private void Render(object sender, PaintEventArgs e)
{
if (!loaded)
{
return;
}
MakeCurrent();
SetupViewport();
//double size = Scene.Size();
double size = Scene.Max.Y - Scene.Min.Y;
double SceneYOffset = -size / 2f;
double defaultzoom = (double)Math.Sqrt(Math.Pow(TableRadius, 2) + Math.Pow(TableHeight, 2));
GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
GL.LoadIdentity();
var aspect_ratio = Width / (double)Height;
var projection = Matrix4d.CreatePerspectiveFieldOfView(
MathHelper.PiOver4, double.Parse(aspect_ratio.ToString()), 1f, 1024);
// var modelview = Matrix4d.LookAt(0, size / 2 , - DragZoom * defaultzoom * 2f,
// 0,TableHeight/2, 0, 0, size, 0);
var viewHeight = (TableHeight / 2.50) + SceneYOffset;
var modelview = Matrix4d.LookAt(0, viewHeight, Math.Max(0.00000001f, -(-Drag.Zoom * defaultzoom * 1.5f)),
0, viewHeight, 0, 0, size, 0);
GL.MatrixMode(MatrixMode.Projection);
if (Projection)
{
GL.LoadMatrix(ref projection);
}
else
{
GL.LoadIdentity();
double x = Math.Max(TableRadius * 2, TableHeight) * Drag.Zoom / 2.0;
double y = x * ((double)Height / (double)Width);
GL.Ortho(-x, x, -y, y, 0.0, 10000.0);
}
GL.MatrixMode(MatrixMode.Modelview);
GL.LoadMatrix(ref modelview);
#region LIGHT
//if (Lightning)
{
float[] lightPos = new float[] { (float)(-TableRadius * 2f), (float)TableRadius * 2f, (float)TableHeight * 2f, 1.0f };
GL.PointSize(5);
GL.Disable(EnableCap.Lighting);
GL.Begin(PrimitiveType.Points);
GL.Color3(Color.Yellow);
GL.Vertex3(lightPos);
GL.End();
GL.PointSize(1);
float[] light_ambient = { 0.2f, 0.2f, 0.2f, 1.0f };
float[] light_diffuse = { 1.0f, 1.0f, 1.0f, 1.0f };
float[] light_specular = { 1.0f, 1.0f, 1.0f, 1.0f };
float[] spotdirection = { 0.5f, -1.0f, -1.0f };
GL.Light(LightName.Light0, LightParameter.Ambient, light_ambient);
GL.Light(LightName.Light0, LightParameter.Diffuse, light_diffuse);
GL.Light(LightName.Light0, LightParameter.Specular, light_specular);
GL.Enable(EnableCap.Lighting);
GL.Light(LightName.Light0, LightParameter.Position, lightPos);
GL.Enable(EnableCap.Light0);
//GL.Light(LightName.Light0, LightParameter.SpotDirection, spotdirection);
//GL.Light(LightName.Light0, LightParameter.SpotCutoff, 20);
}
#endregion
GL.Translate(Drag.Pane.X, -Drag.Pane.Y, 0);
Matrix4d m = MatrixFromYawPitchRoll(-Math.PI * Drag.Angle.X / 360.0f, -Math.PI * Drag.Angle.Y / 360.0f, 0);
GL.MultMatrix(ref m);
// Model space
#region Box/Axis
GL.Disable(EnableCap.Lighting);
Vector3d scannerCenter = new Vector3d(0, -size / 2f, 0);
Axis(new Vector3d(scannerCenter.X - TableRadius, scannerCenter.Y, scannerCenter.Z + TableRadius), 10);
#endregion ;
GL.Translate(0, SceneYOffset, 0);
if (BoundingBox)
{
DrawBoundingBox(Color.Red, Scene.Min, Scene.Max);
}
if (Lightning)
{
GL.Enable(EnableCap.Lighting);
GL.ColorMaterial(MaterialFace.FrontAndBack, ColorMaterialParameter.AmbientAndDiffuse);
GL.Enable(EnableCap.ColorMaterial);
}
GL.PointSize(2);
GL.LineWidth(2);
RenderingContext context = RenderingContext.From(ViewerConfig);
context.ApplyFaceDefault();
GL.ShadeModel(Smooth ? ShadingModel.Smooth : ShadingModel.Flat);
GL.Enable(EnableCap.CullFace);
GL.CullFace(CullFaceMode.Back);
Scene.Render(ref context);
GL.Translate(0, -SceneYOffset, 0);
DrawScannerTable(scannerCenter);
SwapBuffers();
using (Graphics g = Graphics.FromHwnd(this.Handle))
{
using (SolidBrush bg = new SolidBrush(this.BackColor))
{
using (SolidBrush bf = new SolidBrush(this.ForeColor))
{
string text = String.Format("{0} points", Scene.GetNumVertices().ToString("N0"));
SizeF s = g.MeasureString(text, this.Font);
RectangleF rect = new RectangleF(0, 0, s.Width, s.Height);
rect.Y = this.Height - s.Height;
g.FillRectangle(bg, rect);
g.DrawString(text, this.Font, bf, rect.Location);
}
}
}
// this.Label.Text = String.Format("{0} points", Scene.GetNumVertices());
}
