three.js : How to change a parameter of a CylinderGeometry after its instantiation
1
So I have a cylinder with this geometry:
var geometry = new THREE.CylinderGeometry( 5, 5, 9, nbVertices, 0, true, Math.PI, 2*Math.PI );
The last parameter is the thetaLength property. At some point, I want to change its value later on my website. But when I update it like this:
cylinder.geometry.parameters.thetaLength = newValue;
renderer.render(scene, camera);
Nothing seems to change. Plus I can read this on the THREE.JS documentation:
Any modification after instantiation does not change the geometry.
Does anyone knows if there's a way to force this modification? Thank you very much.
javascript three.js
asked Nov 23 '18 at 4:21
Michaël GarciaMichaël Garcia
3810
add a comment |
1
So I have a cylinder with this geometry:
var geometry = new THREE.CylinderGeometry( 5, 5, 9, nbVertices, 0, true, Math.PI, 2*Math.PI );
The last parameter is the thetaLength property. At some point, I want to change its value later on my website. But when I update it like this:
cylinder.geometry.parameters.thetaLength = newValue;
renderer.render(scene, camera);
Nothing seems to change. Plus I can read this on the THREE.JS documentation:
Any modification after instantiation does not change the geometry.
Does anyone knows if there's a way to force this modification? Thank you very much.
javascript three.js
asked Nov 23 '18 at 4:21
Michaël GarciaMichaël Garcia
3810
1
Why not just recreate it?
– Dacre Denny
Nov 23 '18 at 4:54
@DacreDenny, thanks for your answer, I want to animate it, so I'm using the requestAnimationFrame function. I was telling myself it would kind of heavy to delete my cylinder from my scene and recreate it at every frame, don't you think ?
– Michaël Garcia
Nov 23 '18 at 5:23
1
It depends, if you're only recreating a few of these per frame then you might find this is workable?
– Dacre Denny
Nov 23 '18 at 5:43
1
Not such a big deal for your system to re-build geometry on every frame: threejs.org/examples/?q=mem#webgl_test_memory Of course, if there are not so many objects in a scene.
– prisoner849
Nov 23 '18 at 12:40
This is perfect, I want to validate one comment to close this topic, how can I do that ? thanks again
– Michaël Garcia
Nov 30 '18 at 6:10
add a comment |
1
1
1
So I have a cylinder with this geometry:
var geometry = new THREE.CylinderGeometry( 5, 5, 9, nbVertices, 0, true, Math.PI, 2*Math.PI );
The last parameter is the thetaLength property. At some point, I want to change its value later on my website. But when I update it like this:
cylinder.geometry.parameters.thetaLength = newValue;
renderer.render(scene, camera);
Nothing seems to change. Plus I can read this on the THREE.JS documentation:
Any modification after instantiation does not change the geometry.
Does anyone knows if there's a way to force this modification? Thank you very much.
javascript three.js
asked Nov 23 '18 at 4:21
Michaël GarciaMichaël Garcia
3810
So I have a cylinder with this geometry:
var geometry = new THREE.CylinderGeometry( 5, 5, 9, nbVertices, 0, true, Math.PI, 2*Math.PI );
The last parameter is the thetaLength property. At some point, I want to change its value later on my website. But when I update it like this:
cylinder.geometry.parameters.thetaLength = newValue;
renderer.render(scene, camera);
Nothing seems to change. Plus I can read this on the THREE.JS documentation:
Any modification after instantiation does not change the geometry.
Does anyone knows if there's a way to force this modification? Thank you very much.
javascript three.js
javascript three.js
asked Nov 23 '18 at 4:21
Michaël GarciaMichaël Garcia
3810
asked Nov 23 '18 at 4:21
Michaël GarciaMichaël Garcia
3810
edited Nov 23 '18 at 4:30
Michaël Garcia
asked Nov 23 '18 at 4:21
Michaël GarciaMichaël Garcia
3810
asked Nov 23 '18 at 4:21
Michaël GarciaMichaël Garcia
3810
asked Nov 23 '18 at 4:21
Michaël GarciaMichaël Garcia
3810
3810
1
Why not just recreate it?
– Dacre Denny
Nov 23 '18 at 4:54
@DacreDenny, thanks for your answer, I want to animate it, so I'm using the requestAnimationFrame function. I was telling myself it would kind of heavy to delete my cylinder from my scene and recreate it at every frame, don't you think ?
– Michaël Garcia
Nov 23 '18 at 5:23
1
It depends, if you're only recreating a few of these per frame then you might find this is workable?
– Dacre Denny
Nov 23 '18 at 5:43
1
Not such a big deal for your system to re-build geometry on every frame: threejs.org/examples/?q=mem#webgl_test_memory Of course, if there are not so many objects in a scene.
– prisoner849
Nov 23 '18 at 12:40
This is perfect, I want to validate one comment to close this topic, how can I do that ? thanks again
– Michaël Garcia
Nov 30 '18 at 6:10
add a comment |
1
Why not just recreate it?
– Dacre Denny
Nov 23 '18 at 4:54
@DacreDenny, thanks for your answer, I want to animate it, so I'm using the requestAnimationFrame function. I was telling myself it would kind of heavy to delete my cylinder from my scene and recreate it at every frame, don't you think ?
– Michaël Garcia
Nov 23 '18 at 5:23
1
It depends, if you're only recreating a few of these per frame then you might find this is workable?
– Dacre Denny
Nov 23 '18 at 5:43
1
Not such a big deal for your system to re-build geometry on every frame: threejs.org/examples/?q=mem#webgl_test_memory Of course, if there are not so many objects in a scene.
– prisoner849
Nov 23 '18 at 12:40
This is perfect, I want to validate one comment to close this topic, how can I do that ? thanks again
– Michaël Garcia
Nov 30 '18 at 6:10
1
1
Why not just recreate it?
– Dacre Denny
Nov 23 '18 at 4:54
Why not just recreate it?
– Dacre Denny
Nov 23 '18 at 4:54
@DacreDenny, thanks for your answer, I want to animate it, so I'm using the requestAnimationFrame function. I was telling myself it would kind of heavy to delete my cylinder from my scene and recreate it at every frame, don't you think ?
– Michaël Garcia
Nov 23 '18 at 5:23
@DacreDenny, thanks for your answer, I want to animate it, so I'm using the requestAnimationFrame function. I was telling myself it would kind of heavy to delete my cylinder from my scene and recreate it at every frame, don't you think ?
– Michaël Garcia
Nov 23 '18 at 5:23
1
1
It depends, if you're only recreating a few of these per frame then you might find this is workable?
– Dacre Denny
Nov 23 '18 at 5:43
It depends, if you're only recreating a few of these per frame then you might find this is workable?
– Dacre Denny
Nov 23 '18 at 5:43
1
1
Not such a big deal for your system to re-build geometry on every frame: threejs.org/examples/?q=mem#webgl_test_memory Of course, if there are not so many objects in a scene.
– prisoner849
Nov 23 '18 at 12:40
Not such a big deal for your system to re-build geometry on every frame: threejs.org/examples/?q=mem#webgl_test_memory Of course, if there are not so many objects in a scene.
– prisoner849
Nov 23 '18 at 12:40
This is perfect, I want to validate one comment to close this topic, how can I do that ? thanks again
– Michaël Garcia
Nov 30 '18 at 6:10
This is perfect, I want to validate one comment to close this topic, how can I do that ? thanks again
– Michaël Garcia
Nov 30 '18 at 6:10
add a comment |
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1
Why not just recreate it?
– Dacre Denny
Nov 23 '18 at 4:54
@DacreDenny, thanks for your answer, I want to animate it, so I'm using the requestAnimationFrame function. I was telling myself it would kind of heavy to delete my cylinder from my scene and recreate it at every frame, don't you think ?
– Michaël Garcia
Nov 23 '18 at 5:23
1
It depends, if you're only recreating a few of these per frame then you might find this is workable?
– Dacre Denny
Nov 23 '18 at 5:43
1
Not such a big deal for your system to re-build geometry on every frame: threejs.org/examples/?q=mem#webgl_test_memory Of course, if there are not so many objects in a scene.
– prisoner849
Nov 23 '18 at 12:40
This is perfect, I want to validate one comment to close this topic, how can I do that ? thanks again
– Michaël Garcia
Nov 30 '18 at 6:10