Blog

Como os gráficos de trading são feitos: os grandes produtos, lidos em sua documentação pública, e os problemas que encontramos ao construir o TradeCanvas.

Os artigos são escritos em inglês.

Engenharia8 min de leitura

Adding WebGL to a Canvas 2D chart: the GPU was not the slow part

What we measured while giving TradeCanvas a WebGL renderer. A blend per canvas every frame, a stencil buffer nobody used, 19,200 rectangles, float32 rounding and a browser that quietly drops the sixteenth context.

Engenharia8 min de leitura

Drawing where there are no bars yet: Ichimoku's cloud

Ichimoku plots its cloud 26 bars ahead of the price, where a chart has no bars, no times and no values. For a while TradeCanvas drew it under the price instead. What it took to put it where it belongs.

Engenharia5 min de leitura

Price tags that never cover each other

A trading chart puts a dozen tags on its price axis, and the interesting ones sit at the same price. How TradeCanvas lays them out so each stays readable, and the bugs that taught us where else they collide.