/// <summary>
/// refreshes the back ground for <see cref="ForeGroundDraw"/>.
/// </summary>
public void RefreshBackGround()
{
Texture Savet = texture;
GLShader S = Shader;
BackBuffer.BackGround = BackColor;
if (BackBuffer.FboHandle <= 0)
{
BackBuffer.Init((int)ViewPort.Width, (int)ViewPort.Height);
}
RenderKind K = RenderKind;
RenderKind = RenderKind.Render;
Matrix P = ProjectionMatrix;
ProjectionMatrix = Matrix.scale(new xyz(1, -1, 1)) * P;
//--------- Draw scene to Backbuffer
BackBuffer.EnableWriting();
OnPaint();
BackBuffer.DisableWriting();
texture = Savet;
ProjectionMatrix = P;
RenderKind = K;
Shader = S;
}
private void OnLoadControl(object sender, EventArgs e)
{
memGraphics.Init(this.CreateGraphics(), this.ClientRectangle.Width, this.ClientRectangle.Height);
}
/// <summary>
/// is called when the <see cref="WinControl"/> has changed his size.
/// </summary>
/// <param name="width">the new width of the Wincontrol</param>
/// <param name="height">the new height of the Wincontrol</param>
protected virtual void OnViewPortChanged(int width, int height)
{
//if (FirstViewPortChanged)
//{ FirstViewPortChanged = false;
// OnCreated();
// if (this._RenderMode == Mode.Allways)
// SetTimer();
//}
// return;
//CheckError();
if ((width == 0) || (height == 0))
{
return;
}
MakeCurrent();
Matrix old = EyeMatrix(new Size((int)ViewPort.Width, (int)ViewPort.Height), FieldOfView).invert();
double Fa = ViewPort.Width / (float)width;
double Fb = ViewPort.Height / (float)height;
ViewPort = new Rectangle(0, 0, width, height);
ShadowFBO.InitForDepth(ShadowSetting.Width, ShadowSetting.Height);
CheckError();
Matrix New = EyeMatrix(new Size(width, height), FieldOfView);
Matrix M = ((Matrix.LookAt(Camera.Position, Camera.Position + Camera.Direction, Camera.UpVector)));//* Matrix.Scale(PerspektiveFactor, PerspektiveFactor, PerspektiveFactor));
if (FieldOfView == 0)
{
Fa = 1; Fb = 1;
}
ProjectionMatrix = Matrix.Scale(Fa, Fb, 1) * ProjectionMatrix * M.invert() * old * New * M;
Camera.MakeConsistent();
if (FirstViewPortChanged)
{
Camera.setDefZoom();
FirstViewPortChanged = false;
Shader = SmallShader;
OnCreated();
SizeChanged();
if (this._RenderMode == Mode.Allways)
{
SetTimer();
}
}
try
{
if (ForegroundDrawEnable)
{
BackBuffer.Init(width, height);
RefreshBackGround();
CopyFromBackGround();
}
}
catch (System.Exception)
{
_ForegroundDrawEnable = false;
}
CheckError();
}