private void UpdateRotationHandlePosition()
{
GraphicalUiElement singleSelectedObject = null;
if (selectedObjects.Count == 1)
{
singleSelectedObject = selectedObjects[0];
}
if (singleSelectedObject == null)
{
// hide the rotation handles
rotationHandle.Visible = false;
}
else
{
rotationHandle.Visible = true;
// right side
const float minimumOffset = 24;
float xOffset = 0;
if (singleSelectedObject.XOrigin == HorizontalAlignment.Left)
{
xOffset = singleSelectedObject.GetAbsoluteWidth() + minimumOffset;
}
else if (singleSelectedObject.XOrigin == HorizontalAlignment.Center)
{
xOffset = singleSelectedObject.GetAbsoluteWidth() / 2.0f + minimumOffset;
}
else if (singleSelectedObject.XOrigin == HorizontalAlignment.Right)
{
xOffset = minimumOffset;
}
var offset = new Vector2(
xOffset,
0);
MathFunctions.RotateVector(
ref offset, -MathHelper.ToRadians(singleSelectedObject.GetAbsoluteRotation()));
rotationHandle.X = singleSelectedObject.AbsoluteX + offset.X;
// consider the Y
rotationHandle.Y = singleSelectedObject.AbsoluteY + offset.Y;
rotationHandle.Radius = 8 / Renderer.Self.Camera.Zoom;
}
}
private bool SideGrabbingActivityForInstanceSave(float cursorXChange, float cursorYChange, InstanceSave instanceSave, List <ElementWithState> elementStack)
{
float changeXMultiplier;
float changeYMultiplier;
float widthMultiplier;
float heightMultiplier;
CalculateMultipliers(instanceSave, elementStack, out changeXMultiplier, out changeYMultiplier, out widthMultiplier, out heightMultiplier);
AdjustCursorChangeValuesForShiftDrag(ref cursorXChange, ref cursorYChange, instanceSave, elementStack);
bool hasChangeOccurred = false;
Vector2 reposition = new Vector2(cursorXChange * changeXMultiplier, cursorYChange * changeYMultiplier);
// invert Y so up is positive
reposition.Y *= -1;
GraphicalUiElement representation = null;
if (instanceSave != null)
{
representation = WireframeObjectManager.Self.GetRepresentation(instanceSave);
}
else
{
representation = WireframeObjectManager.Self.GetRepresentation(elementStack.Last().Element);
}
float rotation = MathHelper.ToRadians(representation?.GetAbsoluteRotation() ?? 0);
MathFunctions.RotateVector(ref reposition, rotation);
// flip Y back
reposition.Y *= -1;
if (reposition.X != 0)
{
hasChangeOccurred = true;
if (instanceSave != null)
{
EditingManager.Self.ModifyVariable("X", reposition.X, instanceSave);
}
else
{
EditingManager.Self.ModifyVariable("X", reposition.X, elementStack.Last().Element);
}
}
if (reposition.Y != 0)
{
hasChangeOccurred = true;
if (instanceSave != null)
{
EditingManager.Self.ModifyVariable("Y", reposition.Y, instanceSave);
}
else
{
EditingManager.Self.ModifyVariable("Y", reposition.Y, elementStack.Last().Element);
}
}
if (heightMultiplier != 0 && cursorYChange != 0)
{
hasChangeOccurred = true;
if (instanceSave != null)
{
EditingManager.Self.ModifyVariable("Height", cursorYChange * heightMultiplier, instanceSave);
}
else
{
EditingManager.Self.ModifyVariable("Height", cursorYChange * heightMultiplier, elementStack.Last().Element);
}
}
if (widthMultiplier != 0 && cursorXChange != 0)
{
hasChangeOccurred = true;
if (instanceSave != null)
{
EditingManager.Self.ModifyVariable("Width", cursorXChange * widthMultiplier, instanceSave);
}
else
{
EditingManager.Self.ModifyVariable("Width", cursorXChange * widthMultiplier, elementStack.Last().Element);
}
}
return(hasChangeOccurred);
}
