light_world.lua/README.md

light_world.lua

This is the light modeling done by Priorblue here, only it has been largely refactored and edited to allow for scaling and proper translation.

Features

• Preview (Video)
• polygon shadow calculation Preview
• circle shadow calculation
• image shadow calculation Preview
• shadow blur
• light color, range, smooth and glow Preview
• ambient light
• self shadowing on images with normal maps Preview
• dynamic glow effect on images and circle/poly objects Preview Preview
• generate flat or gradient normal maps Preview
• convert height maps to normal maps Preview
• generate a normal map directly from the image (usually gives poor results)
• shadow color and alpha (glass) Preview
• directional light Preview
• refractions (moveable) Preview
• chromatic aberration Preview
• postshader with many included postshaders, plus easy to extend

Installation

copy the lib folder into your project at any path

How to use

local LightWorld = require "lib/light_world"

-- create light world
lightWorld = LightWorld({
  drawBackground = drawBackground, //the callback to use for drawing the background
  drawForground = drawForground, //the callback to use for drawing the foreground
  ambient = {55,55,55},         //the general ambient light in the environment
})

function love.draw()
  love.graphics.push()
    love.graphics.translate(x, y)
    love.graphics.scale(scale)
    lightWorld:draw(x,y,scale)
  love.graphics.pop()
end

please see the examples directory to see how it is fully used. also this project can be run to show you the deomnstrations.

License

A License has been included in this project