ericrosenbaum
new primitives
How to make pyramids in Three.js: http://stackoverflow.com/a/26436728/599939
Some examples including a cone, a truncated cone and a pyramid: https://stemkoski.github.io/Three.js/Shapes.html
In particular, we do have THREE.TetrahedronGeometry, and applying scale transformations to it would give us any kind of pyramid.
As for cones, they're just particular cases of cylinders: new THREE.CylinderGeometry( 0, 30, 100, 20, 4 ), and truncating them is also a particular case:
// radiusAtTop, radiusAtBottom, height, segmentsAroundRadius, segmentsAlongHeight,
new THREE.CylinderGeometry( 10, 30, 100, 20, 4 )
Wedges are different animals, I believe the easiest way would be to build them out of simple triangle extrusions.
Ok, and here's the wedge:
Process.prototype.wedge = function(length, width, height, type) {
// Change positions according to width, height and type
var triangleShape = new THREE.Shape();
shape.moveTo(8, 2);
shape.lineTo(4, 8);
shape.lineTo(12, 8);
shape.lineTo(8, 2);
// The rest is already correct:
var wedgeGeometry = new THREE.ExtrudeGeometry( triangleShape, { amount: length, steps: 1} );
var mesh = new THREE.Mesh(wedgeGeometry, beetle.makeMaterial());
mesh.position.copy(beetle.position);
mesh.rotation.copy(beetle.rotation);
// Missing the usual reRender() etc.
[ ... ]
};
A wedge implementation: http://beetleblocks.com/run/#present:Username=bromagosa&ProjectName=wedge
Interesting general case. I would have added a let/right menu pulldown. It also does not comply with the centroid we usually have...
