LjES : 3D framework for LuaJIT on Raspberry Pi
2017/12/07 Jun Mizutani <mizutani.jun@nifty.ne.jp>
https://www.mztn.org/rpi/rpi_ljes2.html
LjES is a small 3D framework for Raspberry Pi built on top of the
OpenGL ES 2.0. LjES is written by 100% LuaJIT. The goal of this
framework is to make 3D graphics programming easy. The Raspbian
Linux disk image contains the LuaJIT-2.0. You don't need to install
any packages on Raspberry Pi to use LjES.
o LjES-2.0 supports Collada file loading and skeletal animation.
o ColladaShape class can load the collada format exported by Blender.
o BonePhong shader supports up to 40 bones per mesh.
Usage :
tar zxf ljes-2.01.tar.gz
cd ljes-2.01
cd examples
luajit demo_spheres.lua
luajit hand.lua
Hit [q] key to quit, [p] for screenshot.
Example :
package.path = "../LjES/?.lua;" .. package.path
local demo = require("demo")
demo.screen(0, 0)
local aSpace = demo.getSpace()
local eye = aSpace:addNode(nil, "eye")
eye:setPosition(0, 0, 30)
demo.backgroundColor(0.2, 0.2, 0.4)
local shape = Shape:new()
shape:donut(8, 3, 16, 16)
shape:endShape()
shape:shaderParameter("color", {1.0, 0.5, 0.6, 1.0})
local node = aSpace:addNode(nil, "node1")
node:setPosition(0, 0, 0)
node:addShape(shape)
function draw()
node:rotateX(0.1)
aSpace:draw(eye)
end
demo.loop(draw, true)
demo.exit()