private void glControl_Paint(object sender, PaintEventArgs e)
{
Gl.glClear(Gl.GL_COLOR_BUFFER_BIT | Gl.GL_DEPTH_BUFFER_BIT);
Gl.glLoadIdentity();
// Setup wireframe or solid fill drawing mode
if (Wireframe)
{
Gl.glPolygonMode(Gl.GL_FRONT_AND_BACK, Gl.GL_LINE);
}
else
{
Gl.glPolygonMode(Gl.GL_FRONT, Gl.GL_FILL);
}
Vector3 center = Vector3.Zero;
Glu.gluLookAt(
center.X, (double)scrollZoom.Value * 0.1d + center.Y, center.Z,
center.X, center.Y, center.Z,
0d, 0d, 1d);
// Push the world matrix
Gl.glPushMatrix();
Gl.glEnableClientState(Gl.GL_VERTEX_ARRAY);
Gl.glEnableClientState(Gl.GL_TEXTURE_COORD_ARRAY);
// World rotations
Gl.glRotatef((float)scrollRoll.Value, 1f, 0f, 0f);
Gl.glRotatef((float)scrollPitch.Value, 0f, 1f, 0f);
Gl.glRotatef((float)scrollYaw.Value, 0f, 0f, 1f);
if (Prims != null)
{
for (int i = 0; i < Prims.Count; i++)
{
Primitive prim = Prims[i].Prim;
if (i == cboPrim.SelectedIndex)
{
Gl.glColor3f(1f, 0f, 0f);
}
else
{
Gl.glColor3f(1f, 1f, 1f);
}
// Individual prim matrix
Gl.glPushMatrix();
// The root prim position is sim-relative, while child prim positions are
// parent-relative. We want to apply parent-relative translations but not
// sim-relative ones
if (Prims[i].Prim.ParentID != 0)
{
// Apply prim translation and rotation
Gl.glMultMatrixf(Math3D.CreateTranslationMatrix(prim.Position));
Gl.glMultMatrixf(Math3D.CreateRotationMatrix(prim.Rotation));
}
// Prim scaling
Gl.glScalef(prim.Scale.X, prim.Scale.Y, prim.Scale.Z);
// Draw the prim faces
for (int j = 0; j < Prims[i].Faces.Count; j++)
{
if (i == cboPrim.SelectedIndex)
{
// This prim is currently selected in the dropdown
//Gl.glColor3f(0f, 1f, 0f);
Gl.glColor3f(1f, 1f, 1f);
if (j == cboFace.SelectedIndex)
{
// This face is currently selected in the dropdown
}
else
{
// This face is not currently selected in the dropdown
}
}
else
{
// This prim is not currently selected in the dropdown
Gl.glColor3f(1f, 1f, 1f);
}
#region Texturing
Face face = Prims[i].Faces[j];
FaceData data = (FaceData)face.UserData;
if (data.TexturePointer != 0)
{
// Set the color to solid white so the texture is not altered
//Gl.glColor3f(1f, 1f, 1f);
// Enable texturing for this face
Gl.glEnable(Gl.GL_TEXTURE_2D);
}
else
{
Gl.glDisable(Gl.GL_TEXTURE_2D);
}
// Bind the texture
Gl.glBindTexture(Gl.GL_TEXTURE_2D, data.TexturePointer);
#endregion Texturing
Gl.glTexCoordPointer(2, Gl.GL_FLOAT, 0, data.TexCoords);
Gl.glVertexPointer(3, Gl.GL_FLOAT, 0, data.Vertices);
Gl.glDrawElements(Gl.GL_TRIANGLES, data.Indices.Length, Gl.GL_UNSIGNED_SHORT, data.Indices);
}
// Pop the prim matrix
Gl.glPopMatrix();
}
}
// Pop the world matrix
Gl.glPopMatrix();
Gl.glDisableClientState(Gl.GL_TEXTURE_COORD_ARRAY);
Gl.glDisableClientState(Gl.GL_VERTEX_ARRAY);
Gl.glFlush();
}
