Joshua Kit Clayton

On Oct 23, 2006, at 5:43 AM, yair reshef wrote:

> hi, i am trying to specify tex_map and tex_map_plane for a 

> my current command: reset, glenable texture, glbindtexture 

> echo_tex, shapeslice 40, cylinder $1 $2 0. $3 $4, gldisable 

> tex_map 1, tex_plane_s 0.5 0. 0. 0.5, tex_plane_t 0. -0.6 0. 0.5

You can't intermix standard jitter object attributes with opengl 

commands inside a jit.gl.sketch command list, unless you're using 

"immediate" mode (which should probably only be used from JS/Java/C). 

I would recommend using the corresponding OpenGL calls to accomplish 

In OpenGL, these attributes correspond to the following C code. Of 

course, you'll want to convert to appropriate jit.gl.sketch syntax 

(convert everything to lower case, remove GL_ from the beginning of 

    glEnable(GL_TEXTURE_GEN_T);        

    glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);

    glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);

    glTexGenfv(GL_S, GL_OBJECT_PLANE, ob3d->tex_plane_s);

    glTexGenfv(GL_T, GL_OBJECT_PLANE, ob3d->tex_plane_t);

    glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);

    glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);

    glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);

    glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);

    glTexGenfv(GL_S, GL_EYE_PLANE, ob3d->tex_plane_s);

    glTexGenfv(GL_T, GL_EYE_PLANE, ob3d->tex_plane_t);

> hi, i am trying to specify tex_map and tex_map_plane for a  
> gl_commands command.
> my current command: reset, glenable texture, glbindtexture  
> echo_tex, shapeslice 40, cylinder $1 $2 0. $3 $4, gldisable  
> texture, gldisable
>
> i want to add to this:
> tex_map 1, tex_plane_s 0.5 0. 0. 0.5, tex_plane_t 0. -0.6 0. 0.5

You can't intermix standard jitter object attributes with opengl  
commands inside a jit.gl.sketch command list, unless you're using  
"immediate" mode (which should probably only be used from JS/Java/C).  
I would recommend using the corresponding OpenGL calls to accomplish  
this.

In OpenGL, these attributes correspond to the following C code. Of  
course, you'll want to convert to appropriate jit.gl.sketch syntax  
(convert everything to lower case, remove GL_ from the beginning of  
symbolic constants, etc.).

// texture mapping modes
switch (ob3d->tex_map)
{
case 1:
	glEnable(GL_TEXTURE_GEN_S);
	glEnable(GL_TEXTURE_GEN_T);		
	glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
	glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_OBJECT_LINEAR);
	glTexGenfv(GL_S, GL_OBJECT_PLANE, ob3d->tex_plane_s);
	glTexGenfv(GL_T, GL_OBJECT_PLANE, ob3d->tex_plane_t);
	break;
case 2:
	glEnable(GL_TEXTURE_GEN_S);
	glEnable(GL_TEXTURE_GEN_T);		
	glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
	glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_SPHERE_MAP);
	break;
case 3:
	glEnable(GL_TEXTURE_GEN_S);
	glEnable(GL_TEXTURE_GEN_T);		
	glTexGeni(GL_S, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
	glTexGeni(GL_T, GL_TEXTURE_GEN_MODE, GL_EYE_LINEAR);
	glTexGenfv(GL_S, GL_EYE_PLANE, ob3d->tex_plane_s);
	glTexGenfv(GL_T, GL_EYE_PLANE, ob3d->tex_plane_t);
	break;
default:
	glDisable(GL_TEXTURE_GEN_S);
	glDisable(GL_TEXTURE_GEN_T);
	break;
}

re-adding-tex_map-into-gl_commands-routine

Very old post I know. Trying to do something similar in gl I think (outside of gl it's the same as Wesleys patch here: 

https://cycling74.com/forums/question-about-subtractive-texturing

gltexgeni s, texture_gen_mode, eye_linear,

gltexgeni t, texture_gen_mode, eye_linear,

gltexgenfv s, eye_plane, ob3d->tex_plane_s,

gltexgenfv t, eye_plane, ob3d->tex_plane_t,

Shouldn't there be numbers somewhere to do the mapping? Thanks in advance.

Wesleys patch with that tiny change to illustrate what I mean.

Very old post I know. Trying to do something similar in gl I think (outside of gl it's the same as Wesleys patch here: https://cycling74.com/forums/question-about-subtractive-texturing with tex_map 3 instead of 1).

glenable texture_gen_s,
glenable texture_gen_t,
gltexgeni s, texture_gen_mode, eye_linear,
gltexgeni t, texture_gen_mode, eye_linear,
gltexgenfv s, eye_plane, ob3d->tex_plane_s,
gltexgenfv t, eye_plane, ob3d->tex_plane_t,

Shouldn't there be numbers somewhere to do the mapping?  Thanks in advance.

Wesleys patch with that tiny change to illustrate what I mean.


Re: adding tex_map into gl_commands routine