Specific line will not render?

Projective GA
1

Hi Guys… Great tool and appreciate all the work you have put into it… amazing!

Using the source below, line l1 will not display, although its associated tag will display?
Am I missing some basic principle of Clifford PGA ?

The other thing I dont understand is that when l2 renders, it does not appear to go through the two points used to create it in a join function. Am I missing some key concept here??

Algebra(3,0,1,()=>{

  var point      = (x,y,z)=>!(1e0 + x*1e1 + y*1e2 + z*1e3),
      join       = (p1,p2)=>p1&p2;

  var P1 = point(0,0,1),  P2 = point(1,1,0),
      P3 = point(1,0,1),  P4 = point(2,1,0);

  var l1 = join( P1,P2 ),
      l2 = join( P3,P4 );
    
  document.body.appendChild(this.graph(()=>{
    return [
      "Why Line l1 Won't render??s",
      0xFF0000,l1,"Where is line l1?",l2,"l2 Ref orthog line", // Text renders in about correct place?
    ];
  },{grid:true, labels:true,lineWidth:3, h:-0.4, p:-0.05, scale:1.01, animate:true}));

});
2

I am just another user, but I note that in my code, I use
return this.graph(()=>{
instead of your document.bodu construction, and that works.

3

Hi Leo, thanks for the idea. Frankly… I would consider you more than just another user!! I’ve looked at some of your pages to see if I was doing this correctly. I tried variations of the following but it would only render a blank page with no errors showing in the browser?

    Algebra(3,0,1,()=>{

      var point = (x,y,z)=>!(1e0 + x*1e1 + y*1e2 + z*1e3),
          join  = (p1,p2)=>p1&p2;

      var P1 = point(0,0,1),
          P2 = point(1,1,0),
          P3 = point(1,0,1),
          P4 = point(2,1,0);

      var l1 = join( P1,P2 ),
          l2 = join( P3,P4 );

      return this.graph(()=>{
        return [
          "Why won't line l1 render??",
          0xFF0000,l1,"Where is line l1?",l2,"l2 Ref to show parallel line works", // l1 Text renders in about the correct place?
        ];
      },{grid:true, labels:true,lineWidth:3, h:-0.4, p:-0.05, scale:1.01, animate:true});
    })

I just find it confusing why ony the line in that particular axis fails to render?

Any other thoughts would be most appreciated.

4

Hi,

That looks like a bug. I’ll look into it ASAP.

Steven

1 Like