private void OnEditorModeRadioButtonChecked(object sender, RoutedEventArgs e)
{
if (!this.IsLoaded)
{
return;
}
_currentEditorMode = (CreateRadioButton.IsChecked ?? false) ? EditorModes.Create :
EditorModes.Edit;
_currentObjectCreationState = (_currentEditorMode == EditorModes.Create) ? ObjectCreationStates.SelectStartPoint :
ObjectCreationStates.None;
UpdateEditorModeUI();
}
private void ViewportBorder_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (_currentObjectCreationState != ObjectCreationStates.SelectBaseSize)
{
return;
}
double boxWidth = _selectedObjectScaleTransform.ScaleX;
double boxDepth = _selectedObjectScaleTransform.ScaleZ;
if (boxWidth * boxDepth < 1)
{
// Box too small - user probably only clicked with the mouse and did not make a drag to define the base size
// Remove the added object
_currentObjectCreationState = ObjectCreationStates.SelectStartPoint;
ObjectsVisual.Children.Remove(_selectedModelVisual3D);
return;
}
_selectHeightStartMousePosition = e.GetPosition(MainViewport);
// Now we will measure how much is one pixel on screen in 3D
// This will be used in setting the height of the object with moving the mouse up
Point3D p1 = _lastIntersectionPoint;
Point3D p2 = new Point3D(p1.X, p1.Y + 1, p1.Z);
Point p1_screen = Camera1.Point3DTo2D(p1);
Point p2_screen = Camera1.Point3DTo2D(p2);
// We have the base object - now define the height
_screenTo3DFactor = 1.0 / Math.Abs(p2_screen.Y - p1_screen.Y);
if (CreateBoxButton.IsChecked ?? false)
{
_currentObjectCreationState = ObjectCreationStates.SelectHeight;
}
else
{
_currentObjectCreationState = ObjectCreationStates.SelectStartPoint;
}
}
private void ProcessCreateMouseButtonPressed(MouseButtonEventArgs e)
{
if (_currentObjectCreationState == ObjectCreationStates.SelectStartPoint)
{
_objectStartPosition = _lastIntersectionPoint;
if (CreateBoxButton.IsChecked ?? false)
{
var newBoxVisual = new BoxVisual3D()
{
Material = _standardMaterial,
BackMaterial = _standardBackMaterial,
FreezeMeshGeometry3D = false, // Do not freeze and cache the MeshGeometry3D because we can change its positions
UseCachedMeshGeometry3D = false
};
// NOTE:
// We create the Box with its default size (1,1,1) and at its default position (0,0,0)
// We will not change those two properties because each of them triggers regeneration of the geometry.
// Instead we will define scale and translate transform that will update the 3D Box to the correct size and position.
// This is much better for performance and much more garbage collection friendly
// By default the box is already created on (0,0,0) and with size (1,1,1) so we can comment the following 2 lines:
//_newBoxVisual.CenterPosition = new Point3D(0, 0, 0);
//_newBoxVisual.Size = new Size3D(1, 1, 1);
_selectedObjectScaleTransform = new ScaleTransform3D(0.0, NEW_OBJECT_HEIGHT, 0.0);
_selectedObjectTranslateTransform3D = new TranslateTransform3D(_objectStartPosition.X, _objectStartPosition.Y, _objectStartPosition.Z);
var transform3DGroup = new Transform3DGroup();
transform3DGroup.Children.Add(_selectedObjectScaleTransform);
transform3DGroup.Children.Add(_selectedObjectTranslateTransform3D);
newBoxVisual.Transform = transform3DGroup;
ObjectsVisual.Children.Add(newBoxVisual);
_selectedModelVisual3D = newBoxVisual;
}
else
{
var newSphereVisual3D = new SphereVisual3D()
{
Material = _standardMaterial,
BackMaterial = _standardBackMaterial,
FreezeMeshGeometry3D = false, // Do not freeze and cache the MeshGeometry3D because we can change its positions
UseCachedMeshGeometry3D = false
};
_selectedObjectScaleTransform = new ScaleTransform3D(NEW_OBJECT_HEIGHT, NEW_OBJECT_HEIGHT, NEW_OBJECT_HEIGHT);
_selectedObjectTranslateTransform3D = new TranslateTransform3D(_objectStartPosition.X, _objectStartPosition.Y, _objectStartPosition.Z);
var transform3DGroup = new Transform3DGroup();
transform3DGroup.Children.Add(_selectedObjectScaleTransform);
transform3DGroup.Children.Add(_selectedObjectTranslateTransform3D);
newSphereVisual3D.Transform = transform3DGroup;
ObjectsVisual.Children.Add(newSphereVisual3D);
_selectedModelVisual3D = newSphereVisual3D;
}
// Change state from SelectStartPoint => SelectBaseSize
_currentObjectCreationState = ObjectCreationStates.SelectBaseSize;
}
else if (_currentObjectCreationState == ObjectCreationStates.SelectHeight)
{
// Finish box creation
// Change state from SelectBaseSize => SelectStartPoint
_currentObjectCreationState = ObjectCreationStates.SelectStartPoint;
}
}
void SceneEditor_Loaded(object sender, RoutedEventArgs e)
{
ResetCamera();
_currentObjectCreationState = ObjectCreationStates.SelectStartPoint;
}
