Here’s a small example that might help.
function setup()
iparameter("R",-360,360, 60)
parameter("x",0,1,.5)
parameter("y",0,1,.5)
parameter("z",0,1,.5)
iparameter("size", 1, 50, 20)
end
function draw()
background(0, 0, 0, 255)
perspective(50,WIDTH/HEIGHT)
camera(-200,0,0,0,0,0,0,1,0)
rotate(R,x,y,z)
fill(255, 0, 0, 255)
cube(0,0,0,size,size,size)
end
function cube(x,y,z,w,h,d)
local cube = mesh()
v = {
vec3(x-w,y-h,z+d),vec3(x-w,y+h,z+d),vec3(x+w,y-h,z+d),vec3(x+w,y+h,z+d),
vec3(x-w,y-h,z-d),vec3(x-w,y+h,z-d),vec3(x+w,y-h,z-d),vec3(x+w,y+h,z-d)
}
local faces = {
v[1],v[2],v[3],v[2],v[3],v[4],
v[2],v[4],v[6],v[4],v[6],v[8],
v[1],v[2],v[5],v[2],v[5],v[6],
v[3],v[4],v[7],v[4],v[7],v[8],
v[1],v[3],v[5],v[3],v[5],v[7],
v[5],v[6],v[7],v[6],v[7],v[8]
}
local c = { color(255, 0, 0, 255), color(0, 255, 0, 255), color(255, 243, 0, 255),
color(0, 0, 255, 255), color(255, 255, 255, 255), color(255, 0, 189, 255)}
local colors = {}
for i = 1, 6 do
for j = 1, 6 do
table.insert(colors, c[i])
end
end
cube.vertices = faces
cube.colors = colors
cube:draw()
end