public override void BeginOpenGLMainDisplay(SolidEdgeSDK.IGL gl)
{
if (gl == null) return;
DrawBoundingBox(gl);
if (_showOpenGlBoxes)
{
float fSize = 0.025f;
double[] matrix0 = { 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1 };
double[] matrix1 = { 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, fSize, 1 };
double[] matrix2 = { 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, fSize, -fSize, 1 };
double[] matrix3 = { 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, fSize, -fSize, 0, 1 };
gl.glMatrixMode(SharpGL.OpenGL.GL_MODELVIEW);
int mode = 0;
int depth = 0;
uint error;
error = gl.glGetError();
gl.glGetIntegerv(SharpGL.OpenGL.GL_MATRIX_MODE, ref mode);
gl.glGetIntegerv(SharpGL.OpenGL.GL_MODELVIEW_STACK_DEPTH, ref depth);
gl.glPushMatrix();
gl.glGetIntegerv(SharpGL.OpenGL.GL_MODELVIEW_STACK_DEPTH, ref depth);
gl.glLoadMatrixd(matrix0);
gl.glColor3f(1, 0, 0);
DrawCube(gl, fSize / 2.0f);
gl.glPopMatrix();
gl.glPushMatrix();
{
gl.glMultMatrixd(matrix1);
gl.glColor3f(0, 1, 0);
DrawCube(gl, fSize / 2.0f);
}
{
gl.glMultMatrixd(matrix2);
gl.glColor3f(0, 0, 1);
DrawCube(gl, fSize / 2.0f);
}
{
gl.glMultMatrixd(matrix3);
gl.glColor4f(1, 1, 0, .25f);
DrawCube(gl, fSize / 2.0f);
}
gl.glPopMatrix();
}
}
private void DrawCube(SolidEdgeSDK.IGL gl, float fSize)
{
float[][] p0 = new float[][]
{
new float[] { 0.0f, 0.0f, 0.0f },
new float[] { 0.0f, fSize, 0.0f },
new float[] { fSize, 0.0f, 0.0f },
new float[] { fSize, fSize, 0.0f }
};
float[][] p1 = new float[][]
{
new float[] { 0.0f, 0.0f, fSize },
new float[] { 0.0f, fSize, fSize },
new float[] { fSize, 0.0f, fSize },
new float[] { fSize, fSize, fSize }
};
float[][] p2 = new float[][]
{
new float[] { 0.0f, 0.0f, 0.0f },
new float[] { 0.0f, 0.0f, fSize },
new float[] { 0.0f, fSize, 0.0f },
new float[] { 0.0f, fSize, fSize }
};
float[][] p3 = new float[][]
{
new float[] { fSize, 0.0f, 0.0f },
new float[] { fSize, 0.0f, fSize },
new float[] { fSize, fSize, 0.0f },
new float[] { fSize, fSize, fSize }
};
float[][] p4 = new float[][]
{
new float[] { 0.0f, 0.0f, 0.0f },
new float[] { 0.0f, 0.0f, fSize },
new float[] { fSize, 0.0f, 0.0f },
new float[] { fSize, 0.0f, fSize }
};
float[][] p5 = new float[][]
{
new float[] { 0.0f, fSize, 0.0f },
new float[] { 0.0f, fSize, fSize },
new float[] { fSize, fSize, 0.0f },
new float[] { fSize, fSize, fSize }
};
// Normals
float[][] n0 = new float[][]
{
new float[] { 0.0f, 0.0f, -1.0f },
new float[] { 0.0f, 0.0f, 1.0f},
new float[] { 0.0f, -1.0f, 0.0f},
new float[] { 0.0f, 1.0f, 0.0f},
new float[] { 0.0f, 0.0f, 1.0f},
new float[] { 0.0f, 1.0f, 0.0f},
new float[] { 0.0f, -1.0f, 0.0f }
};
{
gl.glBegin(SharpGL.OpenGL.GL_TRIANGLES);
gl.glNormal3fv(n0[0]);
gl.glEdgeFlag((byte)SharpGL.OpenGL.GL_TRUE);
gl.glVertex3fv(p0[0]);
gl.glEdgeFlag(0);
gl.glVertex3fv(p0[1]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p0[2]);
gl.glNormal3fv(n0[1]);
gl.glEdgeFlag(0);
gl.glVertex3fv(p0[1]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p0[2]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p0[3]);
gl.glEnd();
}
{
gl.glBegin(SharpGL.OpenGL.GL_TRIANGLE_STRIP);
gl.glNormal3fv(n0[2]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p1[0]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p1[1]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p1[2]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p1[3]);
gl.glEnd();
}
{
gl.glBegin(SharpGL.OpenGL.GL_TRIANGLE_STRIP);
gl.glNormal3fv(n0[3]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p2[0]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p2[1]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p2[2]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p2[3]);
gl.glEnd();
}
{
gl.glBegin(SharpGL.OpenGL.GL_TRIANGLE_STRIP);
gl.glNormal3fv(n0[4]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p3[0]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p3[1]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p3[2]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p3[3]);
gl.glEnd();
}
{
gl.glBegin(SharpGL.OpenGL.GL_TRIANGLE_STRIP);
gl.glNormal3fv(n0[5]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p4[0]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p4[1]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p4[2]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p4[3]);
gl.glEnd();
}
{
gl.glBegin(SharpGL.OpenGL.GL_TRIANGLE_STRIP);
gl.glNormal3fv(n0[6]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p5[0]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p5[1]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p5[2]);
gl.glEdgeFlag(1);
gl.glVertex3fv(p5[3]);
gl.glEnd();
}
}
private void DrawBoundingBox(SolidEdgeSDK.IGL gl)
{
if (_boundingBoxInfo.Visible == false) return;
if (gl == null) return;
Vector3d min = new Vector3d();
Vector3d max = new Vector3d();
this.View.GetModelRange(out min.X, out min.Y, out min.Z, out max.X, out max.Y, out max.Z);
gl.glColor3i(_boundingBoxInfo.LineColor.R, _boundingBoxInfo.LineColor.G, _boundingBoxInfo.LineColor.B);
gl.glLineWidth(_boundingBoxInfo.LineWidth);
gl.glHint(SharpGL.OpenGL.GL_LINE_SMOOTH_HINT, SharpGL.OpenGL.GL_NICEST);
{
gl.glBegin(SharpGL.OpenGL.GL_LINE_LOOP);
gl.glVertex3d(min.X, min.Y, max.Z);
gl.glVertex3d(max.X, min.Y, max.Z);
gl.glVertex3d(max.X, max.Y, max.Z);
gl.glVertex3d(min.X, max.Y, max.Z);
gl.glEnd();
}
{
gl.glBegin(SharpGL.OpenGL.GL_LINE_LOOP);
gl.glVertex3d(min.X, min.Y, min.Z);
gl.glVertex3d(max.X, min.Y, min.Z);
gl.glVertex3d(max.X, max.Y, min.Z);
gl.glVertex3d(min.X, max.Y, min.Z);
gl.glEnd();
}
{
gl.glBegin(SharpGL.OpenGL.GL_LINES);
gl.glVertex3d(min.X, min.Y, min.Z);
gl.glVertex3d(min.X, min.Y, max.Z);
gl.glVertex3d(max.X, max.Y, min.Z);
gl.glVertex3d(max.X, max.Y, max.Z);
gl.glVertex3d(min.X, max.Y, min.Z);
gl.glVertex3d(min.X, max.Y, max.Z);
gl.glVertex3d(max.X, min.Y, min.Z);
gl.glVertex3d(max.X, min.Y, max.Z);
gl.glEnd();
}
{
gl.glColor3f(1, 0, 0);
gl.glBegin(SharpGL.OpenGL.GL_LINES);
// Diagonal line between min & max points.
gl.glVertex3d(min.X, min.Y, min.Z);
gl.glVertex3d(max.X, max.Y, max.Z);
gl.glEnd();
}
}