protected override IEnumerable <Vector2> GetSnapPositions(AnchoredJoint2D joint2D, AnchorInfo anchorInfo,
JointHelpers.AnchorBias bias, Vector2 anchorPosition)
{
if (!EditorGUI.actionKey)
{
return(null);
}
var otherBias = bias == JointHelpers.AnchorBias.Main
? JointHelpers.AnchorBias.Connected
: JointHelpers.AnchorBias.Main;
var jointWithDistance = (T)joint2D;
var anchorSliderState = StateObject.Get <AnchorSliderState>(anchorInfo.GetControlID("slider"));
var currentMousePosition = Helpers2D.GUIPointTo2DPosition(Event.current.mousePosition);
var currentAnchorPosition = currentMousePosition - anchorSliderState.mouseOffset;
var otherAnchorPosition = JointHelpers.GetAnchorPosition(jointWithDistance, otherBias);
var diff = otherAnchorPosition - currentAnchorPosition;
if (diff.magnitude <= Mathf.Epsilon)
{
diff = -Vector2.up;
}
var normalizedDiff = diff.normalized;
var wantedAnchorPosition = otherAnchorPosition - normalizedDiff * GetDistance(jointWithDistance);
return(new[] { wantedAnchorPosition });
}
protected override bool PostAnchorGUI(AnchoredJoint2D joint2D, AnchorInfo info, List <Vector2> otherAnchors,
JointHelpers.AnchorBias bias)
{
var wheelJoint2D = joint2D as WheelJoint2D;
if (wheelJoint2D == null)
{
return(false);
}
var suspensionAngleControlID = info.GetControlID("suspensionAngle");
if (Event.current.type == EventType.repaint)
{
if (EditorHelpers.IsWarm(suspensionAngleControlID) && DragAndDrop.objectReferences.Length == 0)
{
var suspensionAngle = wheelJoint2D.suspension.angle;
var labelContent = new GUIContent(String.Format("{0:0.00}", suspensionAngle));
Vector3 mainAnchorPosition = Helpers2D.GUIPointTo2DPosition(Event.current.mousePosition);
var fontSize = HandleUtility.GetHandleSize(mainAnchorPosition) * (1f / 64f);
var labelOffset = fontSize * EditorHelpers.FontWithBackgroundStyle.CalcSize(labelContent).y;
EditorHelpers.OverlayLabel(mainAnchorPosition + (Camera.current.transform.up * labelOffset),
labelContent,
EditorHelpers.FontWithBackgroundStyle);
}
}
else
{
if (EditorHelpers.IsWarm(suspensionAngleControlID) &&
DragAndDrop.objectReferences.Length == 0)
{
if (SceneView.lastActiveSceneView)
{
SceneView.lastActiveSceneView.Repaint();
}
}
}
return(false);
}
protected void DrawAngleWidget(TJointType joint2D, int controlID)
{
var joint2DSettings = GetSettings(joint2D);
var worldAngle = joint2D.transform.eulerAngles.z + GetAngle(joint2D);
HandleDragDrop(controlID, joint2D, joint2DSettings);
EditorGUI.BeginChangeCheck();
JointHelpers.AnchorBias bias;
if (joint2DSettings.anchorPriority == JointSettingsWithBias.AnchorPriority.Main)
{
bias = JointHelpers.AnchorBias.Main;
}
else
{
bias = JointHelpers.AnchorBias.Connected;
}
var oppositeBias = JointHelpers.GetOppositeBias(bias);
var angleWidgetPosition = JointHelpers.GetAnchorPosition(joint2D, bias);
var otherAnchorPosition = JointHelpers.GetAnchorPosition(joint2D, oppositeBias);
var offsetToOther = otherAnchorPosition - angleWidgetPosition;
var newAngle = LineAngleHandle(controlID, worldAngle, angleWidgetPosition, 0.5f, 2);
var mousePosition = Event.current.mousePosition;
EditorHelpers.ContextClick(controlID, () => {
var menu = new GenericMenu();
AddEditAngleMenuItem(joint2D, menu, mousePosition);
menu.ShowAsContext();
});
if (!EditorGUI.EndChangeCheck())
{
return;
}
var snapped = false;
if (EditorGUI.actionKey)
{
var handleSize = HandleUtility.GetHandleSize(angleWidgetPosition);
var mousePosition2D = Helpers2D.GUIPointTo2DPosition(Event.current.mousePosition);
var currentAngleRay = new Ray(angleWidgetPosition, Helpers2D.GetDirection(newAngle));
var mousePositionProjectedToAngle = Helpers2D.ClosestPointToRay(currentAngleRay, mousePosition2D);
var directionsToSnapTo = new List <Vector2> {
(GetTargetPosition(joint2D, bias) - angleWidgetPosition).normalized
};
if (!joint2DSettings.lockAnchors)
{
directionsToSnapTo.Insert(0, offsetToOther.normalized);
}
if (joint2D.connectedBody)
{
directionsToSnapTo.Add(
(GetTargetPosition(joint2D, oppositeBias) - angleWidgetPosition)
.normalized);
}
foreach (var direction in directionsToSnapTo)
{
var rayTowardsDirection = new Ray(angleWidgetPosition, direction);
var closestPointTowardsDirection = Helpers2D.ClosestPointToRay(rayTowardsDirection,
mousePositionProjectedToAngle);
if (Vector2.Distance(closestPointTowardsDirection, mousePositionProjectedToAngle) <
handleSize * 0.125f)
{
var currentDirection = Helpers2D.GetDirection(newAngle);
var closestPositionToDirection =
Helpers2D.ClosestPointToRay(rayTowardsDirection,
angleWidgetPosition + currentDirection);
snapped = true;
newAngle = Helpers2D.GetAngle(closestPositionToDirection - angleWidgetPosition);
break;
}
}
}
var wantedAngle = newAngle - joint2D.transform.eulerAngles.z;
if (!snapped)
{
wantedAngle = Handles.SnapValue(wantedAngle, editorSettings.snapAngle);
}
EditorHelpers.RecordUndo("Alter Angle", joint2D);
if (joint2DSettings.lockAnchors)
{
var angleDelta = Mathf.DeltaAngle(GetAngle(joint2D), wantedAngle);
JointHelpers.SetWorldAnchorPosition(joint2D,
angleWidgetPosition + (Vector2)(Helpers2D.Rotate(angleDelta) * offsetToOther), oppositeBias);
}
SetAngle(joint2D, wantedAngle);
}
