/*
* 名称：添加顶点信息
* 摘要：
* 1、向正在绘制的图形添加一个顶点；
* 2、若顶点数量达到图形所允许的最大值，则自动完成绘制
*/
public eCustomGraphStatus AddVertex(int _x, int _y)
{
lock (mLockObject)
{
if (eCustomGraphStatus.BeDrawing == m_status)
{
if (!m_bModifyInfo)
{
m_graphVertex.Add(new strCustomPoint(_x, _y));
int vertexCount = m_graphVertex.Count;
switch (m_drawType)
{
case eCustomGraphDrawType.Line:
case eCustomGraphDrawType.DirectLine:
if (2 == vertexCount)
{
m_status = eCustomGraphStatus.BeComplete;
}
break;
case eCustomGraphDrawType.Rectangle:
if (2 == vertexCount)
{
int x = m_graphVertex[0].X <= m_graphVertex[1].X ? m_graphVertex[0].X : m_graphVertex[1].X;
int y = m_graphVertex[0].Y <= m_graphVertex[1].Y ? m_graphVertex[0].Y : m_graphVertex[1].Y;
int w = m_graphVertex[0].X + m_graphVertex[1].X - 2 * x;
int h = m_graphVertex[0].Y + m_graphVertex[1].Y - 2 * y;
m_graphVertex[0] = new strCustomPoint(x, y);
m_graphVertex[1] = new strCustomPoint(w, h);
m_status = eCustomGraphStatus.BeComplete;
}
break;
case eCustomGraphDrawType.DoubleLine:
case eCustomGraphDrawType.Quadrangle:
if (4 == vertexCount)
{
m_status = eCustomGraphStatus.BeComplete;
}
break;
case eCustomGraphDrawType.Polygon:
if (CustomGraphMacro.MaxVertexNum == vertexCount)
{
m_status = eCustomGraphStatus.BeComplete;
}
break;
default:
break;
}
if (eCustomGraphStatus.BeComplete == m_status)
{
calculateGraphBorder();
}
}
}
return(m_status);
}
}
/*
* 名称：移动图形
* 摘要：
* 1、该函数对所有图形有效；
* 2、请注意矩形的存储格式(x,y)(w,h)，只需移动(x,y)即可；
*/
private bool moveGraph(Int32 _xInfo, Int32 _yInfo)
{
if (eCustomGraphDrawType.Rectangle == m_drawType)
{
m_graphVertex[0] = new strCustomPoint(m_graphVertex[0].X + _xInfo, m_graphVertex[0].Y + _yInfo);
}
else
{
int vertexNum = m_graphVertex.Count;
for (int i = 0; i < vertexNum; i++)
{
m_graphVertex[i] = new strCustomPoint(m_graphVertex[i].X + _xInfo, m_graphVertex[i].Y + _yInfo);
}
}
return(true);
}
/*
* 名称：修改图形指定顶点坐标
* 摘要：
* 1、该函数对所有类型的图形有效；
* 2、修改矩形顶点时，请注意矩形存储的格式(x,y)(w,h)
*/
private bool modifyGraphVertex(Int32 _xInfo, Int32 _yInfo)
{
if (eCustomGraphDrawType.Rectangle == m_drawType)
{
int[] xAng = new int[4];
int[] yAng = new int[4];
xAng[0] = m_graphVertex[0].X;
yAng[0] = m_graphVertex[0].Y;
xAng[1] = m_graphVertex[0].X + m_graphVertex[1].X;
yAng[1] = m_graphVertex[0].Y;
xAng[2] = m_graphVertex[0].X + m_graphVertex[1].X;
yAng[2] = m_graphVertex[0].Y + m_graphVertex[1].Y;
xAng[3] = m_graphVertex[0].X;
yAng[3] = m_graphVertex[0].Y + m_graphVertex[1].Y;
int orgId = m_modifyId + 2;
if (orgId >= 4)
{
orgId -= 4;
}
int orgX = xAng[orgId];
int orgY = yAng[orgId];
int x = orgX <= _xInfo ? orgX : _xInfo;
int y = orgY <= _yInfo ? orgY : _yInfo;
int w = orgX + _xInfo - 2 * x;
int h = orgY + _yInfo - 2 * y;
m_graphVertex[0] = new strCustomPoint(x, y);
m_graphVertex[1] = new strCustomPoint(w, h);
return(true);
}
else
{
if (m_modifyId >= 0 && m_modifyId < m_graphVertex.Count)
{
m_graphVertex[m_modifyId] = new strCustomPoint(_xInfo, _yInfo);
return(true);
}
else
{
return(false);
}
}
}