private void RenderLinks(float scale, NodeEditorField highlightedField)
{
foreach (NodeEditorGUI node in _editableObjects)
{
if (node.HasOutput())
{
RenderLinkIcon(node.GetOutputField()._position, kOutputLinkIconColor, scale, false);
}
foreach (NodeEditorField nodeInputField in node.GetInputFields())
{
Color color;
if (_dragMode == eDragType.Custom &&
(nodeInputField._type != _draggingNodeFieldFrom._type && !_draggingNodeFieldFrom._type.IsAssignableFrom(nodeInputField._type)))
{
color = kUnusableLinkIconColor;
}
else
{
color = kInputLinkIconColor;
}
RenderStaticValueBox(nodeInputField, nodeInputField._position, kUnusableLinkIconColor, scale);
RenderLinkIcon(nodeInputField._position, color, scale, nodeInputField == highlightedField);
}
}
foreach (NodeEditorGUI node in _editableObjects)
{
foreach (NodeEditorField nodeInputField in node.GetInputFields())
{
if (_dragMode != eDragType.Custom || _draggingNodeFieldTo != nodeInputField)
{
int linkedOutputNodeId = GetNodeInputFieldLinkNodeId(nodeInputField);
if (linkedOutputNodeId != -1)
{
NodeEditorGUI outputNode = GetEditableObject(linkedOutputNodeId);
if (outputNode != null && outputNode.HasOutput())
{
RenderLink(outputNode.GetOutputField()._position, nodeInputField._position, _dragMode == eDragType.Custom ? Color.Lerp(kLinkLineColor, Color.black, 0.3f) : kLinkLineColor, scale);
}
}
}
}
}
if (_dragMode == eDragType.Custom)
{
//Instead of rendering current dragging link, render it to mouse position
RenderLink(_draggingNodeFieldFrom._position, Event.current.mousePosition, kLinkLineColor, scale, true);
}
}
protected override void OnLeftMouseDown(Event inputEvent)
{
//Check for clicking on a link
NodeEditorField clickedOnNodeFromField = null;
NodeEditorField clickedOnNodeToField = null;
for (int i = 0; i < _editableObjects.Count && clickedOnNodeFromField == null; i++)
{
NodeEditorGUI node = (NodeEditorGUI)_editableObjects[i];
if (node.GetOutputField() != null)
{
Vector2 toField = inputEvent.mousePosition - node.GetOutputField()._position;
if (toField.magnitude < kLinkIconWidth * 0.5f)
{
clickedOnNodeFromField = node.GetOutputField();
break;
}
}
foreach (NodeEditorField nodeInputField in node.GetInputFields())
{
//If has an link going into it we can drag it away
int linkNodeId = GetNodeInputFieldLinkNodeId(nodeInputField);
if (linkNodeId != -1)
{
NodeEditorGUI linkedNode = GetEditableObject(linkNodeId);
if (linkedNode != null)
{
Vector2 toField = inputEvent.mousePosition - nodeInputField._position;
if (toField.magnitude < kLinkIconWidth)
{
clickedOnNodeFromField = linkedNode.GetOutputField();
clickedOnNodeToField = nodeInputField;
break;
}
}
}
}
}
if (clickedOnNodeFromField != null)
{
_draggingNodeFieldFrom = clickedOnNodeFromField;
_draggingNodeFieldTo = clickedOnNodeToField;
_dragMode = eDragType.Custom;
_dragPos = inputEvent.mousePosition;
_dragAreaRect = new Rect(-1.0f, -1.0f, 0.0f, 0.0f);
}
//Normal object clicking
else
{
_dragMode = eDragType.LeftClick;
base.OnLeftMouseDown(inputEvent);
}
}
