2D rounded rectangle

This snippet was created and submitted by LosAngeles.

Description

Draws a rounded rectangle in 2D space.

Code

renderer.rounded_rectangle = function(x, y, w, h, r, g, b, a, radius)
    y = y + radius
    local data_circle = {
        {x + radius, y, 180},
        {x + w - radius, y, 90},
        {x + radius, y + h - radius * 2, 270},
        {x + w - radius, y + h - radius * 2, 0},
    }

    local data = {
        {x + radius, y, w - radius * 2, h - radius * 2},
        {x + radius, y - radius, w - radius * 2, radius},
        {x + radius, y + h - radius * 2, w - radius * 2, radius},
        {x, y, radius, h - radius * 2},
        {x + w - radius, y, radius, h - radius * 2},
    }

    for _, data in next, data_circle do
        renderer.circle(data[1], data[2], r, g, b, a, radius, data[3], 0.25)
    end

    for _, data in next, data do
        renderer.rectangle(data[1], data[2], data[3], data[4], r, g, b, a)
    end
end