protected override void ToolGUI(SceneView view, Vector3 handlePosition, bool isStatic)
{
Rect rect = Tools.handleRect;
Quaternion rectRotation = Tools.handleRectRotation;
// Draw rect
Vector3[] verts = new Vector3[4];
for (int i = 0; i < 4; i++)
{
Vector3 pos = GetLocalRectPoint(rect, i);
verts[i] = rectRotation * pos + handlePosition;
}
RectHandles.RenderRectWithShadow(false, verts);
// Handle fading
Color oldColor = GUI.color;
float faded = 1;
if (Camera.current)
{
Vector3 viewDir = Camera.current.orthographic ?
Camera.current.transform.forward :
(handlePosition + rectRotation * rect.center - Camera.current.transform.position);
Vector3 rectRight = rectRotation * Vector3.right * rect.width;
Vector3 rectUp = rectRotation * Vector3.up * rect.height;
float visibleSize = Mathf.Sqrt(Vector3.Cross(Vector3.ProjectOnPlane(rectRight, viewDir), Vector3.ProjectOnPlane(rectUp, viewDir)).magnitude);
visibleSize /= HandleUtility.GetHandleSize(handlePosition);
faded = Mathf.Clamp01((visibleSize - kMinVisibleSize) / kMinVisibleSize * 2);
Color fadedColor = oldColor;
fadedColor.a *= faded;
GUI.color = fadedColor;
}
Vector3 oldPivot = Tools.cachedHandlePosition;
// Pivot handle
if (!Tools.vertexDragging)
{
RectTransform rectTransform = Selection.activeTransform.GetComponent <RectTransform>();
bool groupPivot = Selection.transforms.Length > 1;
bool rectTransformPivot = !groupPivot && Tools.pivotMode == PivotMode.Pivot && rectTransform != null;
using (new EditorGUI.DisabledScope(!groupPivot && !rectTransformPivot))
{
EditorGUI.BeginChangeCheck();
Vector3 newPivot = PivotHandleGUI(rect, oldPivot, rectRotation);
if (EditorGUI.EndChangeCheck() && !isStatic)
{
if (groupPivot)
{
Tools.localHandleOffset += Quaternion.Inverse(Tools.handleRotation) * (newPivot - oldPivot);
}
else if (rectTransformPivot)
{
Transform tr = Selection.activeTransform;
Undo.RecordObject(rectTransform, "Move Rectangle Pivot");
Transform space = Tools.rectBlueprintMode && UnityEditorInternal.InternalEditorUtility.SupportsRectLayout(tr) ? tr.parent : tr;
Vector2 offset = space.InverseTransformVector(newPivot - oldPivot);
offset.x /= rectTransform.rect.width;
offset.y /= rectTransform.rect.height;
Vector2 pivot = rectTransform.pivot + offset;
RectTransformEditor.SetPivotSmart(rectTransform, pivot.x, 0, true, space != rectTransform.transform);
RectTransformEditor.SetPivotSmart(rectTransform, pivot.y, 1, true, space != rectTransform.transform);
}
}
}
}
TransformManipulator.BeginManipulationHandling(true);
if (!Tools.vertexDragging)
{
// Resize handles
EditorGUI.BeginChangeCheck();
Vector3 scalePivot = handlePosition;
Vector3 scale = ResizeHandlesGUI(rect, handlePosition, rectRotation, out scalePivot);
if (EditorGUI.EndChangeCheck() && !isStatic)
{
TransformManipulator.SetResizeDelta(scale, scalePivot, rectRotation);
}
bool enableRotation = true;
if (Tools.rectBlueprintMode)
{
foreach (Transform t in Selection.transforms)
{
if (t.GetComponent <RectTransform>() != null)
{
enableRotation = false;
}
}
}
if (enableRotation)
{
// Rotation handles
EditorGUI.BeginChangeCheck();
Quaternion after = RotationHandlesGUI(rect, handlePosition, rectRotation);
if (EditorGUI.EndChangeCheck() && !isStatic)
{
Quaternion delta = Quaternion.Inverse(rectRotation) * after;
float angle;
Vector3 axis;
delta.ToAngleAxis(out angle, out axis);
axis = rectRotation * axis;
Undo.RecordObjects(Selection.transforms, "Rotate");
foreach (Transform t in Selection.transforms)
{
t.RotateAround(handlePosition, axis, angle);
// sync euler hints after a rotate tool update tyo fake continuous rotation
t.SetLocalEulerHint(t.GetLocalEulerAngles(t.rotationOrder));
if (t.parent != null)
{
t.SendTransformChangedScale(); // force scale update, needed if transform has non-uniformly scaled parent.
}
}
Tools.handleRotation = Quaternion.AngleAxis(angle, axis) * Tools.handleRotation;
}
}
}
TransformManipulator.EndManipulationHandling();
TransformManipulator.BeginManipulationHandling(false);
// Move handle
EditorGUI.BeginChangeCheck();
Vector3 newPos = MoveHandlesGUI(rect, handlePosition, rectRotation);
if (EditorGUI.EndChangeCheck() && !isStatic)
{
if (GridSnapping.active)
{
newPos = GridSnapping.Snap(newPos);
}
if (TransformManipulator.HandleHasMoved(newPos))
{
TransformManipulator.SetPositionDelta(newPos, TransformManipulator.mouseDownHandlePosition);
}
}
TransformManipulator.EndManipulationHandling();
GUI.color = oldColor;
}