private void RenderThreadStart()
{
while (_rendererSignal.WaitOne())
{
RenderArgs e;
lock (this)
{
e = _bgRenderArgs;
if (e == null)
continue;
}
var g = Graphics.FromImage(_backBuffer);
g.Transform = Viewport.GetRotationScaleMatrix(e.Matrix);
/*var invRotScale = e.Matrix;
invRotScale.OffsetX = invRotScale.OffsetY = 0;
invRotScale.Invert();
var translate = e.Matrix * invRotScale;*/
var translate = Viewport.GetTranslateMatrix(e.Matrix);
BeginInvoke(new ThreadStart(RenderingStarted));
if (_renderer != null)
{
try
{
_map.Zoom = e.Scale;
_map.Angle = viewport1.Angle;
//_renderer.Angle = (float);
_renderer.Zoom = e.Scale;
_renderer.Window = e.ViewBox;
_renderer.Matrix = e.Matrix;
_renderer.Translate = translate;
_renderer.BeginScene(g);
_renderer.Render();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
/*}
else
{*/
//g.Clear(Color.Gray);
//draw test rectagle
var rectPosition = translate.Transform(new WinPoint(100.0, 200.0));
PointF rectPositionF = rectPosition.ToPointF();
g.DrawRectangle(Pens.Black, rectPositionF.X, rectPositionF.Y, 100f, 100f);
var p = new WinPoint(100, 200);
p = translate.Transform(p);
g.DrawString("hello world jpgqy", SystemFonts.DefaultFont, Brushes.Black, p.ToPointF(), new System.Drawing.StringFormat { LineAlignment = StringAlignment.Far });
}
BeginInvoke(new ThreadStart(RenderingComplete));
lock (this)
{
var temp = _backBuffer;
_backBuffer = _frontBuffer;
_frontBuffer = temp;
_imageTransform = e.Matrix;
_imageTransform.Invert();
viewport1.Invalidate();
}
}
}
