small changes

.JuliaFormatter.toml

@@ -0,0 +1,15 @@
+style = "blue"
+
+margin = 120
+always_for_in = true
+whitespace_ops_in_indices = true
+remove_extra_newlines = true
+import_to_using = true
+pipe_to_function_call = false
+short_to_long_function_def = false
+always_use_return = false
+format_docstrings = true
+conditional_to_if = true
+trailing_comma = true
+join_lines_based_on_source = false
+format_markdown = true

process.jl

@@ -1,63 +1,70 @@
 using MeshIO
 using FileIO
-using GeometryBasics
 
 using LinearAlgebra
 
-
-stl = load(raw"C:\Users\albig\Downloads\cubeblender.stl") 
+stl = load(raw"C:\Users\albig\Downloads\cubeblender.stl")
+# stl = load(raw"C:\Coding\stl_read\3DBenchy.stl")
 
 function get_mass_properties(triangles)
-	x = [ [v[1] for v in tri] for tri in triangles] |> x -> reduce(hcat,x)'
-	y = [ [v[2] for v in tri] for tri in triangles] |> x -> reduce(hcat,x)'
-	z = [ [v[3] for v in tri] for tri in triangles] |> x -> reduce(hcat,x)'
+    x = reduce(hcat, [[v[1] for v in tri] for tri in triangles])'
+    y = reduce(hcat, [[v[2] for v in tri] for tri in triangles])'
+    z = reduce(hcat, [[v[3] for v in tri] for tri in triangles])'
 
+    function subexpression(x)
+        w0, w1, w2 = x[:, 1], x[:, 2], x[:, 3]
+        temp0 = w0 + w1
+        f1 = temp0 + w2
+        temp1 = w0 .* w0
+        temp2 = temp1 .+ w1 .* temp0
+        f2 = temp2 .+ w2 .* f1
+        f3 = w0 .* temp1 .+ w1 .* temp2 .+ w2 .* f2
+        g0 = f2 .+ w0 .* (f1 .+ w0)
+        g1 = f2 .+ w1 .* (f1 .+ w1)
+        g2 = f2 .+ w2 .* (f1 .+ w2)
+        return f1, f2, f3, g0, g1, g2
+    end
 
-	function subexpression(x)
-		w0, w1, w2 = x[:, 1], x[:, 2], x[:, 3]
-		temp0 = w0 + w1
-		f1 = temp0 + w2
-		temp1 = w0 .* w0
-		temp2 = temp1 .+ w1 .* temp0
-		f2 = temp2 .+ w2 .* f1
-		f3 = w0 .* temp1 .+ w1 .* temp2 .+ w2 .* f2
-		g0 = f2 .+ w0 .* (f1 .+ w0)
-		g1 = f2 .+ w1 .* (f1 .+ w1)
-		g2 = f2 .+ w2 .* (f1 .+ w2)
-		return f1, f2, f3, g0, g1, g2
-	end
+    x0, x1, x2 = x[:, 1], x[:, 2], x[:, 3]
+    y0, y1, y2 = y[:, 1], y[:, 2], y[:, 3]
+    z0, z1, z2 = z[:, 1], z[:, 2], z[:, 3]
+    a1, b1, c1 = x1 - x0, y1 - y0, z1 - z0
+    a2, b2, c2 = x2 - x0, y2 - y0, z2 - z0
+    d0, d1, d2 = b1 .* c2 .- b2 .* c1, a2 .* c1 .- a1 .* c2, a1 .* b2 .- a2 .* b1
 
-	x0, x1, x2 = x[:, 1], x[:, 2], x[:, 3]
-	y0, y1, y2 = y[:, 1], y[:, 2], y[:, 3]
-	z0, z1, z2 = z[:, 1], z[:, 2], z[:, 3]
-	a1, b1, c1 = x1 - x0, y1 - y0, z1 - z0
-	a2, b2, c2 = x2 - x0, y2 - y0, z2 - z0
-	d0, d1, d2 = b1 .* c2 .- b2 .* c1, a2 .* c1 .- a1 .* c2, a1 .* b2 .- a2 .* b1
+    f1x, f2x, f3x, g0x, g1x, g2x = subexpression(x)
+    f1y, f2y, f3y, g0y, g1y, g2y = subexpression(y)
+    f1z, f2z, f3z, g0z, g1z, g2z = subexpression(z)
 
-	f1x, f2x, f3x, g0x, g1x, g2x = subexpression(x)
-	f1y, f2y, f3y, g0y, g1y, g2y = subexpression(y)
-	f1z, f2z, f3z, g0z, g1z, g2z = subexpression(z)
+    intg = zeros(10)
+    intg[1] = sum(d0 .* f1x)
+    intg[2:4] = [sum(d0 .* f2x), sum(d1 .* f2y), sum(d2 .* f2z)]
+    intg[5:7] = [sum(d0 .* f3x), sum(d1 .* f3y), sum(d2 .* f3z)]
+    intg[8] = sum(d0 .* (y0 .* g0x + y1 .* g1x + y2 .* g2x))
+    intg[9] = sum(d1 .* (z0 .* g0y + z1 .* g1y + z2 .* g2y))
+    intg[10] = sum(d2 .* (x0 .* g0z + x1 .* g1z + x2 .* g2z))
+    intg = intg ./ [6, 24, 24, 24, 60, 60, 60, 120, 120, 120]
 
-	intg = zeros(10)
-	intg[1] = sum(d0 .* f1x)
-	intg[2:4] = [sum(d0 .* f2x), sum(d1 .* f2y), sum(d2 .* f2z)]
-	intg[5:7] = [sum(d0 .* f3x), sum(d1 .* f3y), sum(d2 .* f3z)]
-	intg[8] = sum(d0 .* (y0 .* g0x + y1 .* g1x + y2 .* g2x))
-	intg[9] = sum(d1 .* (z0 .* g0y + z1 .* g1y + z2 .* g2y))
-	intg[10] = sum(d2 .* (x0 .* g0z + x1 .* g1z + x2 .* g2z))
-	intg = intg ./ [6, 24, 24, 24, 60, 60, 60, 120, 120, 120]
-	volumee = intg[1]
-	cog = intg[2:4] / volumee
-	cogsq = cog .^ 2
-	inertia = zeros((3, 3))
-	inertia[1, 1] = intg[6] + intg[7] - volumee .* (cogsq[2] + cogsq[3])
-	inertia[2, 2] = intg[5] + intg[7] - volumee .* (cogsq[3] + cogsq[1])
-	inertia[3, 3] = intg[5] + intg[6] - volumee .* (cogsq[1] + cogsq[2])
-	inertia[1, 2] = inertia[2, 1] = -(intg[8] - volumee .* cog[1] .* cog[2])
-	inertia[2, 3] = inertia[3, 2] = -(intg[9] - volumee .* cog[2] .* cog[3])
-	inertia[1, 3] = inertia[3, 1] = -(intg[10] - volumee .* cog[3] .* cog[1])
-	return volume, cog, inertia
+    volume = intg[1]
+
+    center_of_gravity = intg[2:4] / volume
+    cogsq = center_of_gravity .^ 2
+
+    inertia = zeros((3, 3))
+    inertia[1, 1] = intg[6] + intg[7] - volume .* (cogsq[2] + cogsq[3])
+    inertia[2, 2] = intg[5] + intg[7] - volume .* (cogsq[3] + cogsq[1])
+    inertia[3, 3] = intg[5] + intg[6] - volume .* (cogsq[1] + cogsq[2])
+    inertia[1, 2] = inertia[2, 1] = -(intg[8] - volume .* center_of_gravity[1] .* center_of_gravity[2])
+    inertia[2, 3] = inertia[3, 2] = -(intg[9] - volume .* center_of_gravity[2] .* center_of_gravity[3])
+    inertia[1, 3] = inertia[3, 1] = -(intg[10] - volume .* center_of_gravity[3] .* center_of_gravity[1])
+
+    return volume, center_of_gravity, inertia
 end
-volumee
+
+v, cog, inertia = get_mass_properties(stl)
+
+v
 cog
-inertia
+inertia
+
+eigen(inertia)