private void DrawCanvas(CanvasContext canvasCtx)
{
var size = canvasCtx.GetRealSize(width, height - toolBarHeight);
if (Event.current.type == EventType.Repaint)
{
GL.PushMatrix();
CreateLineMaterial();
lineMaterial.SetPass(0);
GL.LoadIdentity();
GL.MultMatrix(canvasCtx.GetTRSMatrix(size));
var p1 = canvasCtx.GetLocalPos(new Vector2(0, 1), size);
var p2 = canvasCtx.GetLocalPos(new Vector2(1, 0), size);
GLHelper.DrawGrid(100, new Rect(p1, p2 - p1));
OnDrawCanvas(canvasCtx);
if (canvasCtx.m_isDrawSelection)
{
if (canvasCtx.m_dragStartPosition != canvasCtx.m_curLocalPosition)
{
GLHelper.DrawRectSolid(canvasCtx.m_dragStartPosition, canvasCtx.m_curLocalPosition, new Color(0, 0, 0, 0.5f));
}
}
GL.PopMatrix();
}
}
private void TryDelete(CanvasContext canvasCtx)
{
foreach (var element in new List <CanvasElementBase>(canvasCtx.m_selectedElements))
{
if (element is Point)
{
m_wayPointsData.RemovePoint(element as Point);
}
else if (element is Edge)
{
m_wayPointsData.RemoveEdge(element as Edge);
}
}
canvasCtx.ClearAllSelected();
}
protected override void OnDrawCanvas(CanvasContext canvasCtx)
{
base.OnDrawCanvas(canvasCtx);
foreach (var point in m_wayPointsData.m_points)
{
point.Draw(canvasCtx.IsSelected(point) ? Color.red : Color.blue);
}
foreach (var edge in m_wayPointsData.m_edges)
{
edge.Draw(canvasCtx.IsSelected(edge) ? Color.red : Color.blue);
}
if (m_mode == WayPointsEMode.AddEdge)
{
GLHelper.DrawLine(m_edgeStart.m_position, canvasCtx.m_curLocalPosition, m_addEdgeColor);
}
}
public void InitSubAreaContext()
{
if (m_isInited)
{
return;
}
foreach (var subAreaDef in layoutDef)
{
if (subAreaDef.m_isCanvas)
{
CanvasContext canvasContext = new CanvasContext(subAreaDef);
if (m_defaultCanvasCtx == null)
{
m_defaultCanvasCtx = canvasContext;
}
m_subAreaContexts.Add(subAreaDef.m_id, canvasContext);
}
else
{
m_subAreaContexts.Add(subAreaDef.m_id, new SubAreaContext(subAreaDef));
}
}
m_isInited = true;
}
protected virtual void OnDrawCanvas(CanvasContext canvasCtx)
{
}
protected virtual void ProcessEventInCanvas(CanvasContext canvasCtx)
{
canvasCtx.m_curLocalPosition = canvasCtx.GetLocalPos(canvasCtx.m_curMouseNormalizePosition, canvasCtx.GetRealSize(width, height - toolBarHeight));
//鼠标中键拖动视图
if (Event.current.type == EventType.MouseDrag && Event.current.button == 2)
{
canvasCtx.m_offset += Event.current.delta;
Repaint();
}
//鼠标滚轮缩放视图
if (Event.current.type == EventType.ScrollWheel)
{
canvasCtx.scale += Event.current.delta.y * -0.01f;
Repaint();
}
//选择和移动逻辑
//按下鼠标左键
if (Event.current.type == EventType.MouseDown && Event.current.button == 0)
{
var clickElement = canvasCtx.TestPoint(canvasCtx.m_curLocalPosition);
canvasCtx.m_dragStartPosition = canvasCtx.m_curLocalPosition;
if (clickElement == null)
{
//开始绘制选区
canvasCtx.ClearAllSelected();
canvasCtx.m_isDrawSelection = true;
Repaint();
}
else
{
if (!canvasCtx.IsSelected(clickElement))
{
canvasCtx.ClearAllSelected();
canvasCtx.AddSelected(clickElement);
}
//开始拖动物体
canvasCtx.m_isDragElement = true;
foreach (var element in canvasCtx.m_selectedElements)
{
if (element.canDrag)
{
element.m_dragStartPosition = element.position;
}
}
Repaint();
}
}
//鼠标左键拖动
if (Event.current.type == EventType.MouseDrag && Event.current.button == 0)
{
if (canvasCtx.m_isDragElement)
{
foreach (var element in canvasCtx.m_selectedElements)
{
if (element.canDrag)
{
element.position = element.m_dragStartPosition + (canvasCtx.m_curLocalPosition - canvasCtx.m_dragStartPosition);
}
}
Repaint();
}
}
//松开鼠标左键
if (Event.current.type == EventType.MouseUp && Event.current.button == 0)
{
//结束绘制选区，根据画出的选取选择对象
if (canvasCtx.m_isDrawSelection == true)
{
canvasCtx.m_isDrawSelection = false;
var selections = canvasCtx.TestRect(canvasCtx.m_dragStartPosition, canvasCtx.m_curLocalPosition);
canvasCtx.ClearAllSelected();
canvasCtx.AddSelected(selections);
Repaint();
}
else if (canvasCtx.m_isDragElement)
{
canvasCtx.m_isDragElement = false;
}
}
}
protected override void ProcessEventInCanvas(CanvasContext canvasCtx)
{
base.ProcessEventInCanvas(canvasCtx);
if (m_mode == WayPointsEMode.None)
{
if (Event.current.type == EventType.MouseDown && Event.current.button == 0)
{
//双击边改变方向
var element = canvasCtx.TestPoint(canvasCtx.m_curLocalPosition);
if (element != null)
{
if (element is Edge && element == m_lastClickElement)
{
if (m_frameCount - m_lastClickFrame < 40)
{
m_lastClickFrame = m_frameCount;
(element as Edge).ChangeDir();
}
}
m_lastClickFrame = m_frameCount;
Debug.Log(m_lastClickFrame);
m_lastClickElement = element;
}
//添加点
if (Event.current.control)
{
m_wayPointsData.AddPoint(canvasCtx.m_curLocalPosition);
}
}
if (Event.current.type == EventType.MouseDown && Event.current.button == 1)
{
//在点上点击鼠标右键开始添加边
var element = canvasCtx.TestPoint(canvasCtx.m_curLocalPosition);
if (element != null && element is Point)
{
m_edgeStart = element as Point;
m_mode = WayPointsEMode.AddEdge;
}
}
//删除所选
if (Event.current.type == EventType.KeyDown && Event.current.keyCode == KeyCode.Delete)
{
TryDelete(canvasCtx);
}
}
else if (m_mode == WayPointsEMode.AddEdge)
{
var element = canvasCtx.TestPoint(canvasCtx.m_curLocalPosition);
bool canAddEdge = element != null && element is Point && element != m_edgeStart && !m_wayPointsData.ContainEdge(m_edgeStart, element as Point);
if (canAddEdge)
{
m_addEdgeColor = Color.green;
}
else
{
m_addEdgeColor = Color.red;
}
//松开鼠标右键添加边
if (Event.current.type == EventType.MouseUp && Event.current.button == 1)
{
if (canAddEdge)
{
m_wayPointsData.AddEdge(m_edgeStart as Point, element as Point);
}
m_mode = WayPointsEMode.None;
}
else if (Event.current.type == EventType.MouseDown && Event.current.button == 0)
{
//添加点自动连成边，并继续添加边
var node = m_wayPointsData.AddPoint(canvasCtx.m_curLocalPosition);
m_wayPointsData.AddEdge(m_edgeStart as Point, node);
m_edgeStart = node;
}
}
}
