public void Render()
{
DateTime startTime = HighPrecisionTimer.Now;
while(data.Size < fractal.View.BoundingBoxSize * 2) {
data.ExtendRoot();
}
Matrix rotation = new Matrix();
rotation.Rotate((float)fractal.View.CurrentAngle);
graphics.CompositingQuality = CompositingQuality.HighSpeed;
graphics.InterpolationMode = InterpolationMode.Bilinear;
graphics.SmoothingMode = SmoothingMode.HighSpeed;
graphics.ResetTransform();
graphics.MultiplyTransform(rotation, MatrixOrder.Append);
// From [-1,1] to [0,w]
graphics.TranslateTransform(1, 1, MatrixOrder.Append);
graphics.ScaleTransform(renderRectangle.Width / 2, renderRectangle.Height / 2, MatrixOrder.Append);
RectangleD renderArea = new RectangleD((-fractal.View.Xpos + -data.Size / 2) * fractal.View.Xzoom,
(-fractal.View.Ypos + -data.Size / 2) * fractal.View.Xzoom,
fractal.View.Xzoom * data.Size,
fractal.View.Xzoom * data.Size);
pixelSize = Math.Min(2d / renderRectangle.Width, 2d / renderRectangle.Height);
RenderOperation root = new RenderOperation(null, data.Root, data.Area, renderArea, rotation);
renderSet = new RenderSet(root, (int)numberOfFragmentsToRender);
Render(renderSet.RenderOperations);
numberOfFragmentsRendered = renderSet.Count;
actualRenderTime = HighPrecisionTimer.Now - startTime;
double timeFraction = (double)actualRenderTime.Ticks / (double)targetRenderTime.Ticks;
double optimalCount = (double)numberOfFragmentsToRender / timeFraction;
numberOfFragmentsToRender = numberOfFragmentsToRender * (1 - convergance) + optimalCount * convergance;
numberOfFragmentsToRender = Math.Max(16d, numberOfFragmentsToRender);
}
protected virtual void Draw(Texture tex, RectangleF src, RectangleD dest)
{
graphics.DrawImage(tex.Bitmap,
new PointF[] {dest.LeftTopCornerF,
dest.RightTopCornerF,
dest.LeftBottomCornerF},
src,
GraphicsUnit.Pixel);
}
protected override void Draw(Texture tex, RectangleF src, RectangleD dest)
{
base.Draw(tex, src, dest);
Gl.glMatrixMode(Gl.GL_MODELVIEW);
Gl.glLoadIdentity();
Gl.glRotated(Fractal.View.CurrentAngle, 0, 0, 1);
Gl.glBindTexture(Gl.GL_TEXTURE_2D, tex.TextureName);
Gl.glBegin(Gl.GL_QUADS);
{
int texSize = BitmapCache.BitmapSize;
Gl.glTexCoord2f(src.Left / texSize, src.Top / texSize);
Gl.glVertex2d(dest.X, dest.Y);
Gl.glTexCoord2f((src.Left) / texSize, (src.Top + src.Height) / texSize);
Gl.glVertex2d(dest.X + dest.Width, dest.Y);
Gl.glTexCoord2f((src.Left + src.Width) / texSize, (src.Top + src.Height) / texSize);
Gl.glVertex2d(dest.X + dest.Width, dest.Y + dest.Height);
Gl.glTexCoord2f((src.Left + src.Width) / texSize, src.Top / texSize);
Gl.glVertex2d(dest.X, dest.Y + dest.Height);
}
Gl.glEnd();
Gl.glFlush();
}
