private void DrawCanvas2d(float opacity)
{
if (this.Canvas == null || !this.showBackground)
{
return;
}
GL.Disable(EnableCap.DepthTest);
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
int w = this.Canvas.Width, h = this.Canvas.Height;
GL.PushMatrix();
GL.Viewport(0, this.view.Height - h, w, h);
GL.MatrixMode(MatrixMode.Projection);
GL.LoadIdentity();
GL.Ortho(0, w, h, 0, -1, 1);
GL.MatrixMode(MatrixMode.Modelview);
GL.PushMatrix();
// translation and scaling
GL.Translate(this.GlTrans.x, this.GlTrans.y, 0.0);
GL.Scale(this.glScale, this.glScale, 1);
// draw canvas
GLBasicDraw.DrawTexture(w, h, this.CanvasTextureId, opacity);
GL.PopMatrix();
GL.PopMatrix();
GL.Disable(EnableCap.Blend);
}
public void Init()
{
BrushSize = 16; // brush size
this.prevMousePosition = new MyVector2(); // prev mouse pos
this.mouseDownPosition = new MyVector2(); // mouse down pos
this.currMousePosition = new MyVector2(); // curr mouse pos
// initialize textures, airbrushes, and parameters
this.LoadTextures(); // load canvas, brush textures
// 3d entities
//this.eyePos = new MyVector3(0, 0.1, 1); // eye (camera) position
this.eyePos = new MyVector3(0, 0, -0.5); // eye (camera) position
this.lightPosition = new MyVector3(5, 5, 5); // light position
// util
Utils.InitialRandomColors(53); // initial random colors
// opengl
GLBasicDraw.InitGlMaterialLights();
// mode
//this.currentMode = EnumOperationMode.Adjusting;
this.currentMode = EnumOperationMode.Viewing;
// opengl projector
this.glProjector = new OpenGLProjector();
}
private void DrawLight()
{
for (int i = 0; i < GLBasicDraw.lightPositions.Count; ++i)
{
MyVector3 pos3 = new MyVector3(GLBasicDraw.lightPositions[i][0],
GLBasicDraw.lightPositions[i][1],
GLBasicDraw.lightPositions[i][2]);
MyVector3 pos2 = this.camera.Project(pos3.x, pos3.y, pos3.z);
GLBasicDraw.DrawCircle(new MyVector2(pos2.x, pos2.y), Color.Yellow, 0.2f);
}
}
private void DrawScene3d()
{
if (this.camera.Calibrated == false)
{
return;
}
GLBasicDraw.InitGlMaterialLights(); // lights and materials
int w = this.Canvas.Width, h = this.Canvas.Height;
GL.Viewport(0, this.view.Height - h, w, h);
// -------------------------------------------------------------------------
// draw 3d sense
MyMatrix4d m = this.arcBall.GetMatrix() * this.modelTransformation;
m = MyMatrix4d.TranslationMatrix(this.currTransCenter) * m * MyMatrix4d.TranslationMatrix(
new MyVector3() - this.currTransCenter);
GL.PushMatrix();
GL.MatrixMode(MatrixMode.Projection);
GL.LoadIdentity();
GL.LoadMatrix(this.camera.glprojMatrix);
GL.MatrixMode(MatrixMode.Modelview);
GL.LoadIdentity();
GL.LoadMatrix(this.camera.glmodelViewMatrix);
GL.PushMatrix();
GL.MultMatrix(m.Transpose().ToArray());
// Enable antialiased lines
GL.Enable(EnableCap.PointSmooth);
GL.Enable(EnableCap.LineSmooth);
GL.Enable(EnableCap.Blend);
GL.BlendFunc(BlendingFactorSrc.SrcAlpha, BlendingFactorDest.OneMinusSrcAlpha);
// draw all geometric faces (depth test enabled, blend disabled)
if (!this.DrawTransparent)
{
GL.Enable(EnableCap.DepthTest);
GL.Disable(EnableCap.Blend);
GL.DepthFunc(DepthFunction.Less);
GL.DepthMask(true);
}
if (!this.DrawTransparent)
{
GL.DepthFunc(DepthFunction.Lequal);
GL.DepthMask(false); // Do not remove me, else get dotted lines
}
GL.Enable(EnableCap.Blend);
/* --------------------------------------------------------------------------*/
// draw the lines on top
// painting goes here!
/* --------------------------------------------------------------------------*/
//DrawAxis();
// draw highlights
this.DrawHighlights3D();
GL.Disable(EnableCap.LineSmooth);
GL.Disable(EnableCap.PointSmooth);
GL.Disable(EnableCap.Blend);
GL.DepthMask(true);
GL.PopMatrix();
GL.PopMatrix();
}