Threejs remove background area from elliptical cylinder
I have this code that draws an elliptical cylinder, and want to remove the background part and only keep the front half of the elliptical cylinder.. How to go about? setupEllipticShape() { // depths const yRadiusTop = 0.5; const yRadiusBottom = 0.5; // 1.6 const xRadiusTop = this.BOX_DIMENSIONS.value.topWidth; // 1.2 const xRadiusBottom = this.BOX_DIMENSIONS.value.bottomWidth; //