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Divide each plane of cube by its median without loop


Divide each plane of cube by its median without loop

By : user2954532
Date : November 22 2020, 10:31 AM
I think the issue was by ths following , You can pass a list of axes to np.median and then expand via None (np.newaxis):
code :
>>> cube = np.random.random(100000).reshape(10,100,100)
>>> simple = cube / np.median(cube,axis=[1,2])[:,None,None]
>>> 
>>> brute = cube.copy()
>>> for i in range(10):
...     brute[i, :, :] /= np.median(cube[i, :, :])
...     
>>> np.allclose(brute, simple)
True


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Three.js - Cube and sphere clipping strangely with plane

Three.js - Cube and sphere clipping strangely with plane


By : Nitesh
Date : March 29 2020, 07:55 AM
I wish this helpful for you This is a known limitation of CanvasRenderer.
You can reduce these artifacts by increasing the tessellation of your geometry -- particularly the plane.
code :
var floorGeometry = new THREE.PlaneGeometry( 1000, 1000, 10, 10 ); // will help
var cubeGeometry = new THREE.CubeGeometry( 50, 50, 50, 2, 2, 2 );  // may help
Irrlicht - Creating 3D plane/cube mesh

Irrlicht - Creating 3D plane/cube mesh


By : zecool adi
Date : March 29 2020, 07:55 AM
hope this fix your issue Your problem is that the camera and the plane both have the same Y coordinate. You never specified any position for the camera, so it is at the point (0, 0, 0), so its Y coordinate is 0. You also specified the coordinate of the plane to be (0, 0, 10), so its Y coordinate is also 0. Since the Y coordinate is up in Irrlicht, this means that you are looking at the plane from the slice like in this drawing:
code :
plane->setMaterialFlag(irr::video::EMF_LIGHTING, false);
driver->beginScene(true, true, irr::video::SColor(255, 255, 255, 255));
irr::IrrlichtDevice *device = irr::createDevice(irr::video::EDT_OPENGL);
irr::video::IVideoDriver *driver = device->getVideoDriver();
irr::scene::ISceneManager *sceneManager = device->getSceneManager();
const irr::scene::IGeometryCreator *geomentryCreator = sceneManager->getGeometryCreator();

irr::scene::IMesh* plane = geomentryCreator->createPlaneMesh(irr::core::dimension2d<irr::f32>(100, 100), irr::core::dimension2d<irr::u32>(100, 100));
irr::scene::ISceneNode* cube = sceneManager->addCubeSceneNode(20);
cube->render();

irr::scene::ISceneNode* ground = sceneManager->addMeshSceneNode(plane);
ground->setPosition(irr::core::vector3df(0, 0, 10));
plane->setMaterialFlag(irr::video::EMF_LIGHTING, false);    //This is important

irr::scene::ICameraSceneNode* cam = sceneManager->addCameraSceneNode();
cam->setPosition(irr::core::vector3df(0, 50, 0));    //This is also important
cam->setTarget(ground->getPosition());
sceneManager->addMeshSceneNode(plane);

while(device->run()){
    driver->beginScene(true, true, irr::video::SColor(255, 255, 255, 255));    //Important for the background to be white
    sceneManager->drawAll();
    driver->endScene();
}
Create a plane that trims cube Pyglet

Create a plane that trims cube Pyglet


By : user2528522
Date : March 29 2020, 07:55 AM
hop of those help? With Legacy OpenGL fixed function pipeline you can set a clipping plane.
There can be more than 1 clip plane and the planes have to be enabled by glEnable(GL_CLIP_PLANEi).
code :
plane = plane = [-1.0, -1.0, -1.0, -280]
ogl.glClipPlane(pgl.GL_CLIP_PLANE0, plane)
def on_draw(self) :

    self.clear()
    pgl.glClear(pgl.GL_COLOR_BUFFER_BIT | pgl.GL_DEPTH_BUFFER_BIT)

    pgl.glViewport(0, 0, 500, 500)

    pgl.glMatrixMode(ogl.GL_PROJECTION)
    pgl.glLoadIdentity()
    pgl.gluPerspective(45, 1, 1, 1000)

    pgl.glMatrixMode(ogl.GL_MODELVIEW)
    pgl.glLoadIdentity()
    pgl.glTranslatef(0, 0, -400)

    pgl.glPushMatrix()
    pgl.glTranslatef(self.x, self.y, self.z)
    pgl.glRotatef(self.xRotation, 1, 0, 0)
    pgl.glRotatef(self.yRotation, 0, 1, 0)
    pgl.glRotatef(self.zRotation, 0, 0, 1)
    pgl.glScalef(self.zoom, self.zoom, self.zoom)

    if not transparant:
        pgl.glPolygonMode(pgl.GL_FRONT_AND_BACK, pgl.GL_FILL)
    else:
        pgl.glPolygonMode(pgl.GL_FRONT_AND_BACK, pgl.GL_LINE)

    # set and enable clip plane
    plane = plane = [-1.0, -1.0, -1.0, -280]
    ogl.glEnable(pgl.GL_CLIP_PLANE0)
    ogl.glClipPlane(pgl.GL_CLIP_PLANE0, plane)

    draw_big()
    ogl.glDisable(pgl.GL_CLIP_PLANE0)

    pgl.glPopMatrix()
Distance to points on a cube and calculating a plane given a normal and a position

Distance to points on a cube and calculating a plane given a normal and a position


By : Ace8793
Date : March 29 2020, 07:55 AM
around this issue I have two questions that have been very lacking in answers on Google. , Second Question:
Say your vector is v=(x,y,z)
Projecting a cube onto a plane using matrix transformations and numpy

Projecting a cube onto a plane using matrix transformations and numpy


By : Andrew Noonan
Date : October 13 2020, 12:00 AM
fixed the issue. Will look into that further As @PaulPanzer pointed out, I was dotting the new vector from the wrong direction. The solution is
code :
np.dot(NE_1, NEW_SPACE)
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