Currently working on r68, I'm in search of a modern example showcasing the creation of a rectangular pyramid that will allow me to implement THREE.MeshFaceMaterial(). Many existing examples are outdated and lead to errors with my current setup.
My requirements are simple:
Appreciate your help in advance!
The solution provided is effective for pyramids with equal sides at the base. However, if you require a pyramid with a rectangular base, you can follow these steps:
var geometry = new THREE.Geometry();
geometry.vertices = [
new THREE.Vector3( 0, 0, 0 ),
new THREE.Vector3( 0, 1, 0 ),
new THREE.Vector3( 1, 1, 0 ),
new THREE.Vector3( 1, 0, 0 ),
new THREE.Vector3( 0.5, 0.5, 1 )
];
geometry.faces = [
new THREE.Face3( 0, 1, 2 ),
new THREE.Face3( 0, 2, 3 ),
new THREE.Face3( 1, 0, 4 ),
new THREE.Face3( 2, 1, 4 ),
new THREE.Face3( 3, 2, 4 ),
new THREE.Face3( 0, 3, 4 )
];
You now have a pyramid geometry with a base of 1 x 1 and a height of 1. To adjust the dimensions to your desired width/length/height combination, apply a scaling matrix like this:
var transformation = new THREE.Matrix4().makeScale( width, length, height );
geometry.applyMatrix( transformation );
To simplify usage, encapsulate this process in a custom Pyramid geometry class as shown below:
new THREE.Pyramid( width, length, height );
Following the advice of @WestLangley, I used a THREE.CylinderGeometry() to achieve this result. Here is my approach:
const geometry = new THREE.CylinderGeometry(1, TILE_SIZE * 3, TILE_SIZE * 3, 4);
const material = new THREE.MeshBasicMaterial({ color: 0xffff00, wireframe: true });
const cylinder = new THREE.Mesh(geometry, material);
this.scene.add(cylinder);
The end result works flawlessly!
Try using ConeBufferGeometry with radialSegments set to 4
BufferGeometry offers improved performance compared to regular Geometry
You can also adjust the following parameters:
ConeBufferGeometry(radius : Float, height : Float, radialSegments : Integer, heightSegments : Integer, openEnded : Boolean, thetaStart : Float, thetaLength : Float)
See the outcome below:
https://i.sstatic.net/I2Pmj.png
Check out the Live Demo here:
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