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Contents
class Cube
include Processing::Proxy # mixin Processing::Proxi
attr_accessor :vertices
attr_accessor :w, :h, :d
attr_accessor :position, :speed, :rotation # Vec3D
def initialize (dim)
@w, @h, @d = dim, dim, dim
w2 = @w / 2
h2 = @h / 2
d2 = @d / 2
tfl = Vec3D.new(-w2, h2, d2) # four points making the top quad:
tfr = Vec3D.new(w2, h2, d2) # "tfl" is "top front left", etc
tbr = Vec3D.new(w2, h2,-d2)
tbl = Vec3D.new(-w2, h2,-d2)
bfl = Vec3D.new(-w2,-h2, d2) # bottom quad points
bfr = Vec3D.new(w2,-h2, d2)
bbr = Vec3D.new(w2,-h2,-d2)
bbl = Vec3D.new(-w2,-h2,-d2)
@vertices = [
[tfl, tfr, tbr, tbl], # top
[tfl, tfr, bfr, bfl], # front
[tfl, tbl, bbl, bfl], # left
[tbl, tbr, bbr, bbl], # back
[tbr, tfr, bfr, bbr], # right
[bfl, bfr, bbr, bbl]
]
end
def draw (side_colors = nil)
@vertices.each_with_index { |quad, i| # each face
begin_shape QUADS
fill side_colors[i] if side_colors && i < side_colors.length
quad.each { |vec|
vertex vec.x, vec.y, vec.z
}
end_shape
}
end
end
Version data entries
7 entries across 7 versions & 1 rubygems