Is it possible to reverse the orientation of texture mapping on a CylinderGeometry object?
var obj = new THREE.Mesh(
new THREE.CylinderGeometry(20, 15, 1, 20),
new THREE.MeshLambertMaterial({color: 0x000000}) //the material is later changed to the correct
);
Your assistance in this matter would be greatly appreciated. Thank you!
This custom function is effective:
var invertTextureOnCylinderGeometry = function(obj) {
var faceVertexes = obj.geometry.faceVertexUvs[0];
var faceVertexesLength = faceVertexes.length;
var divisionT = 1 / (faceVertexesLength * 0.25);
faceVertexes.map(function(face, index) {
if (index < 0.5*faceVertexesLength) {
var thisIndexDivision = [
Math.floor(index/2) * divisionT,
Math.ceil((index+divisionT)/2) * divisionT
];
if (index % 2) {
face[0].set(1, thisIndexDivision[0]);
face[1].set(1, thisIndexDivision[1]);
face[2].set(0, thisIndexDivision[1]);
} else {
face[0].set(0, thisIndexDivision[0]);
face[1].set(1, thisIndexDivision[0]);
face[2].set(0, thisIndexDivision[1]);
}
}
});
obj.geometry.uvsNeedUpdate = true;
};
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