mbailen
commented
6 years ago I got this. . . the 3D stuff works well with bezier curves. Here is an ellipse function and a draw function. I can explain more if somebody is interested. . .
function ellipse(ellipses, options, point, angles){
for (var i = ellipses.length - 1; i >= 0; i--) {
var ell = ellipses[i];
var p1 = ell[0]; //start
var p2 = ell[1]; //ctrl pt 1
var p3 = ell[2]; //ctrl pt 2
var p4 = ell[3]; //end
var p5 = ell[4]; //ctrl pt 3
var p6 = ell[5]; //ctrl pt 4
p1.rotated = rotateRzRyRx({x : point.x(p1), y : point.y(p1), z : point.z(p1)}, angles);
p2.rotated = rotateRzRyRx({x : point.x(p2), y : point.y(p2), z : point.z(p2)}, angles);
p3.rotated = rotateRzRyRx({x : point.x(p3), y : point.y(p3), z : point.z(p3)}, angles);
p4.rotated = rotateRzRyRx({x : point.x(p4), y : point.y(p4), z : point.z(p4)}, angles);
p5.rotated = rotateRzRyRx({x : point.x(p5), y : point.y(p5), z : point.z(p5)}, angles);
p6.rotated = rotateRzRyRx({x : point.x(p6), y : point.y(p6), z : point.z(p6)}, angles);
p1.projected = options.project(p1.rotated, options);
p2.projected = options.project(p2.rotated, options);
p3.projected = options.project(p3.rotated, options);
p4.projected = options.project(p4.rotated, options);
p5.projected = options.project(p5.rotated, options);
p6.projected = options.project(p6.rotated, options);
ellipse.centroid = centroid([ell[0],ell[3]]);
}
return ellipses;
}
function drawEllipse(d){ return 'M' + d[0].projected.x + ' ' + d[0].projected.y + ' C ' + d[1].projected.x + ' ' + d[1].projected.y +\ ',' + d[2].projected.x + ' ' + d[2].projected.x + ',' + d[3].projected.x + ' ' + d[3].projected.y + ' C ' + d[4\ ].projected.x + ' ' + d[4].projected.y + ',' + d[5].projected.x + ' ' + d[5].projected.y + ',' + d[0].projected.\ x + ' ' + d[0].projected.y; }
Niekes
Just started playing with your code. It's great. Is there a simple way to add ellipses (ovals) with what you have? I was thinking of adding a new "draw" type?
Thanks!