Created
June 10, 2025 18:49
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Debug Polygon #scad
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| module debug_polygon(points, paths=undef, convexity=undef, debug=false, | |
| arrow_size=1, font_size=4, font_color="red", | |
| show_arrows=true) { | |
| polygon(points=points, paths=paths, convexity=convexity); | |
| if (debug) { | |
| for (i = [0 : len(points) - 1]) { | |
| pt = points[i]; | |
| color(font_color) | |
| translate([pt[0], pt[1], 0.1]) | |
| linear_extrude(height = 0.5) | |
| text(str(i), size = font_size, valign="center", halign="center"); | |
| color("yellow") | |
| translate([pt[0], pt[1]]) | |
| circle(r = 0.5); | |
| } | |
| if (show_arrows) { | |
| all_paths = paths == undef ? [ [ for (i = [0 : len(points)-1]) i ] ] : paths; | |
| for (path = all_paths) | |
| for (i = [0 : len(path)-1]) { | |
| a = points[path[i]]; | |
| b = points[path[(i+1)%len(path)]]; | |
| dx = b[0] - a[0]; | |
| dy = b[1] - a[1]; | |
| angle = atan2(dy, dx); | |
| mid = [ (a[0]+b[0])/2, (a[1]+b[1])/2 ]; | |
| color("green") | |
| translate([mid[0], mid[1], 0.1]) | |
| rotate([0, 0, angle]) | |
| linear_extrude(height = 0.5) | |
| polygon(points=[[0,0],[arrow_size,arrow_size/2],[arrow_size,-arrow_size/2]]); | |
| } | |
| } | |
| } | |
| } | |
| points = [[0,0], [40,0], [40,20], [20,40], [0,20]]; | |
| paths = [[0, 1, 2, 3, 4]]; | |
| debug_polygon(points=points, paths=paths, debug=true); |
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