floodFillTest.frink

Download or view floodFillTest.frink in plain text format


/** This tests the "flood fill" routines in VoxelArray which can be used to
    calculate volumes of tricky shapes.  */


res = 254/in

thickness = 1.2 mm
innerDiam = 2 inch

outer = callJava["frink.graphics.VoxelArray", "makeSphere", [(innerDiam/2 + thickness) res]]
inner = callJava["frink.graphics.VoxelArray", "makeSphere", [innerDiam/2 res]]

outer.remove[inner]

start = now[]
inside = outer.floodFill[outer.getMinX[], outer.getMaxX[],
                         outer.getMinY[], outer.getMaxY[],
                         outer.getMinZ[], outer.getMaxZ[],
                         0,0,0]
end = now[]
println["Time in flood fill was " + format[end-start, "ms", 0]]

vol = inside.countSetBits[]
println["Volume is $vol voxels"]
physvol = vol / res^3
calcvol = 4/3 pi (innerDiam/2)^3
println["Physical   Volume is " + format[physvol, "in^3", 7]]
println["Calculated Volume is " + format[calcvol, "in^3", 7]]
error = abs[physvol-calcvol]/calcvol
print["Error is " + format[error, "percent", 5]]
println[" (1 part in " + round[1/error] + ")"]

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

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


Download or view floodFillTest.frink in plain text format


This is a program written in the programming language Frink.
For more information, view the Frink Documentation or see More Sample Frink Programs.

Alan Eliasen was born 19908 days, 20 hours, 30 minutes ago.