3D rectangle with an outline

This snippet was created and submitted by gl0ck.

Description

Draws a rectangle in 3D space with an outline.

• pos is a vector of world coordinates
• w is the width of the rectangle
• h is the height of the rectangle
• r represents the red value between 0 and 255
• g represents the green value between 0 and 255
• b represents the blue value between 0 and 255
• a represents the alpha value between 0 and 255

Code

renderer.rectangle_outline_3d = function(pos, w, h, r, g, b, a)
    local old = {}

    for rot = 0, 360, 90 do
        local rad_rot = math.rad(rot)
        local cos_rot = math.cos(rad_rot)
        local sin_rot = math.sin(rad_rot)

        local line = vector(w * cos_rot + pos.x, h * sin_rot + pos.y, pos.z)
        local w2s = { renderer.world_to_screen(line.x, line.y, line.z) }

        if w2s[1] and old[1] then
            for i = 1, 1 do
                local i = i - 1
                renderer.line(w2s[1], w2s[2] - i, old[1], old[2] - i, r, g, b, a)
            end
        end

        old = { w2s[1], w2s[2] }
    end
end