/// <summary>
/// Draws the Node Canvas on the screen in the rect specified by editorState. Has to be called out of any GUI Group or area because of zooming.
/// </summary>
public static void DrawCanvas(NodeCanvas nodeCanvas, NodeEditorState editorState, Action repaint)
{
if (!editorState.drawing)
{
return;
}
curNodeCanvas = nodeCanvas;
curEditorState = editorState;
if (repaint != null)
{
Repaint += repaint;
}
// if (curEditorState.parent != null)
// curEditorState.canvasRect.position += curEditorState.parent.zoomPanAdjust;
if (Event.current.type == EventType.Repaint)
{ // Draw Background when Repainting
GUI.BeginClip(curEditorState.canvasRect);
float width = Background.width / curEditorState.zoom;
float height = Background.height / curEditorState.zoom;
Vector2 offset = new Vector2((curEditorState.panOffset.x / curEditorState.zoom) % width - width,
(curEditorState.panOffset.y / curEditorState.zoom) % height - height);
int tileX = Mathf.CeilToInt((curEditorState.canvasRect.width + (width - offset.x)) / width);
int tileY = Mathf.CeilToInt((curEditorState.canvasRect.height + (height - offset.y)) / height);
for (int x = 0; x < tileX; x++)
{
for (int y = 0; y < tileY; y++)
{
Rect texRect = new Rect(offset.x + x * width,
offset.y + y * height,
width, height);
GUI.DrawTexture(texRect, Background);
}
}
GUI.EndClip();
}
// if (curEditorState.parent != null)
// curEditorState.canvasRect.position -= curEditorState.parent.zoomPanAdjust - curEditorState.parent.zoomPos;
// Fetch all nested nodeEditors and set their canvasRects to be ignored by input,
// so it can be handled later, and note it down, as it will be drawn later ontop
List <Rect> ignoreInput = new List <Rect> ();
for (int childCnt = 0; childCnt < curEditorState.childs.Count; childCnt++)
{
if (curEditorState.childs [childCnt].drawing)
{
NodeEditorState nestedEditor = curEditorState.childs [childCnt];
ignoreInput.Add(GUIToScreenRect(nestedEditor.canvasRect));
}
}
// Check the inputs
InputEvents(ignoreInput);
// We want to scale our nodes, but as GUI.matrix also scales our widnow's clipping group,
// we have to scale it up first to receive a correct one as a result
#region Scale Setup
// End the default clipping group
GUI.EndGroup();
// The Rect of the new clipping group to draw our nodes in
Rect ScaledCanvasRect = ScaleRect(curEditorState.canvasRect, curEditorState.zoomPos + curEditorState.canvasRect.position, new Vector2(curEditorState.zoom, curEditorState.zoom));
ScaledCanvasRect.y += 23; // Header tab height
if (curNodeCanvas != NodeEditorWindow.MainNodeCanvas)
{
GUI.DrawTexture(ScaledCanvasRect, Background);
}
// Now continue drawing using the new clipping group
GUI.BeginGroup(ScaledCanvasRect);
ScaledCanvasRect.position = Vector2.zero; // Adjust because we entered the new group
// Because I currently found no way to actually scale to the center of the window rather than (0, 0),
// I'm going to cheat and just pan it accordingly to let it appear as if it would scroll to the center
// Note, due to that, other controls are still scaled to (0, 0)
curEditorState.zoomPanAdjust = ScaledCanvasRect.center - curEditorState.canvasRect.size / 2 + curEditorState.zoomPos;
// Take a matrix backup to restore back later on
Matrix4x4 GUIMatrix = GUI.matrix;
// Scale GUI.matrix. After that we have the correct clipping group again.
GUIUtility.ScaleAroundPivot(new Vector2(1 / curEditorState.zoom, 1 / curEditorState.zoom), curEditorState.zoomPanAdjust);
#endregion
// Some features which require drawing (zoomed)
if (curEditorState.navigate)
{ // Draw a curve to the origin/active node for orientation purposes
DrawLine(curEditorState.activeNode != null? curEditorState.activeNode.rect.center + curEditorState.zoomPanAdjust : curEditorState.panOffset,
ScreenToGUIPos(mousePos) + curEditorState.zoomPos * curEditorState.zoom,
Color.black, null, 3);
if (Repaint != null)
{
Repaint();
}
}
if (curEditorState.connectOutput != null)
{ // Draw the currently drawn connection
DrawConnection(curEditorState.connectOutput.GetGUIKnob().center,
ScreenToGUIPos(mousePos) + curEditorState.zoomPos * curEditorState.zoom,
ConnectionTypes.GetTypeData(curEditorState.connectOutput.type).col);
if (Repaint != null)
{
Repaint();
}
}
if (curEditorState.makeTransition != null)
{ // Draw the currently made transition
DrawLine(curEditorState.makeTransition.rect.center + curEditorState.zoomPanAdjust,
ScreenToGUIPos(mousePos) + curEditorState.zoomPos * curEditorState.zoom,
Color.grey, null, 3);
if (Repaint != null)
{
Repaint();
}
}
// Draw the Node connectors; Seperated because of render order
for (int nodeCnt = 0; nodeCnt < curNodeCanvas.nodes.Count; nodeCnt++)
{
curNodeCanvas.nodes [nodeCnt].DrawConnections();
}
for (int nodeCnt = 0; nodeCnt < curNodeCanvas.nodes.Count; nodeCnt++)
{
curNodeCanvas.nodes [nodeCnt].DrawKnobs();
}
for (int nodeCnt = 0; nodeCnt < curNodeCanvas.nodes.Count; nodeCnt++)
{
curNodeCanvas.nodes [nodeCnt].DrawTransitions();
}
// Draw the nodes
for (int nodeCnt = 0; nodeCnt < curNodeCanvas.nodes.Count; nodeCnt++)
{
Node node = curNodeCanvas.nodes [nodeCnt];
//if (node != curEditorState.activeNode)
NodeEditor.DrawNode(node);
}
// Draw the active Node ontop
// if (editorState.activeNode != null)
// NodeEditor.DrawNode (curEditorState.activeNode);
// Draw any node groups out there. Has to be drawn here, because they still need to scale according to their parents, but they mustn't be drawn inside a GUI group
for (int editorCnt = 0; editorCnt < curEditorState.childs.Count; editorCnt++)
{
if (curEditorState.childs [editorCnt].drawing)
{
NodeEditorState nestedEditor = curEditorState.childs [editorCnt];
nestedEditor.canvasRect.position += curEditorState.zoomPanAdjust;
//GUI.DrawTexture (nestedEditor.canvasRect, Background);
DrawCanvas(nestedEditor.canvas, nestedEditor, Repaint);
nestedEditor.canvasRect.position -= curEditorState.zoomPanAdjust;
}
}
curNodeCanvas = nodeCanvas;
curEditorState = editorState;
// End scaling group
// Set default matrix and clipping group for the rest
GUI.matrix = GUIMatrix;
GUI.EndGroup();
if (curNodeCanvas.parent == null)
{
GUI.BeginGroup(new Rect(0, 23, NodeEditorWindow.editor.position.width, NodeEditorWindow.editor.position.height));
}
else
{
Rect parentGroupRect = ScaleRect(curEditorState.parent.canvasRect, curEditorState.parent.zoomPos + curEditorState.parent.canvasRect.position, new Vector2(curEditorState.parent.zoom, curEditorState.parent.zoom));
parentGroupRect.y += 23; // Header tab height
GUI.BeginGroup(parentGroupRect);
}
// Check events with less priority than node GUI controls
LateEvents(ignoreInput);
}