fix: incorrect candlestick/ohlc width

cprice-scottlogic · chrisprice · commit 484d502c5398 · 2020-08-14T12:44:42.000+01:00
WebGL clip space ranges from -1 to 1 i.e. it is 2 units wide
diff --git a/packages/d3fc-webgl/src/series/candlestick.js b/packages/d3fc-webgl/src/series/candlestick.js
@@ -75,8 +75,8 @@ export default () => {
         lineWidth(program);
 
         program.vertexShader().appendBody(`
-          gl_Position.x += xModifier / uScreen.x;
-          gl_Position.y += yModifier / uScreen.y;
+          gl_Position.x += xModifier / uScreen.x * 2.0;
+          gl_Position.y += yModifier / uScreen.y * 2.0;
         `);
 
         decorate(program);
diff --git a/packages/d3fc-webgl/src/series/ohlc.js b/packages/d3fc-webgl/src/series/ohlc.js
@@ -87,8 +87,8 @@ export default () => {
         lineWidth(program);
 
         program.vertexShader().appendBody(`
-          gl_Position.x += xModifier / uScreen.x;
-          gl_Position.y += yModifier / uScreen.y;
+          gl_Position.x += xModifier / uScreen.x * 2.0;
+          gl_Position.y += yModifier / uScreen.y * 2.0;
         `);
 
         decorate(program);
