protected void DrawPoint(ICanvas canvas, Pen pen, Brush fillBrush)
{
Rectangle screenrect = ScreenUtils.ConvertRect(ScreenUtils.ToScreenNormalized(canvas, m_boundingRect));
canvas.Graphics.DrawRectangle(pen, screenrect);
screenrect.X++;
screenrect.Y++;
screenrect.Width--;
screenrect.Height--;
if (fillBrush != null)
{
canvas.Graphics.FillRectangle(fillBrush, screenrect);
}
}
static public void DrawNode(ICanvas canvas, UnitPoint nodepoint)
{
RectangleF r = new RectangleF(canvas.ToScreen(nodepoint), new SizeF(0, 0));
r.Inflate(3, 3);
if (r.Right < 0 || r.Left > canvas.ClientRectangle.Width)
{
return;
}
if (r.Top < 0 || r.Bottom > canvas.ClientRectangle.Height)
{
return;
}
canvas.Graphics.FillRectangle(Brushes.White, r);
r.Inflate(1, 1);
canvas.Graphics.DrawRectangle(Pens.Black, ScreenUtils.ConvertRect(r));
}
bool InitPixelMatrix()
{
if (_canvas is CanvasWrapper)
{
int matrixSize = GetPixelMatrixSize();
if (matrixSize < 1)
{
return(false);
}
if (m_pixelMatrix == null)
{
m_pixelMatrix = new byte[matrixSize, matrixSize];
}
for (int ii = 0; ii < matrixSize; ++ii)
{
for (int jj = 0; jj < matrixSize; ++jj)
{ //init
m_pixelMatrix[ii, jj] = 1; //the path can pass through these point
}
}
bool exportInfo = false;
List <IDrawObject> allObjs = _canvas.DataModel.GetHitObjects(_canvas, ScreenPixelRectToUnitRect(), false);
foreach (var obj in allObjs)
{
DrawTools.RectBase rectBase = obj as DrawTools.RectBase;
if (rectBase == null)
{
continue;
}
Rectangle pixelRect = ScreenUtils.ConvertRect(ScreenUtils.ToScreenNormalized(_canvas, rectBase.GetExactBoundingRect(_canvas)));
pixelRect.Inflate(-1, -1);//make sure the point can lay down on the boundary of rectangle
PopulateValToMatrix(m_pixelMatrix, pixelRect);
//for (int ii = pixelRect.Top; ii < pixelRect.Bottom; ++ii)
//{
// for (int jj = pixelRect.Left; jj < pixelRect.Right; ++jj)
// {
// m_pixelMatrix[jj, ii] = 0;//the path should not pass throught these point
// }
//}
//const int threshold = 10;
//int[] leftXInterval = { pixelRect.Left, pixelRect.Left - threshold };
//int[] rightXInterval = { pixelRect.Right, pixelRect.Right + threshold };
//int[] topAndBottomXInterval = { pixelRect.Left, pixelRect.Right };
//int[] leftAndRightYInterval = { pixelRect.Top, pixelRect.Bottom };
//int[] topYInterval = { pixelRect.Top, pixelRect.Top - threshold };
//int[] bottomYInterval = { pixelRect.Bottom, pixelRect.Bottom + threshold };
//PopulateLinearBoundary(leftXInterval[0], leftXInterval[1], leftAndRightYInterval[0], leftAndRightYInterval[1], true);
//PopulateLinearBoundary(rightXInterval[0], rightXInterval[1], leftAndRightYInterval[0], leftAndRightYInterval[1], true);
//PopulateLinearBoundary(topYInterval[0], topYInterval[1], topAndBottomXInterval[0], topAndBottomXInterval[1], false);
//PopulateLinearBoundary(bottomYInterval[0], bottomYInterval[1], topAndBottomXInterval[0], topAndBottomXInterval[1], false);
//---------------------------------------------------
int nItems = m_pixelMatrix.GetUpperBound(0) + 1;
int maxX = -1, maxY = -1, minX = 100000, minY = 100000;
for (int ii = 0; ii < nItems && exportInfo; ++ii) //row
{
for (int jj = 0; jj < nItems; ++jj) //column
{
int val = m_pixelMatrix[jj, ii];
// Console.Write("{0} ", val);
if (val != 0)
{
continue;
}
if (jj < minX)
{
minX = jj;
}
if (jj > maxX)
{
maxX = jj;
}
if (ii < minY)
{
minY = ii;
}
if (ii > maxY)
{
maxY = ii;
}
}
// Console.Write("\n");
}
//---------------------------------------------------
}
return(true);
}
else
{
System.Diagnostics.Debug.Assert(false);
return(false);
}
}