private void DrawEdgesForSelectedPoint(Vector3 worldPos)
{
int pathPointCount = EditingPoly.NumVertices;
int v0 = m_SelectedVertex - 1;
if (v0 == -1)
{
v0 = pathPointCount - 1;
}
int v1 = m_SelectedVertex + 1;
if (v1 == pathPointCount)
{
v1 = 0;
}
Vector2 p0, p1;
p0 = EditingPoly.GetVertex(v0);
p1 = EditingPoly.GetVertex(v1);
Vector3 worldPosV0 = EditingScenePoly ? EditingScenePoly.PolygonToWorldSpace(p0) : (Vector3)p0;
Vector3 worldPosV1 = EditingScenePoly ? EditingScenePoly.PolygonToWorldSpace(p1) : (Vector3)p1;
float lineWidth = 4.0f;
Handles.color = m_DeleteMode ? Color.red : Color.green;
Handles.DrawAAPolyLine(lineWidth, new Vector3[] { worldPos, worldPosV0 });
Handles.color = m_DeleteMode ? Color.red : Color.green;
Handles.DrawAAPolyLine(lineWidth, new Vector3[] { worldPos, worldPosV1 });
Handles.color = Color.white;
}
public bool OnSceneGUI()
{
Event evt = Event.current;
m_DeleteMode = evt.command || evt.control;
// Transform transform = m_ActiveCollider.transform; TODO local polygons
// Handles.Slider2D will render active point as yellow if there is keyboardControl set. We don't want that happening.
GUIUtility.keyboardControl = 0;
// HandleUtility.s_CustomPickDistance = k_HandlePickDistance;
// Find mouse positions in local and world space
Vector3 polyOrigin = EditingScenePoly ? EditingScenePoly.transform.position : Vector3.zero;
Plane plane = new Plane(-Vector3.forward, polyOrigin);
Ray mouseRay = HandleUtility.GUIPointToWorldRay(evt.mousePosition);
float dist;
plane.Raycast(mouseRay, out dist);
Vector3 mouseWorldPos = mouseRay.GetPoint(dist);
Vector2 mouseLocalPos = EditingScenePoly ? EditingScenePoly.WorldToPolygonSpace(mouseWorldPos) : (Vector2)mouseWorldPos;
// Select the active vertex and edge
if (evt.type == EventType.MouseMove || m_FirstOnSceneGUIAfterReset)
{
float distance;
m_SelectedVertex = EditingPoly.GetNearestVertex(mouseLocalPos, out distance);
EditingPoly.GetNearestEdge(mouseLocalPos, out m_SelectedEdgeVertex0, out m_SelectedEdgeVertex1, out distance);
if (evt.type == EventType.MouseMove)
{
evt.Use();
}
}
// Do we handle point or line?
if (GUIUtility.hotControl == 0)
{
if (m_SelectedEdgeVertex0 != m_SelectedEdgeVertex1)
{
// Calculate snapping distance
Vector2 point = EditingPoly.GetVertex(m_SelectedVertex);
Vector3 worldPos = EditingScenePoly ? EditingScenePoly.PolygonToWorldSpace(point) : (Vector3)point; // TODO transform.TransformPoint( point );
m_HandleEdge = (HandleUtility.WorldToGUIPoint(worldPos) - Event.current.mousePosition).sqrMagnitude > k_HandlePointSnap * k_HandlePointSnap;
m_HandlePoint = !m_HandleEdge;
}
else
{
m_HandleEdge = false;
m_HandlePoint = m_SelectedVertex >= 0;
}
if (m_DeleteMode && m_HandleEdge)
{
m_HandleEdge = false;
m_HandlePoint = true;
}
}
bool applyToCollider = false;
// Edge handle
if (m_HandleEdge && !m_DeleteMode)
{
Vector2 p0 = EditingPoly.GetVertex(m_SelectedEdgeVertex0);
Vector2 p1 = EditingPoly.GetVertex(m_SelectedEdgeVertex1);
Vector3 worldPosV0 = EditingScenePoly ? EditingScenePoly.PolygonToWorldSpace(p0) : (Vector3)p0;
Vector3 worldPosV1 = EditingScenePoly ? EditingScenePoly.PolygonToWorldSpace(p1) : (Vector3)p1;
Vector3 newPoint = MathUtils.NearestPointOnLine(worldPosV0, worldPosV1, mouseWorldPos);
newPoint.z = polyOrigin.z; // transform.position.z;
float guiSize = HandleUtility.GetHandleSize(newPoint);
bool canDragEdge = (HandleUtility.WorldToGUIPoint(newPoint) - Event.current.mousePosition).sqrMagnitude < guiSize * guiSize;
if (canDragEdge)
{
Handles.color = Color.green;
Handles.DrawAAPolyLine(4.0f, new Vector3[] { worldPosV0, worldPosV1 });
Handles.color = Color.white;
EditorGUI.BeginChangeCheck();
Handles.color = Color.green;
newPoint = Handles.Slider2D(
newPoint,
new Vector3(0, 0, 1),
new Vector3(1, 0, 0),
new Vector3(0, 1, 0),
guiSize * .08f,
Handles.DotHandleCap,
Vector3.zero);
Handles.color = Color.white;
if (EditorGUI.EndChangeCheck())
{
EditingPoly.InsertVertex(m_SelectedEdgeVertex1, (p0 + p1) / 2);
m_SelectedVertex = m_SelectedEdgeVertex1;
m_HandleEdge = false;
m_HandlePoint = true;
applyToCollider = true;
}
}
}
// Point handle
if (m_HandlePoint)
{
Vector2 point = EditingPoly.GetVertex(m_SelectedVertex);
Vector3 worldPos = EditingScenePoly ? EditingScenePoly.PolygonToWorldSpace(point) : (Vector3)point;
Vector2 screenPos = HandleUtility.WorldToGUIPoint(worldPos);
float guiSize = HandleUtility.GetHandleSize(worldPos) * 0.04f;
if (m_DeleteMode && evt.type == EventType.MouseDown &&
Vector2.Distance(screenPos, Event.current.mousePosition) < k_HandlePickDistance ||
DeleteCommandEvent(evt))
{
if (evt.type != EventType.ValidateCommand)
{
if (EditingPoly.NumVertices > m_MinPathPoints)
{
EditingPoly.RemoveVertex(m_SelectedVertex);
Reset();
applyToCollider = true;
}
}
evt.Use();
}
EditorGUI.BeginChangeCheck();
Handles.color = m_DeleteMode ? Color.red : Color.green;
Vector3 newWorldPos = Handles.Slider2D(
worldPos,
new Vector3(0, 0, 1),
new Vector3(1, 0, 0),
new Vector3(0, 1, 0),
guiSize,
Handles.DotHandleCap,
Vector3.zero);
Handles.color = Color.white;
if (EditorGUI.EndChangeCheck() && !m_DeleteMode)
{
point = EditingScenePoly ? EditingScenePoly.WorldToPolygonSpace(newWorldPos) : (Vector2)newWorldPos; //transform.InverseTransformPoint( newWorldPos );
//PolygonEditor.TestPointMove( m_SelectedPath, m_SelectedVertex, point, out m_LeftIntersect, out m_RightIntersect );
EditingPoly.SetVertex(m_SelectedVertex, point);
applyToCollider = true;
}
if (!applyToCollider)
{
DrawEdgesForSelectedPoint(newWorldPos);
}
}
if (DeleteCommandEvent(evt))
{
Event.current.Use(); // If we don't use the delete event in all cases, it sceneview might delete the entire object
}
m_FirstOnSceneGUIAfterReset = false;
return(applyToCollider);
}