3DS Files, textures and importing into Isadora.

[hairi]

It's a puzzle for me. I never got into 3D Model creation and do not want to. I checked various software but it's all too alien. 

I used the only model i have that actually works, the cube in the Isadora examples. It comes as a .3ds file with "some texture files" in the same folder and allows to use the texture input of the 3D Player in Isadora. This works even after moving the entire folder. Perfect, once understood that the cube is somewhere odd in the 3D space and requires a z-translation > -30 to be in view.

Could you publish a small set of similar, very simple 3D models to be enjoyed by the community ? I need a cylinder, a ball if it's possible to spread a video texure on that and optionally a heart, a star and an egg. 

I am glad to pay for this effort (or make a donation to your favourite charity (unless I cannot agree to it's politics)) and wish that the result is shared.

Thanks for considering

yours 

Hairi

[Skulpture]

@hairi 

Hi. Thanks for the nice message. I can easily create these shapes (or similar) and use the cubecl texture on all the 3D models. That way; all shapes will work like the cube but the cube texture will look awful on any other shape. But it should work. 

I will attempt this asap for you. 

[Skulpture]

This is what I have so far.

A cube, cylinder and an egg.

Download the three files and the black gloss texture and keep them in the same folder.

Files.

[hairi]

@skulpture

many thanks. works perfectly. I owe you one. name it ! 

btw forgot to ask for a cone-shape ... a cone and a cylinder should make a nice 3D arrow !

fyi

I am working on something that uses a ultra-short-throw (0.25) video-projection to the inside of a cylinder. My guess is that projecting onto a 3D virtual cylinder will do the necessary anamorphism to correct for the distortion of the projection. Will see that later today.

cheers

h

[Skulpture]

I have added a cone into the folder for you.

[bonemap]

@skulpture said:

cube, cylinder and an egg

 There are a number of more complex shapes as textured 3D files prepared for use in Isadora linked to a previous forum thread: https://community.troikatronix...

best wishes

bonemap

[Skulpture]

@bonemap said:

@skulpture said:

cube, cylinder and an egg

 There are a number of more complex shapes as textured 3D files prepared for use in Isadora linked to a previous forum thread: https://community.troikatronix...
best wishes
bonemap

 Ah yes thank you @bonemap I have added them to my folder so people can download then also.

[hairi]

3D heaven on the way !!!

[Skulpture]

@hairi said:

3D heaven on the way !!!

 Have fun - please share your results. Would love to see them!

[hairi]

I will asap. (i'm on a holiday for a week). Meanwhile I developed a little GLSL actor that is similar to Matte++ but more flexible. It allows to move and zoom the image projected on the 3D model. Just copy and paste the code in the attached file into a GLSL actor. 

cheers 

h

 

[hairi]

do not know if attachments work. here's the code:

uniform sampler2D iChannel0;
uniform vec3 iResolution;
uniform float iTime;
// ISADORA_FLOAT_PARAM(src_zoom_x, xz, 0., 10., 1.0, "source image zoom horizontal");
uniform float src_zoom_x;
// ISADORA_FLOAT_PARAM(src_zoom_y, yz, 0., 10., 1.0, "source image zoom vertical");
uniform float src_zoom_y;
// ISADORA_FLOAT_PARAM(src_scroll_x, xp, -10., 10., -0.0, "source image scroll horizontal");
uniform float src_scroll_x;
// ISADORA_FLOAT_PARAM(src_scroll_y, yp, -10., 10., -0.0, "source image scroll vertical");
uniform float src_scroll_y;
// ISADORA_FLOAT_PARAM(dst_zoom_x, xs, 0., 10., 1.0, "destination image zoom horizontal");
uniform float dst_zoom_x;
// ISADORA_FLOAT_PARAM(dst_zoom_y, ys, 0., 10., 1.0, "destination image zoom vertical");
uniform float dst_zoom_y;
// ISADORA_FLOAT_PARAM(dst_pos_x, xpo, -10., 10., 0.0, "destination image position horizontal");
uniform float dst_pos_x;
// ISADORA_FLOAT_PARAM(dst_pos_y, ypo, -10., 10., 0.0, "destination image position vertical");
uniform float dst_pos_y;
// ISADORA_INT_PARAM(mask, msk, 0, 1, 0, "mask source image repeats");
uniform int mask;
// ISADORA_FLOAT_PARAM(blur, blr, 0., 10., 0.0, "blur mask");
uniform float blur;
// ISADORA_FLOAT_PARAM(transp_thres, tt, 0., 1., 0.0, "black to transparent thresh");
uniform float transp_thres;
void main(void) {
 vec2 uv = gl_FragCoord.xy / iResolution.xy;
 vec2 stretch = 1.0 / vec2(dst_zoom_x,dst_zoom_y);
 vec2 zoom = 1.0 / vec2(src_zoom_x,src_zoom_y);
 vec2 pan = (stretch - vec2(1.0)) / -2.0; // compensation for stretching
 vec2 pan2 = (zoom - vec2(1.0)) / -2.0; // compensation for stretching
 
 vec4 image = texture2D(iChannel0, (uv 
 * zoom
 + pan2)
 * stretch
 + pan
 + vec2(src_scroll_x,src_scroll_y) 
 + (vec2(dst_pos_x,-dst_pos_y) * -stretch)
 ).rgba;
 
 image.a = step(transp_thres,length(image.rgb));

 if(mask > 0){
 
 float left = (1.0-(dst_zoom_x)) / 2.0;
 float right = 1.0 - left;
 float bottom = (1.0-(dst_zoom_y)) / 2.0;
 float top = 1.0 - bottom;
 
 left = left + dst_pos_x;
 right = right + dst_pos_x;
 top = top - dst_pos_y;
 bottom = bottom - dst_pos_y;
 
 float blurr = max(blur / 10.0,1.0 / iResolution.x); // size of one pixel
image = image*smoothstep(left,left+blurr,uv.x);
 image = image*smoothstep(right,right-blurr,uv.x); 
 image = image*smoothstep(bottom,bottom+blurr,uv.y);
 image = image*smoothstep(top,top-blurr,uv.y);
 }
 
 
 
 gl_FragColor = image;
}

[mark]

@hairi

At risk of not adding substance to the conversation, it just made me happy to see someone sharing GLSL code. Highlike.

Best Wishes,
Mark

[anibalzorrilla]

@skulpture Thanks a lot, Graham! Best regards.

[Skulpture]

@anibalzorrilla said:

@skulpture Thanks a lot, Graham! Best regards.

 Welcome. I should make some more shapes really.... I slightly neglected this thread. 

[tomthebom]

@skulpture

Or a tutorial how to add textures and export shapes from Blender, which is free. 2.7.9 still exports to 3ds, 2.8 makes problems exporting to 3ds. That would be such a treat! Kind regards, Tom

[Skulpture]

@tomthebom said:

@skulpture
Or a tutorial how to add textures and export shapes from Blender, which is free. 2.7.9 still exports to 3ds, 2.8 makes problems exporting to 3ds. That would be such a treat! Kind regards, Tom

 Good shout. I might do that.

[bonemap]

@skulpture said:

2.8 makes problems exporting to 3ds.

 I am a big fan of the Blender 2.8 texture mapping tools. But I think you are right about not being able to create Isadora compatible 3ds files directly out of Blender. I use Cheetah 3D and MeshLab to condition the forms I make in Blender for use in Isadora. But it is still a better modelling and texturing experience to start the process using Blender 2.8.

Best wishes

Russell