QT C++ graphics display WIDGET

    def highlight(self, lineno, geometry):
        glLineWidth(3)
        c = self.colors['selected']
        glColor3f(*c)
        glBegin(GL_LINES)
        coords =
        for line in self.traverse:
            if line[0] != lineno: continue
            linuxcnc.line9(geometry, line[1], line[2])
            coords.append(line[1][:3])
            coords.append(line[2][:3])
        for line in self.arcfeed:
            if line[0] != lineno: continue
            linuxcnc.line9(geometry, line[1], line[2])
            coords.append(line[1][:3])
            coords.append(line[2][:3])
        for line in self.feed:
            if line[0] != lineno: continue
            linuxcnc.line9(geometry, line[1], line[2])
            coords.append(line[1][:3])
            coords.append(line[2][:3])
        glEnd()
        for line in self.dwells:
            if line[0] != lineno: continue
            self.draw_dwells([(line[0], c) + line[2:]], 2, 0)
            coords.append(line[2:5])
        glLineWidth(1)
        if coords:
            x = reduce(lambda x,y:x+y, [c[0] for c in coords]) / len(coords)
            y = reduce(lambda x,y:x+y, [c[1] for c in coords]) / len(coords)
            z = reduce(lambda x,y:x+y, [c[2] for c in coords]) / len(coords)
        else:
            x = (self.min_extents[0] + self.max_extents[0])/2
            y = (self.min_extents[1] + self.max_extents[1])/2
            z = (self.min_extents[2] + self.max_extents[2])/2
        return x, y, z



In the python module,  emcmodule.cc
is what processes the commands to make openGL commands for glcanon.
PositionLogger must track the current position while running a program?


The overlay looks great.
Stretch goals would be ability to add special cases like a configurable shaped chuck and stock outline (for lathes)

I've always been annoyed by linuxcnc's zoom feature - It would be nice to be able to zoom from cursor position rather then a fixed point.
Thanks for exploring this!

Chris