[PD] new luagl

[Thomas Grill]

A more refined version which also supports symbolic OpenGL constants  
as in
[gl MatrixMode TEXTURE]
and lists to the first inlet with all parameters as in
[1 0 0(
|
[gl Color 0 0 0]

gr~~~

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Am 25.07.2008 um 23:37 schrieb Thomas Grill:

> Hi all,
> attached is the file gl.pd_lua (tested with 0.41-4) which uses some  
> special lua features to represent a generic opengl function for GEM.
> GL objects can be created as e.g. [gl Color 1 1 0] or [gl Rect 0 0  
> 400 300]
> gr~~~
>
> <gl.pd_lua>
>
>
> Am 25.07.2008 um 21:39 schrieb marius schebella:
>
>>
>>> Thomas Grill wrote:
>>>> Hi Marius,
>>>> which version of "luagl" are you referring to?
>>>>
>>>> I have the following here (version 1.01):
>>>> *  LuaGL - an OpenGL binding for Lua
>>>> *  2003-2004(c) Fabio Guerra, Cleyde Marlyse
>>>> *  www.luagl.sourceforge.net
>>>>
>>>> as it's designed by default, lua scripts wouldn't require 'luagl'  
>>>> but rather 'opengl', but this can be changed easily.
>>>> Then, OpenGL functions reside in a lua library called gl, which  
>>>> means that the are called via gl.Begin etc.
>>>> I haven't tried from within pdlua, but it seems to basically work  
>>>> in the lua interpreter
>>>>
>>
>> I keep getting the same nil error, I think my code has errors, but  
>> I am not sure where/which.
>>
>> require ("opengl")
>>
>> local basicgl = pd.Class:new():register("basicgl")
>>
>> function basicgl:initialize(name, atoms)
>>  self.inlets = 2
>>  pd.post(tostring(self))
>>  return true
>> end
>>
>> function basicgl:in_1_gem_state(atoms)
>> 	self:render()
>> end
>>
>> function basicgl:render()
>> 	gl.Begin(1)
>> 	gl.Vertex(-1, 1, 0)
>> 	gl.Vertex(1, 1, 0)
>> 	gl.Vertex(1, -1, 0)
>> 	gl.Vertex(-1, -1, 0)
>> 	gl.End()
>> end
>>
>> error: lua: error in dispatcher:
>> [string "basicgl"]:16: attempt to index global 'gl' (a nil value)
>>
>> marius.
>>
>>>> gr~~~
>>>>
>>>>
>>>> Am 19.07.2008 um 20:14 schrieb marius schebella:
>>>>
>>>>> hi,
>>>>> here's the code that I am trying to run:
>>>>> require 'luagl'
>>>>>
>>>>> local testgl1 = pd.Class:new():register("testgl1")
>>>>>
>>>>> function testgl1:initialize(name, atoms)
>>>>>  self.inlets = 2
>>>>>  self.max = 1
>>>>>  pd.post(tostring(self))
>>>>>  return true
>>>>> end
>>>>>
>>>>> function testgl1:in_1(sel, atoms)
>>>>>  if sel == "gem_state" then
>>>>>     testgl1:render(self)
>>>>>  end
>>>>> end
>>>>>
>>>>> function testgl1:in_2_float(f)
>>>>>  self.max = math.abs(f)
>>>>>  pd.post(self.max)
>>>>> end
>>>>>
>>>>> function testgl1:render(myself)
>>>>>  max = math.max(myself.max, 1)
>>>>>  glBegin(GL_LINE_LOOP)
>>>>>  for i=1,max do
>>>>>      r = math.random()
>>>>>      g = math.random()
>>>>>      b = math.random()
>>>>>      glColor3d(r, g, b)
>>>>>      glVertex2d(math.random(-400,400)/100, math.random(-400,400)/ 
>>>>> 100)
>>>>>  end
>>>>>  glEnd()
>>>>> end
>>>>>
>>>>> here's the console printout:
>>>>> error: lua: error in dispatcher:
>>>>> [string "testgl1"]:25: attempt to call global 'glBegin' (a nil  
>>>>> value)
>>>>> I think this code was running in lua0.3..
>>>>> thanks,
>>>>> marius.
>>>>>
>>>>> _______________________________________________
>>>>> Pd-list at iem.at mailing list
>>>>> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
>>>>
>>>> Thomas Grill
>>>> http://grrrr.org
>>>>
>>>>
>>
>
> Thomas Grill
> http://grrrr.org
>
>
> _______________________________________________
> Pd-list at iem.at mailing list
> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list

Thomas Grill
http://grrrr.org


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