounds.ymin);
radius += radius * STRETCH_RATIO;
_cam.RenderingSphereRadius = radius;
}
else
{
_cam.RenderingSphereRadius = (float)newBounds.getRadius();
Coord3d target = newBounds.getCenter();
Coord3d eye = _viewpoint.cartesian().@add(target);
_cam.Target = target;
_cam.Eye = eye;
}
}
internal void ApplyViewPort()
{
//Stretch projection on the whole viewport
if (_stretchToFill)
{
_screenXOffset = _screenLeft;
_screenYOffset = 0;
GL.Viewport(_screenXOffset, _screenYOffset, _screenWidth, _screenHeight);
_lastViewPort = new ViewPort(_screenWidth, _screenHeight, _screenXOffset, _screenYOffset);
//Set the projection into the largest square area centered in the window slice
}
else
{
_screenSquaredDim = Math.Min(_screenWidth, _screenHeight);
_screenXOffset = _screenLeft + _screenWidth / 2 - _screenSquaredDim / 2;
_screenYOffset = _screenHeight / 2 - _screenSquaredDim / 2;
GL.Viewport(_screenXOffset, _screenYOffset, _screenSquaredDim, _screenSquaredDim);
_lastViewPort = new ViewPort(_screenSquaredDim, _screenSquaredDim, _screenXOffset, _screenYOffset);
}
if (_screenGridDisplayed)
{
renderSubScreenGrid();
}
}
/// <summary>
/// Renders all provided Tooltips and Renderer2ds on top of
/// the scene.
///
/// Due to the behaviour of the Overlay implementation, Java2d
/// geometries must be drawn relative to the Chart's
/// IScreenCanvas, BUT will then be stretched to fit in the
/// Camera's viewport. This bug is very important to consider, since
/// the Camera's viewport may not occupy the full IScreenCanvas.
/// Indeed, when View is not maximized (like the default behaviour), the
/// viewport remains square and centered in the canvas, meaning the Overlay
/// won't cover the full canvas area.
///
/// In other words, the following piece of code draws a border around the
/// View, and not around the complete chart canvas, although queried
/// to occupy chart canvas dimensions:
///
/// g2d.drawRect(1, 1, chart.getCanvas().getRendererWidth()-2,
/// chart.getCanvas().getRendererHeight()-2);
///
/// renderOverlay() must be called while the OpenGL2 context for the
/// drawable is current, and after the OpenGL2 scene has been rendered.
/// </summary>
/// <param name="viewport"></param>
/// <remarks></remarks>
public void RenderOverlay(ViewPort viewport)
{
// NOT Implemented so far
}
public void UpdateCamera(ViewPort viewport, BoundingBox3d boundsScaled, float sceneRadiusScaled)
{
Coord3d target = _center.multiply(_scaling);
Coord3d eye = default(Coord3d);
_viewpoint.z = sceneRadiusScaled * 2;
// maintain a reasonnable distance to the scene for viewing it
switch (_viewmode)
{
case Modes.ViewPositionMode.FREE:
eye = _viewpoint.cartesian().@add(target);
break;
case Modes.ViewPositionMode.TOP:
eye = _viewpoint;
eye.x = -PI_div2;
// on x
eye.y = PI_div2;
// on top
eye = eye.cartesian().@add(target);
break;
case Modes.ViewPositionMode.PROFILE:
eye = _viewpoint;
eye.y = 0;
eye = eye.cartesian().@add(target);
break;
default:
throw new Exception("Unsupported viewmode : " + _viewmode);
}
Coord3d up = default(Coord3d);
if (Math.Abs(_viewpoint.y) == PI_div2)
{
// handle up vector
Coord2d direction = new Coord2d(_viewpoint.x, _viewpoint.y).cartesian();
if (_viewpoint.y > 0)
{
// on top
up = new Coord3d(-direction.x, -direction.y, 0);
}
else
{
up = new Coord3d(direction.x, direction.y, 0);
}
// handle "on-top" events
if (!_wasOnTopAtLastRendering)
{
_wasOnTopAtLastRendering = true;
fireViewOnTopEvent(true);
}
}
else
{
// handle up vector
up = new Coord3d(0, 0, 1);
// handle "on-top" events
if (_wasOnTopAtLastRendering)
{
_wasOnTopAtLastRendering = false;
fireViewOnTopEvent(false);
}
}
// Apply camera settings
_cam.Target = target;
_cam.Up = up;
_cam.Eye = eye;
// Set rendering volume
if (_viewmode == Modes.ViewPositionMode.TOP)
{
_cam.RenderingSphereRadius = (float)(Math.Max(boundsScaled.xmax - boundsScaled.xmin, boundsScaled.ymax - boundsScaled.ymin) / 2);
// correctCameraPositionForIncludingTextLabels(viewport) ' quite experimental !
}
else
{
_cam.RenderingSphereRadius = sceneRadiusScaled;
}
// Setup camera (i.e. projection matrix)
//cam.setViewPort(canvas.getRendererWidth(),
// canvas.getRendererHeight(), left, right);
_cam.SetViewPort(viewport);
_cam.shoot(_cameraMode);
}
public void UpdateCamera(ViewPort viewport, BoundingBox3d boundsScaled)
{
UpdateCamera(viewport, boundsScaled, (float)boundsScaled.getRadius());
}
