huww98/TimeChart

interpolation line

temaivanoff opened this issue · 6 comments

temaivanoff commented

Hi, how hard is it to do?

huww98 commented

I would consider this out of the scope of this project. Drawing curves with WebGL is highly inefficient. chartjs uses canvas 2D, which supports curves natively.

temaivanoff commented

ok, performance will be greatly reduced? chart js very very very very slow one million points, just can't be used

huww98 commented

WebGL draws triangles, you can imagine how many triangles are needed to form a visually smooth curve.

temaivanoff commented

@huww98 ok, now I understand what the problem is. As I understand it, I only have points, lines and triangles at my disposal ?

huww98 commented

basically, you only have triangles. Although WebGL is capable of drawing points and lines, you cannot control the point size or line width. So I'm not using them in this project. All lines drawn by lineChart.ts are composed of triangles.