mirror of
https://github.com/tanema/light_world.lua.git
synced 2024-10-16 21:04:17 +00:00
added in another example for using just the postshader, and added a readme for github
This commit is contained in:
Tim Anema
parent
c9fac640d7
commit
00331a51c1
55
README.md
Normal file
55
README.md
Normal file
@ -0,0 +1,55 @@
|
|||||||
|
# light_world.lua
|
||||||
|
|
||||||
|
This is the light modeling done by Priorblue [here](https://bitbucket.org/PriorBlue/love2d-light-and-shadow-engine),
|
||||||
|
only it has been largely refactored and edited to allow for scaling and proper translation.
|
||||||
|
|
||||||
|
## Features ##
|
||||||
|
* **[Preview (Video)](https://www.youtube.com/watch?v=6V5Dtsa6Nd4)**
|
||||||
|
* polygon shadow calculation [Preview](http://onepixelahead.de/love2d_polyshadow.png)
|
||||||
|
* circle shadow calculation
|
||||||
|
* image shadow calculation [Preview](http://onepixelahead.de/love2d_polyshadow18.png)
|
||||||
|
* shadow blur
|
||||||
|
* light color, range, smooth and glow [Preview](http://onepixelahead.de/love2d_polyshadow2.png)
|
||||||
|
* ambient light
|
||||||
|
* self shadowing on images with normal maps [Preview](http://onepixelahead.de/love2d_polyshadow_pixelshadow.png)
|
||||||
|
* dynamic glow effect on images and circle/poly objects [Preview](http://onepixelahead.de/love2d_polyshadow_glow.png) [Preview](http://onepixelahead.de/love2d_polyshadow15.gif)
|
||||||
|
* generate flat or gradient normal maps [Preview](http://onepixelahead.de/love2d_polyshadow7.png)
|
||||||
|
* convert height maps to normal maps [Preview](http://onepixelahead.de/love2d_polyshadow8.png)
|
||||||
|
* generate a normal map directly from the image (usually gives poor results)
|
||||||
|
* shadow color and alpha (glass) [Preview](http://onepixelahead.de/love2d_polyshadow9.png)
|
||||||
|
* directional light [Preview](http://onepixelahead.de/love2d_polyshadow12.png)
|
||||||
|
* refractions (moveable) [Preview](http://onepixelahead.de/love2d_polyshadow13.gif)
|
||||||
|
* chromatic aberration [Preview](http://onepixelahead.de/love2d_polyshadow16.gif)
|
||||||
|
* postshader with many included postshaders, plus easy to extend
|
||||||
|
|
||||||
|
## Installation
|
||||||
|
|
||||||
|
copy the lib folder into your project at any path
|
||||||
|
|
||||||
|
## How to use
|
||||||
|
|
||||||
|
```lua
|
||||||
|
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
|
||||||
119
examples/postshaders.lua
Normal file
119
examples/postshaders.lua
Normal file
@ -0,0 +1,119 @@
|
|||||||
|
-- Example: Only Postshader Example
|
||||||
|
local PostShader = require "lib/postshader"
|
||||||
|
|
||||||
|
function love.load()
|
||||||
|
testShader = 0
|
||||||
|
x = 0
|
||||||
|
y = 0
|
||||||
|
scale = 1
|
||||||
|
colorAberration = 0.0
|
||||||
|
-- load images
|
||||||
|
image = love.graphics.newImage("gfx/machine2.png")
|
||||||
|
quadScreen = love.graphics.newQuad(0, 0, love.window.getWidth() + 32, love.window.getHeight() + 24, 32, 24)
|
||||||
|
imgFloor = love.graphics.newImage("gfx/floor.png")
|
||||||
|
imgFloor:setWrap("repeat", "repeat")
|
||||||
|
|
||||||
|
post_shader = PostShader()
|
||||||
|
render_buffer = love.graphics.newCanvas(love.window.getWidth(), love.window.getHeight())
|
||||||
|
end
|
||||||
|
|
||||||
|
function love.keypressed(k)
|
||||||
|
if k == "1" then
|
||||||
|
post_shader:toggleEffect("four_colors", {15, 56, 15}, {48, 98, 48}, {139, 172, 15}, {155, 188, 15})
|
||||||
|
elseif k == "2" then
|
||||||
|
post_shader:toggleEffect("monochrome")
|
||||||
|
elseif k == "3" then
|
||||||
|
post_shader:toggleEffect("scanlines")
|
||||||
|
elseif k == "4" then
|
||||||
|
post_shader:toggleEffect("tilt_shift", 4.0)
|
||||||
|
elseif k == "5" then
|
||||||
|
post_shader:toggleEffect("bloom", 2.0, 0.25)
|
||||||
|
elseif k == "6" then
|
||||||
|
post_shader:toggleEffect("blur", 2.0, 2.0)
|
||||||
|
elseif k == "7" then
|
||||||
|
post_shader:toggleEffect("black_and_white")
|
||||||
|
elseif k == "8" then
|
||||||
|
post_shader:toggleEffect("curvature")
|
||||||
|
elseif k == "9" then
|
||||||
|
post_shader:toggleEffect("edges")
|
||||||
|
elseif k == "0" then
|
||||||
|
post_shader:toggleEffect("hdr_tv")
|
||||||
|
elseif k == "q" then
|
||||||
|
post_shader:toggleEffect("phosphor")
|
||||||
|
elseif k == "w" then
|
||||||
|
post_shader:toggleEffect("phosphorish")
|
||||||
|
elseif k == "e" then
|
||||||
|
post_shader:toggleEffect("pip")
|
||||||
|
elseif k == "r" then
|
||||||
|
post_shader:toggleEffect("pixellate")
|
||||||
|
elseif k == "t" then
|
||||||
|
post_shader:toggleEffect("radialblur")
|
||||||
|
elseif k == "y" then
|
||||||
|
post_shader:toggleEffect("waterpaint")
|
||||||
|
elseif k == "c" then
|
||||||
|
if colorAberration == 0.0 then
|
||||||
|
colorAberration = 3.0
|
||||||
|
end
|
||||||
|
end
|
||||||
|
end
|
||||||
|
|
||||||
|
function love.update(dt)
|
||||||
|
love.window.setTitle("Light vs. Shadow Engine (FPS:" .. love.timer.getFPS() .. ")")
|
||||||
|
|
||||||
|
if love.keyboard.isDown("up") then
|
||||||
|
y = y - dt * 200
|
||||||
|
elseif love.keyboard.isDown("down") then
|
||||||
|
y = y + dt * 200
|
||||||
|
end
|
||||||
|
|
||||||
|
if love.keyboard.isDown("left") then
|
||||||
|
x = x - dt * 200
|
||||||
|
elseif love.keyboard.isDown("right") then
|
||||||
|
x = x + dt * 200
|
||||||
|
end
|
||||||
|
|
||||||
|
if love.keyboard.isDown("-") then
|
||||||
|
scale = scale - 0.01
|
||||||
|
elseif love.keyboard.isDown("=") then
|
||||||
|
scale = scale + 0.01
|
||||||
|
end
|
||||||
|
|
||||||
|
colorAberration = math.max(0.0, colorAberration - dt * 10.0)
|
||||||
|
if colorAberration > 0.0 then
|
||||||
|
post_shader:addEffect("blur", 2.0, 2.0)
|
||||||
|
post_shader:addEffect("chromatic_aberration")
|
||||||
|
else
|
||||||
|
post_shader:removeEffect("blur")
|
||||||
|
post_shader:removeEffect("chromatic_aberration")
|
||||||
|
end
|
||||||
|
|
||||||
|
lightMouse:setPosition(love.mouse.getX()/scale, love.mouse.getY()/scale)
|
||||||
|
end
|
||||||
|
|
||||||
|
function love.draw()
|
||||||
|
local w, h = love.graphics.getWidth(), love.graphics.getHeight()
|
||||||
|
render_buffer:clear()
|
||||||
|
love.graphics.push()
|
||||||
|
love.graphics.setCanvas(render_buffer)
|
||||||
|
love.graphics.translate(x, y)
|
||||||
|
love.graphics.scale(scale)
|
||||||
|
|
||||||
|
love.graphics.setColor(255, 255, 255)
|
||||||
|
love.graphics.draw(imgFloor, quadScreen, 0,0)
|
||||||
|
|
||||||
|
love.graphics.setColor(63, 255, 127)
|
||||||
|
love.graphics.circle("fill", 256, 256, 16)
|
||||||
|
love.graphics.rectangle("fill", 512, 512, 64, 64)
|
||||||
|
love.graphics.setColor(255, 255, 255)
|
||||||
|
love.graphics.draw(image, 64 - image:getWidth() * 0.5, 64 - image:getHeight() * 0.5)
|
||||||
|
love.graphics.pop()
|
||||||
|
|
||||||
|
love.graphics.setCanvas()
|
||||||
|
post_shader:drawWith(render_buffer)
|
||||||
|
|
||||||
|
love.graphics.setBlendMode("alpha")
|
||||||
|
love.graphics.setColor(0, 0, 0, 191)
|
||||||
|
love.graphics.rectangle("fill", 0, 0, love.graphics.getWidth(), 24)
|
||||||
|
love.graphics.setColor(0, 255, 0)
|
||||||
|
love.graphics.print("To toggle postshaders, use 0-9 and q->y, to scale use - and =, and to translate use arrows")
|
||||||
|
end
|
||||||
@ -119,6 +119,12 @@ function love.draw()
|
|||||||
love.graphics.scale(scale)
|
love.graphics.scale(scale)
|
||||||
lightWorld:draw(x,y,scale)
|
lightWorld:draw(x,y,scale)
|
||||||
love.graphics.pop()
|
love.graphics.pop()
|
||||||
|
|
||||||
|
love.graphics.setBlendMode("alpha")
|
||||||
|
love.graphics.setColor(0, 0, 0, 191)
|
||||||
|
love.graphics.rectangle("fill", 0, 0, love.graphics.getWidth(), 24)
|
||||||
|
love.graphics.setColor(0, 255, 0)
|
||||||
|
love.graphics.print("To toggle postshaders, use 0-9 and q->y, to scale use - and =, and to translate use arrows")
|
||||||
end
|
end
|
||||||
|
|
||||||
function drawBackground(l,t,w,h)
|
function drawBackground(l,t,w,h)
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user