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# File 'lib/voxelamming_gem.rb', line 225
def draw_line(x1, y1, z1, x2, y2, z2, r: 1, g: 1, b: 1, alpha: 1)
x1, y1, z1, x2, y2, z2 = [x1, y1, z1, x2, y2, z2].map(&:floor)
diff_x = x2 - x1
diff_y = y2 - y1
diff_z = z2 - z1
max_length = [diff_x.abs, diff_y.abs, diff_z.abs].max
return false if diff_x == 0 && diff_y == 0 && diff_z == 0
if diff_x.abs == max_length
if x2 > x1
(x1..x2).each do |x|
y = y1 + (x - x1) * diff_y.to_f / diff_x
z = z1 + (x - x1) * diff_z.to_f / diff_x
create_box(x, y, z, r: r, g: g, b: b, alpha: alpha)
end
else
x1.downto(x2 + 1) do |x|
y = y1 + (x - x1) * diff_y.to_f / diff_x
z = z1 + (x - x1) * diff_z.to_f / diff_x
create_box(x, y, z, r: r, g: g, b: b, alpha: alpha)
end
end
elsif diff_y.abs == max_length
if y2 > y1
(y1..y2).each do |y|
x = x1 + (y - y1) * diff_x.to_f / diff_y
z = z1 + (y - y1) * diff_z.to_f / diff_y
create_box(x, y, z, r: r, g: g, b: b, alpha: alpha)
end
else
y1.downto(y2 + 1) do |y|
x = x1 + (y - y1) * diff_x.to_f / diff_y
z = z1 + (y - y1) * diff_z.to_f / diff_y
create_box(x, y, z, r: r, g: g, b: b, alpha: alpha)
end
end
elsif diff_z.abs == max_length
if z2 > z1
(z1..z2).each do |z|
x = x1 + (z - z1) * diff_x.to_f / diff_z
y = y1 + (z - z1) * diff_y.to_f / diff_z
create_box(x, y, z, r: r, g: g, b: b, alpha: alpha)
end
else
z1.downto(z2 + 1) do |z|
x = x1 + (z - z1) * diff_x.to_f / diff_z
y = y1 + (z - z1) * diff_y.to_f / diff_z
create_box(x, y, z, r: r, g: g, b: b, alpha: alpha)
end
end
end
end
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