Nglrender Grid In Perspective

[user_deleted]

Hi, I've just discovered that it is possible to use OpenGL in Shake (the more I get to know Shake the more I love it) and I want to make a 3D grid that matches the Move3D movement of a character, sort of a virtual set but very basic.

After browsing the forum for a while I came up with a macro for a grid but I can't give it any perspective, i am using nglVertex3f points to draw the lines but the z attribute doesn't seem to affect the perspective of the lines.

I found allmost no information, of all the macros I've checked only Julien's macro for importing OBJ files uses 3d vertex. Can anyone point me in the right direction? Any macro i can check?

I've read about some Emannuel folk that seems to be an eminence on OpenGL and Shake, but I couldn't find any of his macros, can anyone give some links.

Thanks

Any help apreciated.

Here's my macro sketch:

image GridGL(

image In=0,
float value=1,
float width = GetDefaultWidth(),
float height = GetDefaultHeight(),

int pointSize = 2,
int gridSize = 100,

int timesX = 5,
int timesY = 10,

float red = 0,
float green = 1,
float blue = 0,
float alpha = 1
)
{

int x1 = 10;
int x2 = 20;



int planeWidth = width * timesX;
int planeHeight = height * timesY;


guides = NGLRender(width, height, 1, "
    nglColor4f(red, green, blue, alpha);

    int yStart = -width;
    int yEnd = width*4;

    int xStart = 10;
    int xEnd = planeHeight;

    nglMatrixMode(NGL\_PROJECTION);
    nglPushMatrix();
    //nglPerspective(126.0, 1.0, 100.0, 0.0, 1000.0, (float)(height/2));
    //Draw vertical lines
    for (int i = yStart; i < yEnd; i += gridSize) {

      nglBegin(NGL\_LINES);
      nglPointSize(pointSize);    

      nglVertex3f(yStart+i, 0, 0);
      nglVertex3f(yStart+i, xEnd, 0);

      nglEnd();
    
    };
    

    int zHorizontal = 0;
    int hPerspective = 100;
    
    //Draw horizontal lines
    for (float j = xStart; j < xEnd; j += gridSize) {
      
      
   
      zHorizontal += hPerspective;
      
      nglBegin(NGL\_LINES);
      nglPointSize(pointSize);    

      nglVertex3f(yStart, xStart+j, zHorizontal);
      nglVertex3f(yEnd, xStart+j, 0);

      nglEnd();

    };
    nglPopMatrix();
"
);

return guides;

}

[deke-kincaid]

The shake sdk comes with an example plugin you can compile that allows you to import obj files.

Also, why are you using move3d instead of multiplane? Move3d is pretty limited.

[user_deleted]

Thanks for the answer, well I am not really interested in getting to much into openGL or the shake SDK or compiled code, the macro by Julien Stiegler for importing OBJ files is allready far too complicated for me.
I would like to check simple macros that use NGLRender and nglVertex3f fuctions, my understanding of openGL is very basic but in Jitter I could easily create lines an poligons in a 3D space using 3D points that's why I don't understand why when I define my nglVertex3f(x, y, z) the z position makes no diference in the result.

I didn't use multiplane because is not part of the basic Shake toolset and if is macro I haven't digged it, I am not an experienced Shake composer, I did my own multiplane node using several Move3D nodes for a music video I am working on.

So I am still looking for some pointers.

thanks

[deke-kincaid]

Multiplane is part of the basic shake toolset. It's in the layer panel and is a full 3d camera instead of the half assed one in move3d. You can import camera's out of maya saved in the .ma file format.

[user_deleted]

Thanks I must overlooked, I am not too experienced, I thought the node would be in the transform panel and I didn't find it there, I will have to wait to use it because I allredy have a lot of work done using 3DMove, too bad I didn't knew this earlier, I still have to go thrugh all of the tutorials.

Thanks