/// <summary>
/// Returns the node at the specified canvas-space position in the specified editor and returns a possible focused knob aswell
/// </summary>
public static Node NodeAtPosition(NodeEditorState editorState, Vector2 canvasPos, out NodeKnob focusedKnob)
{
focusedKnob = null;
if (NodeEditorInputSystem.shouldIgnoreInput(editorState))
{
return(null);
}
NodeCanvas canvas = editorState.canvas;
for (int nodeCnt = canvas.nodes.Count - 1; nodeCnt >= 0; nodeCnt--)
{ // Check from top to bottom because of the render order
Node node = canvas.nodes [nodeCnt];
if (node.rect.Contains(canvasPos))
{
return(node);
}
for (int knobCnt = 0; knobCnt < node.nodeKnobs.Count; knobCnt++)
{ // Check if any nodeKnob is focused instead
if (node.nodeKnobs[knobCnt].GetCanvasSpaceKnob().Contains(canvasPos))
{
focusedKnob = node.nodeKnobs[knobCnt];
return(node);
}
}
}
return(null);
}
public static Node NodeAtPosition(NodeEditorState editorState, Vector2 canvasPos, out NodeKnob focusedKnob)
{
focusedKnob = null;
if (NodeEditorInputSystem.shouldIgnoreInput(editorState))
{
return(null);
}
NodeCanvas canvas = editorState.canvas;
for (int num = canvas.nodes.Count - 1; num >= 0; num--)
{
Node node = canvas.nodes[num];
if (node.rect.Contains(canvasPos))
{
return(node);
}
for (int i = 0; i < node.nodeKnobs.Count; i++)
{
if (node.nodeKnobs[i].GetCanvasSpaceKnob().Contains(canvasPos))
{
focusedKnob = node.nodeKnobs[i];
return(node);
}
}
}
return(null);
}
/// <summary>
/// Gets a NodeGroup under the mouse. If multiple groups are adressed, the group lowest in the pin hierarchy is returned.
/// </summary>
private static NodeGroup GroupAtPosition(NodeEditorState state, Vector2 canvasPos)
{
if (NodeEditorInputSystem.shouldIgnoreInput(state))
{
return(null);
}
for (int i = state.canvas.groups.Count - 1; i >= 0; i--)
{
NodeGroup group = state.canvas.groups[i];
if (group.headerRect.Contains(canvasPos) || group.rect.Contains(canvasPos))
{
return(group);
}
}
return(null);
}
/// <summary>
/// Gets a NodeGroup under the mouse. If multiple groups are adressed, the smallest is returned.
/// </summary>
private static NodeGroup GroupAtPosition(NodeEditorState state, Vector2 canvasPos)
{
if (NodeEditorInputSystem.shouldIgnoreInput(state))
{
return(null);
}
NodeCanvas canvas = state.canvas;
for (int groupCnt = canvas.groups.Count - 1; groupCnt >= 0; groupCnt--)
{
if (canvas.groups [groupCnt].rect.Contains(canvasPos) || canvas.groups [groupCnt].headerRect.Contains(canvasPos))
{
return(canvas.groups [groupCnt]);
}
}
return(null);
}
/// <summary>
/// Gets a NodeGroup under the mouse that requires input (header or border). If multiple groups are adressed, the group lowest in the pin hierarchy is returned.
/// 获取鼠标点击的需要执行操作的Group（Header或Border），如果找到了多个group，则只处理第一个group
/// </summary>
private static NodeGroup GroupAtPositionInput(NodeEditorState state, Vector2 canvasPos)
{
if (NodeEditorInputSystem.shouldIgnoreInput(state))
{
return(null);
}
for (int i = state.canvas.groups.Count - 1; i >= 0; i--)
{
NodeGroup group = state.canvas.groups[i];
BorderSelection border;
if (group.headerRect.Contains(canvasPos) || CheckBorderSelection(state, group.bodyRect, canvasPos, out border))
{
return(group);
}
}
return(null);
}
/// <summary>
/// Returns the node at the specified canvas-space position in the specified editor and returns a possible focused knob aswell
/// </summary>
public static Node NodeAtPosition(NodeEditorState editorState, Vector2 canvasPos, out ConnectionKnob focusedKnob)
{
focusedKnob = null;
if (editorState == null || NodeEditorInputSystem.shouldIgnoreInput(editorState))
{
return(null);
}
NodeCanvas canvas = editorState.canvas;
for (int nodeCnt = canvas.nodes.Count - 1; nodeCnt >= 0; nodeCnt--)
{ // Check from top to bottom because of the render order
Node node = canvas.nodes [nodeCnt];
if (node.ClickTest(canvasPos, out focusedKnob))
{
return(node); // Node is clicked on
}
}
return(null);
}