void SimpleDraw::DrawSquares( const StdVector<StdVector<Vec3d > >& squares, bool isOpaque, float r, float g, float b, float a )
{
glDisable(GL_LIGHTING);
if(isOpaque)
{
// Draw the filled square
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset( 0.5, 0.5 );
glColor4f(r * 0.75f, g * 0.75f, b * 0.75f, RANGED(0, a, 1.0f));
if(a < 1.0f){
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
glBegin(GL_QUADS);
for(int i = 0; i < (int)squares.size(); i++)
{
glVertex3dv(squares[i][0]);
glVertex3dv(squares[i][1]);
glVertex3dv(squares[i][2]);
glVertex3dv(squares[i][3]);
}
glEnd();
glDisable(GL_POLYGON_OFFSET_FILL);
}
// Draw the edges
glLineWidth(1.0f);
glColor3f(r, g, b);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glBegin(GL_QUADS);
for(int i = 0; i < (int)squares.size(); i++)
{
glVertex3dv(squares[i][0]);
glVertex3dv(squares[i][1]);
glVertex3dv(squares[i][2]);
glVertex3dv(squares[i][3]);
}
glEnd();
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glEnable(GL_LIGHTING);
}
void SimpleDraw::DrawSquare(const Vec3d & v1, const Vec3d & v2, const Vec3d & v3, const Vec3d & v4,
bool isOpaque, float lineWidth, float r, float g, float b, float a)
{
glEnable(GL_LIGHTING);
if(isOpaque)
{
// Draw the filled square
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset( 0.5f, 0.5f );
glColor4f(r, g, b, RANGED(0, a, 1.0f));
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBegin(GL_QUADS);
Vec3d v21 = v2 - v1;
Vec3d v31 = v3 - v1;
glNormal3dv(cross(v21 , v31).normalized());
glVertex3dv(v1);
glVertex3dv(v2);
glVertex3dv(v3);
glVertex3dv(v4);
glEnd();
glDisable(GL_POLYGON_OFFSET_FILL);
}
glDisable(GL_LIGHTING);
// Draw the edges
glLineWidth(lineWidth);
glColor4f(r, g, b, a);
glBegin(GL_LINE_STRIP);
glVertex3dv(v1);
glVertex3dv(v2);
glVertex3dv(v3);
glVertex3dv(v4);
glVertex3dv(v1);
glEnd();
glEnable(GL_LIGHTING);
}
void SimpleDraw::DrawSquare(const Vec& v1, const Vec& v2, const Vec& v3, const Vec& v4,
bool isOpaque, float r, float g, float b, float a)
{
glDisable(GL_LIGHTING);
if(isOpaque)
{
// Draw the filled square
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset( 0.5, 0.5 );
glColor4f(r * 0.75f, g * 0.75f, b * 0.75f, RANGED(0, a, 1.0f));
if(a < 1.0f){
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
glBegin(GL_QUADS);
glVertex3fv(v1);
glVertex3fv(v2);
glVertex3fv(v3);
glVertex3fv(v4);
glEnd();
glDisable(GL_POLYGON_OFFSET_FILL);
}
// Draw the edges
glLineWidth(1.0f);
glColor3f(r, g, b);
glBegin(GL_LINE_STRIP);
glVertex3fv(v1);
glVertex3fv(v2);
glVertex3fv(v3);
glVertex3fv(v4);
glVertex3fv(v1);
glEnd();
glEnable(GL_LIGHTING);
}
void SimpleDraw::DrawTriangle(const Vec3d & v1, const Vec3d & v2, const Vec3d & v3, float r, float g, float b, float a, bool isOpaque)
{
glDisable(GL_LIGHTING);
if(a < 1.0f)
{
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
// Draw the filled triangle
if(isOpaque)
{
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset( 0.5, 0.5 );
glColor4f(r * 0.75f, g * 0.75f, b * 0.75f, RANGED(0,a,1.0f));
if(a < 1.0f){
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
glBegin(GL_TRIANGLES);
glVertex3dv(v1);
glVertex3dv(v2);
glVertex3dv(v3);
glEnd();
glDisable(GL_POLYGON_OFFSET_FILL);
}
// Draw the edges
glLineWidth(1.0f);
glColor3f(r * 0.5f, g * 0.5f, b * 0.5f);
glBegin(GL_LINE_STRIP);
glVertex3dv(v1);
glVertex3dv(v2);
glVertex3dv(v3);
glVertex3dv(v1);
glEnd();
// Draw the points
int pointSize = 4;
glEnable(GL_POINT_SMOOTH);
// Colored dot
glColor3f(r,g,b);
glPointSize(pointSize);
glBegin(GL_POINTS);
glVertex3dv(v1);
glVertex3dv(v2);
glVertex3dv(v3);
glEnd();
// White Border
glPointSize(pointSize + 2);
glColor3f(1, 1, 1);
glBegin(GL_POINTS);
glVertex3dv(v1);
glVertex3dv(v2);
glVertex3dv(v3);
glEnd();
glDisable (GL_BLEND);
glEnable(GL_LIGHTING);
}
void SimpleDraw::DrawTriangles( const StdVector< StdVector<Vec3d> > & tris, float r, float g, float b, float a, bool isOpaque, bool isDrawVec3ds)
{
glDisable(GL_LIGHTING);
if(a < 1.0f)
{
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
// Draw the filled triangle
if(isOpaque)
{
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glEnable(GL_POLYGON_OFFSET_FILL);
glPolygonOffset( 0.5, 0.5 );
glColor4f(r * 0.75f, g * 0.75f, b * 0.75f, RANGED(0,a,1.0f));
if(a < 1.0f){
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
glBegin(GL_TRIANGLES);
for(int i = 0; i < (int)tris.size(); i++)
{
glVertex3dv(tris[i][0]);
glVertex3dv(tris[i][1]);
glVertex3dv(tris[i][2]);
}
glEnd();
glDisable(GL_POLYGON_OFFSET_FILL);
}
// Draw the edges
glLineWidth(1.0f);
if(isOpaque)
glColor3f(r * 0.5f, g * 0.5f, b * 0.5f);
else
glColor3f(r, g, b);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
glBegin(GL_TRIANGLES);
for(int i = 0; i < (int)tris.size(); i++)
{
glVertex3dv(tris[i][0]);
glVertex3dv(tris[i][1]);
glVertex3dv(tris[i][2]);
}
glEnd();
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
if(isDrawVec3ds)
{
// Draw the points
int pointSize = 4;
glEnable(GL_POINT_SMOOTH);
// Colored dot
glColor3f(r,g,b);
glPointSize(pointSize);
glBegin(GL_POINTS);
for(int i = 0; i < (int)tris.size(); i++)
{
glVertex3dv(tris[i][0]);
glVertex3dv(tris[i][1]);
glVertex3dv(tris[i][2]);
}
glEnd();
// White Border
glPointSize(pointSize + 2);
glColor3f(1, 1, 1);
glBegin(GL_POINTS);
for(int i = 0; i < (int)tris.size(); i++)
{
glVertex3dv(tris[i][0]);
glVertex3dv(tris[i][1]);
glVertex3dv(tris[i][2]);
}
glEnd();
}
glDisable (GL_BLEND);
glEnable(GL_LIGHTING);
}
