/** This program tests the extrusion of a polygon for 3D printing. */

polygon = newJava["frink.graphics.Point2DFloatList"]

sides = 7
sideAngle = circle/sides
angle = 90 deg  // Point at top

outerRadius = .5 in

res = 254/in

for i=0 to sides-1
{
   x = outerRadius cos[angle] res
   y = outerRadius sin[angle] res
   polygon.addPoint[x,y]
   angle = angle + sideAngle
}

c = polygon.getCentroidAndArea[]
println["Area is " + format[c.area / (res^2), "in^2", 4]]
println["Centroid is [" + format[c.centroid.x/res, "in", 5] + ", " + format[c.centroid.y/res, "in", 5] + "]"]

bb = polygon.getBoundingBox[]
println["Bounding box is: " + bb.toString[]]

v = callJava["frink.graphics.VoxelArray", "extrudeZ", [polygon, round[0 in res], round[1 in res]]]

v.projectX[undef].show["X"]
v.projectY[undef].show["Y"]
v.projectZ[undef].show["Z"]

filename = "VoxelPolygonTest.obj"
print["Writing $filename..."]
w = new Writer[filename]
w.println[v.toObjFormat["rotate", 1/(res mm)]]
w.close[]
println["done."]