/** This renders an egg with an embossed pattern on it for 3-D printing.
*/

use Plot3D.frink

res = 254/in

g = new graphics[]

/*
g.font["SansSerif", "bold", 10]
g.text["Happy\nEaster!", 0, 0]
img = g.toImage[undef, 400]
img = img.gaussianBlur[3]
img.show[]
*/

img = new image["https://frinklang.org/frinksamp/spiraleggblack.bmp"]
img = img.gaussianBlur[9]
img.show[]

p = new Plot3D[]
p.setBounds[-5, 5, -5, 5, -10, 0.1]
p.setDoublings[9]
p.setResolution[res]
v = p.plot["(x^2 + y^2 + z^2)^2 <= -6 (1.5 z^3 + (1.5 - 1.1) z (y^2 + x^2))"]

pixelTool = newJava["frink.graphics.VoxelArray", [0,2,0,2,0,2,true]]

c = v.centerOfMass[]
emboss = v.sphericalEmboss[img, c.x, c.y, c.z, 180 deg, 360 deg, 0 deg, 180 deg, 0, 200, -1.5 mm res, 0 cm res, 1.5 mm res, 0 cm res, pixelTool, 0, 0, 0]

p.show[emboss]
v = v.union[emboss]
//v.remove[emboss]

p.show[v]
p.writeObj[v,"spiraleggsolid"]
p.writeObj[emboss,"spiraleggshell"]