public void DrawGrid(Rect rect, float zoom, Vector2 panOffset)
{
if (Event.current.control)
{
rect.position = Vector2.zero;
Vector2 center = rect.size / 2f;
Texture2D gridTex = graphEditor.GetGridTexture();
Texture2D crossTex = graphEditor.GetSecondaryGridTexture();
// Offset from origin in tile units
float xOffset = -(center.x * zoom + panOffset.x) / gridTex.width;
float yOffset = ((center.y - rect.size.y) * zoom + panOffset.y) / gridTex.height;
Vector2 tileOffset = new Vector2(xOffset, yOffset);
// Amount of tiles
float tileAmountX = Mathf.Round(rect.size.x * zoom) / gridTex.width;
float tileAmountY = Mathf.Round(rect.size.y * zoom) / gridTex.height;
Vector2 tileAmount = new Vector2(tileAmountX, tileAmountY);
// Draw tiled background
GUI.DrawTextureWithTexCoords(rect, gridTex, new Rect(tileOffset, tileAmount));
GUI.DrawTextureWithTexCoords(rect, crossTex, new Rect(tileOffset + new Vector2(0.5f, 0.5f), tileAmount));
}
}
