void HighlightHoveringLine()
{
if (lastHoverLine != null && lastHoverLine != selectedLine)
{
lastHoverLine.SetSelectState(InteractiveLine.SelectState.NONE);
}
Ray ray = HandleUtility.GUIPointToWorldRay(Event.current.mousePosition);
Vector3 worldMousePos = ray.origin;
InteractiveLine closestLine = ApproximateBinarySearch(horizontalLinesByY, worldMousePos.y);
if (closestLine == null)
{
closestLine = ApproximateBinarySearch(verticalLinesByX, worldMousePos.x);
}
if (closestLine != null && closestLine.selectState == InteractiveLine.SelectState.IMMOBILE)
{
closestLine = null;
}
if (closestLine != null && closestLine != selectedLine)
{
closestLine.SetSelectState(InteractiveLine.SelectState.HOVER);
}
lastHoverLine = closestLine;
}
// Adds a cell to the grid where other lines cannot pass inside of
// Paramter cellCorners is array of 4 Vector3 representing corners of cell in order bottom left, top left, top right, bottom right
public void AddIsolatedCell(Vector3[] cellCorners)
{
isolatedCellMinMaxs.Add(new Vector4(cellCorners[0].x, cellCorners[2].x, cellCorners[0].y, cellCorners[2].y));
// Remove any non-immobile lines inside the new isolated cell area
float[] xCoordinates = verticalLinesByX.Keys.ToArray();
float[] yCoordinates = horizontalLinesByY.Keys.ToArray();
bool exactMatchFound;
int lowerXBoundIndex = InterpretArrayBinarySearchIndex(Array.BinarySearch(xCoordinates, cellCorners[0].x), out exactMatchFound);
int upperXBoundIndex = InterpretArrayBinarySearchIndex(Array.BinarySearch(xCoordinates, cellCorners[2].x), out exactMatchFound);
int lowerYBoundIndex = InterpretArrayBinarySearchIndex(Array.BinarySearch(yCoordinates, cellCorners[0].y), out exactMatchFound);
int upperYBoundIndex = InterpretArrayBinarySearchIndex(Array.BinarySearch(yCoordinates, cellCorners[2].y), out exactMatchFound);
for (; lowerXBoundIndex < upperXBoundIndex; ++lowerXBoundIndex)
{
if (lowerXBoundIndex < xCoordinates.Length && verticalLinesByX[xCoordinates[lowerXBoundIndex]].selectState != InteractiveLine.SelectState.IMMOBILE)
{
DestroyImmediate(verticalLinesByX[xCoordinates[lowerXBoundIndex]]);
verticalLinesByX.Remove(xCoordinates[lowerXBoundIndex]);
}
}
for (; lowerYBoundIndex < upperYBoundIndex; ++lowerYBoundIndex)
{
if (lowerYBoundIndex < yCoordinates.Length && horizontalLinesByY[yCoordinates[lowerYBoundIndex]].selectState != InteractiveLine.SelectState.IMMOBILE)
{
DestroyImmediate(horizontalLinesByY[yCoordinates[lowerYBoundIndex]]);
horizontalLinesByY.Remove(yCoordinates[lowerYBoundIndex]);
}
}
InteractiveLine line = AddLine(cellCorners[0], cellCorners[1]);
line.SetSelectState(InteractiveLine.SelectState.IMMOBILE);
line = AddLine(cellCorners[1], cellCorners[2]);
line.SetSelectState(InteractiveLine.SelectState.IMMOBILE);
line = AddLine(cellCorners[3], cellCorners[2]);
line.SetSelectState(InteractiveLine.SelectState.IMMOBILE);
line = AddLine(cellCorners[0], cellCorners[3]);
line.SetSelectState(InteractiveLine.SelectState.IMMOBILE);
}
public void OnSceneGUI()
{
if (drawGrid)
{
int controlID = EditorGUIUtility.GetControlID(FocusType.Passive);
switch (Event.current.GetTypeForControl(controlID))
{
// On Layout event (the first event for initialization) record grid as being 0 units away if mouse within grid bounds
// else declare infinity away to steal clicks and avoid deselection
case EventType.Layout:
if (selectedLine == null)
{
Vector3 worldMousePos = HandleUtility.GUIPointToWorldRay(Event.current.mousePosition).origin;
if (worldMousePos.x >= minX && worldMousePos.x <= maxX && worldMousePos.y >= minY && worldMousePos.y <= maxY)
{
HandleUtility.AddControl(controlID, 0f);
}
else
{
HandleUtility.AddControl(controlID, Mathf.Infinity);
}
}
else
{
HandleUtility.AddDefaultControl(controlID);
}
break;
// All other events perform logic and draw like normal
default:
HighlightHoveringLine();
if (Event.current.type == EventType.MouseUp)
{
if (selectedLine != null)
{
selectedLine.SetSelectState(InteractiveLine.SelectState.NONE);
}
selectedLine = lastHoverLine;
if (selectedLine != null)
{
selectedLine.SetSelectState(InteractiveLine.SelectState.SELECTED);
Event.current.Use();
}
}
if (selectedLine == null)
{
ShowAddLineButtons();
}
break;
}
}
}