void DrawNodeDragOverlay(Rect bounds)
{
var cursorWorld = camera.ScreenToWorld(lastMousePosition);
var ringTexture = rendererContext.Resources.GetResource <Texture2D>(DungeonEditorResources.TEXTURE_CURSOR_RING_SOLID);
int sx = Mathf.RoundToInt(cursorWorld.x / SCBaseDomainNode.TileSize);
int sy = Mathf.RoundToInt(cursorWorld.y / SCBaseDomainNode.TileSize);
int drawNodeRangeRadius = 4;
float drawPixelRangeRadius = drawNodeRangeRadius * SCBaseDomainNode.TileSize;
float maxCursorSize = 20;
for (int x = sx - drawNodeRangeRadius; x <= sx + drawNodeRangeRadius; x++)
{
for (int y = sy - drawNodeRangeRadius; y <= sy + drawNodeRangeRadius; y++)
{
for (int ox = 0; ox < 2; ox++)
{
for (int oy = 0; oy < 2; oy++)
{
var offset = new Vector2(ox, oy) * 0.5f;
var pos = (new Vector2(x, y) + offset) * SCBaseDomainNode.TileSize;
var distanceToCursor = (pos - cursorWorld).magnitude;
var cursorScale = Mathf.Clamp(1 - distanceToCursor / drawPixelRangeRadius, 0.0f, 1.0f);
// Ease the size
{
cursorScale = Mathf.Pow(cursorScale, 3);
}
float cursorSize = maxCursorSize * cursorScale;
var size = new Vector2(cursorSize, cursorSize);
pos -= size / 2.0f;
pos = camera.WorldToScreen(pos);
size /= camera.ZoomLevel;
var ringBounds = new Rect(pos, size);
var color = new Color(1, 0.3f, 0, cursorScale / 2.0f);
GUI.DrawTexture(ringBounds, ringTexture, ScaleMode.ScaleToFit, true, 1.0f, color, 0, 0);
}
}
}
}
var selectedNodes = GetSelectedNodes();
foreach (var node in selectedNodes)
{
var start = node.Bounds.center;
var end = SCBaseDomainNode.GetSnapPosition(start);
start = camera.WorldToScreen(start);
end = camera.WorldToScreen(end);
Handles.color = new Color(0, 0, 0, 0.5f);
Handles.DrawLine(start, end);
}
}
private void OnNodeDragged_Event(object sender, GraphNodeEventArgs e)
{
foreach (var node in e.Nodes)
{
if (node is SCBaseDomainNode)
{
var baseNode = node as SCBaseDomainNode;
var snappedCenter = SCBaseDomainNode.GetSnapPosition(baseNode.Bounds.center);
bool bCannotBeSnapped = baseNode.ContainsOtherNodeAt(snappedCenter);
baseNode.IsSnapped = !bCannotBeSnapped;
}
}
}