/// <summary>
/// 绘制Border的Gizmos
/// </summary>
protected void EditorDrawBorderGizmos()
{
Color old = Gizmos.color;
GUIStyle textStyle = new GUIStyle();
textStyle.normal.textColor = m_EditorBorderColor;
// 获取边框左下角与右上角的世界坐标
Vector3 leftDown = grid.GetCellCenterWorld(leftDownPosition) - halfCellSize;
Vector3 rightUp = grid.GetCellCenterWorld(rightUpPosition) + halfCellSize;
// 绘制左下角Cell与右上角Cell的Position
Handles.Label(leftDown, (new Vector2Int(leftDownPosition.x, leftDownPosition.y)).ToString(), textStyle);
Handles.Label(rightUp, (new Vector2Int(rightUpPosition.x, rightUpPosition.y)).ToString(), textStyle);
if (mapRect.width > 0 && mapRect.height > 0)
{
Gizmos.color = m_EditorBorderColor;
// 边框的长与宽
Vector3 size = Vector3.Scale(new Vector3(width, height), grid.cellSize);
// 边框的中心坐标
Vector3 center = leftDown + size / 2f;
// 绘制边框
Gizmos.DrawWireCube(center, size);
}
Gizmos.color = old;
}
public static void DrawLabel(Vector3 position, string text, GUIStyle style = default(GUIStyle), Color color = default(Color), float offsetX = 0f, float offsetY = 0f)
{
#if UNITY_EDITOR
if (IsHandleHackAvailable)
{
Transform cam = UnityEditor.SceneView.currentDrawingSceneView != null ?
UnityEditor.SceneView.currentDrawingSceneView.camera.transform : // Scene View
Camera.main.transform; // Only Game View
if (Vector3.Dot(cam.forward, position - cam.position) > 0)
{
Vector3 pos = position;
if (offsetX != 0f || offsetY != 0f)
{
Vector3 camRightVector = cam.right * offsetX; // base on view
pos += camRightVector + new Vector3(0f, offsetY, 0f); // base on target
}
if (style == default(GUIStyle))
{
if (color == default(Color))
{
Handles.Label(pos, text, GUI.skin.textArea);
}
else
{
style = new GUIStyle(GUI.skin.textArea);
Color old = style.normal.textColor;
style.normal.textColor = color;
Handles.Label(pos, text, style);
style.normal.textColor = old;
}
}
else
{
if (color == default(Color))
{
Handles.Label(pos, text, style);
}
else
{
Color old = style.normal.textColor;
style.normal.textColor = color;
Handles.Label(pos, text, style);
style.normal.textColor = old;
}
}
}
}
#endif
}
/// <summary>
/// 绘制Cell的Gizmos
/// </summary>
protected void EditorDrawCellGizmos()
{
// 用于获取鼠标位置
Event e = Event.current;
if (e.type != EventType.Repaint)
{
return;
}
// 获取当前操作Scene面板
SceneView sceneView = SceneView.currentDrawingSceneView;
if (sceneView == null)
{
return;
}
Color old = Gizmos.color;
/// 获取鼠标世界坐标：
/// Event是从左上角(Left Up)开始，
/// 而Camera是从左下角(Left Down)，
/// 需要转换才能使用Camera的ScreenToWorldPoint方法。
Vector2 screenPosition = new Vector2(e.mousePosition.x, sceneView.camera.pixelHeight - e.mousePosition.y);
Vector2 worldPosition = sceneView.camera.ScreenToWorldPoint(screenPosition);
// 当前鼠标所在Cell的Position
Vector3Int cellPostion = grid.WorldToCell(worldPosition);
// 当前鼠标所在Cell的Center坐标
Vector3 cellCenter = grid.GetCellCenterWorld(cellPostion);
/// 绘制当前鼠标下的Cell边框与Position
/// 如果包含Cell，正常绘制
/// 如果不包含Cell，改变颜色，并多绘制一个叉
if (Contains(cellPostion))
{
GUIStyle textStyle = new GUIStyle();
textStyle.normal.textColor = m_EditorCellColor;
Gizmos.color = m_EditorCellColor;
Handles.Label(cellCenter - halfCellSize, (new Vector2Int(cellPostion.x, cellPostion.y)).ToString(), textStyle);
Gizmos.DrawWireCube(cellCenter, grid.cellSize);
}
else
{
GUIStyle textStyle = new GUIStyle();
textStyle.normal.textColor = m_EditorErrorColor;
Gizmos.color = m_EditorErrorColor;
Handles.Label(cellCenter - halfCellSize, (new Vector2Int(cellPostion.x, cellPostion.y)).ToString(), textStyle);
Gizmos.DrawWireCube(cellCenter, grid.cellSize);
// 绘制Cell对角线
Vector3 from = cellCenter - halfCellSize;
Vector3 to = cellCenter + halfCellSize;
Gizmos.DrawLine(from, to);
float tmpX = from.x;
from.x = to.x;
to.x = tmpX;
Gizmos.DrawLine(from, to);
}
Gizmos.color = old;
}