//// Glut callbacks /////
void GlGlut::display() {
glClearColor(0, 0, 0, 1);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
glUseProgram(programObject);
float projection[4][4];
Matrix_Perpsective(60.0, 1.0, 0.1, 100, projection);
float modelview[4][4];
Matrix_LookAt(0, 0, 5, 0, 0, 0, 0, 1, 0, modelview);
float temp[4][4];
Matrix_Translate(0.0, -1.0, 0.0, temp);
Matrix_Multiplication(modelview, temp, modelview);
Matrix_Rotate(x_angle, 0, 1, 0, temp);
Matrix_Multiplication(modelview, temp, modelview);
Matrix_Rotate(y_angle, 1, 0, 0, temp);
Matrix_Multiplication(modelview, temp, modelview);
Matrix_Scale(scale_size, scale_size, scale_size, temp);
Matrix_Multiplication(modelview, temp, modelview);
// Normal matrix is transpose of inverse of modelview's upper left 3x3
float normal[3][3];
matrix_inverse_3x3(modelview, normal);
float modelview_projection[4][4];
Matrix_Multiplication(projection, modelview, modelview_projection);
GLuint m = glGetUniformLocation(programObject, "m_modelview");
GLuint p = glGetUniformLocation(programObject, "m_mvp");
GLuint n = glGetUniformLocation(programObject, "m_normal");
// Send with transpose=true to convert to opengl's column major
glUniformMatrix4fv(m, 1, GL_TRUE, &modelview[0][0]);
glUniformMatrix4fv(p, 1, GL_TRUE, &modelview_projection[0][0]);
glUniformMatrix3fv(n, 1, GL_TRUE, &normal[0][0]);
if (programObject == phong_point) {
float light_pos_loc[4] = {1.0, -1.0, 1.0, 1.0};
float (*light_pos)[4] = &light_pos_loc;
if (phong_fixed_point) {
// Multiply light's position by model view matrix to keep it
// fixed with respect to mesh object
float light_pos_mv[4];
matrix_multiply_point(modelview, light_pos_loc, light_pos_mv);
light_pos = &light_pos_mv;
}
GLuint l = glGetUniformLocation(programObject, "light_pos");
glUniform4fv(l, 1, *light_pos);
}
mesh->render(programObject);
glutSwapBuffers();
}
void CG_DrawTestBox( vec3_t origin, vec3_t mins, vec3_t maxs, vec3_t angles )
{
vec3_t start, end, vec;
float linewidth = 6;
vec3_t localAxis[3];
#if 1
vec3_t ax[3];
AnglesToAxis( angles, ax );
Matrix_Transpose( ax, localAxis );
#else
Matrix_Copy( axis_identity, localAxis );
if( angles[YAW] ) Matrix_Rotate( localAxis, -angles[YAW], 0, 0, 1 );
if( angles[PITCH] ) Matrix_Rotate( localAxis, -angles[PITCH], 0, 1, 0 );
if( angles[ROLL] ) Matrix_Rotate( localAxis, -angles[ROLL], 1, 0, 0 );
#endif
//horizontal projection
start[0] = mins[0];
start[1] = mins[1];
start[2] = mins[2];
end[0] = mins[0];
end[1] = mins[1];
end[2] = maxs[2];
// convert to local axis space
VectorCopy( start, vec );
Matrix_TransformVector( localAxis, vec, start );
VectorCopy( end, vec );
Matrix_TransformVector( localAxis, vec, end );
VectorAdd( origin, start, start );
VectorAdd( origin, end, end );
CG_QuickPolyBeam( start, end, linewidth, NULL );
start[0] = mins[0];
start[1] = maxs[1];
start[2] = mins[2];
end[0] = mins[0];
end[1] = maxs[1];
end[2] = maxs[2];
// convert to local axis space
VectorCopy( start, vec );
Matrix_TransformVector( localAxis, vec, start );
VectorCopy( end, vec );
Matrix_TransformVector( localAxis, vec, end );
VectorAdd( origin, start, start );
VectorAdd( origin, end, end );
CG_QuickPolyBeam( start, end, linewidth, NULL );
start[0] = maxs[0];
start[1] = mins[1];
start[2] = mins[2];
end[0] = maxs[0];
end[1] = mins[1];
end[2] = maxs[2];
// convert to local axis space
VectorCopy( start, vec );
Matrix_TransformVector( localAxis, vec, start );
VectorCopy( end, vec );
Matrix_TransformVector( localAxis, vec, end );
VectorAdd( origin, start, start );
VectorAdd( origin, end, end );
CG_QuickPolyBeam( start, end, linewidth, NULL );
start[0] = maxs[0];
start[1] = maxs[1];
start[2] = mins[2];
end[0] = maxs[0];
end[1] = maxs[1];
end[2] = maxs[2];
// convert to local axis space
VectorCopy( start, vec );
Matrix_TransformVector( localAxis, vec, start );
VectorCopy( end, vec );
Matrix_TransformVector( localAxis, vec, end );
VectorAdd( origin, start, start );
VectorAdd( origin, end, end );
CG_QuickPolyBeam( start, end, linewidth, NULL );
//x projection
start[0] = mins[0];
start[1] = mins[1];
start[2] = mins[2];
end[0] = maxs[0];
end[1] = mins[1];
end[2] = mins[2];
// convert to local axis space
VectorCopy( start, vec );
Matrix_TransformVector( localAxis, vec, start );
VectorCopy( end, vec );
Matrix_TransformVector( localAxis, vec, end );
VectorAdd( origin, start, start );
VectorAdd( origin, end, end );
CG_QuickPolyBeam( start, end, linewidth, NULL );
start[0] = mins[0];
start[1] = maxs[1];
start[2] = maxs[2];
end[0] = maxs[0];
end[1] = maxs[1];
end[2] = maxs[2];
// convert to local axis space
VectorCopy( start, vec );
Matrix_TransformVector( localAxis, vec, start );
VectorCopy( end, vec );
Matrix_TransformVector( localAxis, vec, end );
VectorAdd( origin, start, start );
VectorAdd( origin, end, end );
CG_QuickPolyBeam( start, end, linewidth, NULL );
start[0] = mins[0];
start[1] = maxs[1];
start[2] = mins[2];
end[0] = maxs[0];
end[1] = maxs[1];
end[2] = mins[2];
// convert to local axis space
VectorCopy( start, vec );
Matrix_TransformVector( localAxis, vec, start );
VectorCopy( end, vec );
Matrix_TransformVector( localAxis, vec, end );
VectorAdd( origin, start, start );
VectorAdd( origin, end, end );
CG_QuickPolyBeam( start, end, linewidth, NULL );
start[0] = mins[0];
start[1] = mins[1];
start[2] = maxs[2];
end[0] = maxs[0];
end[1] = mins[1];
end[2] = maxs[2];
// convert to local axis space
VectorCopy( start, vec );
Matrix_TransformVector( localAxis, vec, start );
VectorCopy( end, vec );
Matrix_TransformVector( localAxis, vec, end );
VectorAdd( origin, start, start );
VectorAdd( origin, end, end );
CG_QuickPolyBeam( start, end, linewidth, NULL );
//z projection
start[0] = mins[0];
start[1] = mins[1];
start[2] = mins[2];
end[0] = mins[0];
end[1] = maxs[1];
end[2] = mins[2];
// convert to local axis space
VectorCopy( start, vec );
Matrix_TransformVector( localAxis, vec, start );
VectorCopy( end, vec );
Matrix_TransformVector( localAxis, vec, end );
VectorAdd( origin, start, start );
VectorAdd( origin, end, end );
CG_QuickPolyBeam( start, end, linewidth, NULL );
start[0] = maxs[0];
start[1] = mins[1];
start[2] = maxs[2];
end[0] = maxs[0];
end[1] = maxs[1];
end[2] = maxs[2];
// convert to local axis space
VectorCopy( start, vec );
Matrix_TransformVector( localAxis, vec, start );
VectorCopy( end, vec );
Matrix_TransformVector( localAxis, vec, end );
VectorAdd( origin, start, start );
VectorAdd( origin, end, end );
CG_QuickPolyBeam( start, end, linewidth, NULL );
start[0] = maxs[0];
start[1] = mins[1];
start[2] = mins[2];
end[0] = maxs[0];
end[1] = maxs[1];
end[2] = mins[2];
// convert to local axis space
VectorCopy( start, vec );
Matrix_TransformVector( localAxis, vec, start );
VectorCopy( end, vec );
Matrix_TransformVector( localAxis, vec, end );
VectorAdd( origin, start, start );
VectorAdd( origin, end, end );
CG_QuickPolyBeam( start, end, linewidth, NULL );
start[0] = mins[0];
start[1] = mins[1];
start[2] = maxs[2];
end[0] = mins[0];
end[1] = maxs[1];
end[2] = maxs[2];
// convert to local axis space
VectorCopy( start, vec );
Matrix_TransformVector( localAxis, vec, start );
VectorCopy( end, vec );
Matrix_TransformVector( localAxis, vec, end );
VectorAdd( origin, start, start );
VectorAdd( origin, end, end );
CG_QuickPolyBeam( start, end, linewidth, NULL );
}
