collision-detection

问题 Given two point clouds such that one point cloud is static whereas other is mobile obstacle. We want to move the mobile point cloud obstacle in space and note down whether it is intersecting with the static point cloud at that position. Is there a function available in PCL to do this automatically or do we have to write our own function to do the same? 回答1: The fcl (Flexible Collision Library) library can do fast collision detection. Here are the supported different object shapes: sphere box

问题 So im almost at the end of my school homework project im just missing two major things i can't seem to figure out: 1.How to spawn the pipe obstacles with a random position for the gap so the bird can fly through (tought of using a function which changes the css 'right' attr of the pipe div for the gap position), and removing the pipe when it goes off screen bottom . (Its a inverted flappy bird game like btw..) 2.Second i need a help with the collision detection function so i know when game is

问题 The collision is not working According to that post Collision detection between 2 "linearly" moving objects in WGS84, I have the following data EDIT: I have updated the data for a collision that should occur in 10 seconds. m_sPosAV = {North=48.276111971715515 East=17.921031349301817 Altitude=6000.0000000000000 } Poi_Position = {North=48.806113707277042 East=17.977161602106488 Altitude=5656.0000000000000 } velocity.x = -189.80000000000001 // m/s velocity.y = -39.800000000000004 // m/s velocity

问题 Trying to get two balls to collide and bounce back at appropriate angles. When the balls collide however they get stuck together and I have no idea what I'm doing wrong here. I'm calling this checkCollision() function within my animate function Obviously cx is ball1 xpos , cx2 is ball2 xpos . Same for cy . function checkCollision () { var dx = cx2 - cx; // distance between x var dy = cy2 - cy; // distance between y var distance = Math.sqrt(dx * dx + dy * dy); if (distance < (radius1 + radius2

问题 I am using unityscript and I have no idea why but the OnCollisionEnter Function never calls, even when logging it in unity3d. Is there an alternative or a reason why this is happening? By the way I am trying to use this collision detection function to find out if the Main Camera is touching a wall or anything.done This is exactly what I have done: I created a unityscript file. I replaced all the contents with just: function OnCollisionEnter(theCollision : Collision) { Debug.Log("Hit"); } Now

问题 I'm trying to detect collision on two object inside my scene:show function This is my first set of objects which have a collision listener on it for i = 1, table.maxn(layout.playgrid) do physics.addBody( leftholes[i], "static" ) sceneGroup:insert(3,leftholes[i]) leftholes[i].name = "hole" leftholes[i]:addEventListener( "collision", lis ) physics.addBody( rightholes[i], "static") sceneGroup:insert(3,rightholes[i]) rightholes[i].name = "hole" rightholes[i]:addEventListener( "collision", lis )

问题 I have a map im creating in python using pygame with a player and walls: import pygame x = 25 y = 19 collision = [ [0,0,0,37],#vertical [4,23,4,27], [12,18,12,25], [13,0,13,1], [13,4,13,7], [13,10,13,11], [15,13,15,18], [15,23,15,37], [19,0,19,13], [29,25,29,26], [29,29,29,37], [35,0,35,9], [35,12,35,17], [35,21,35,26], [35,29,35,37], [36,17,36,21], [44,0,44,6], [44,10,44,17], [54,0,54,17], [0,0,19,0],#horizontal [35,0,46,0], [52,0,54,0], [13,5,19,5], [19,6,24,6], [30,6,35,6], [0,13,10,13],

问题 In my game, the player navigates a maze. I can't figure out how to do proper collision detection with the walls. It is easy to do collision detection for staying in a certain area: if (x > rightWallX - playerWidth) x = rightWallX - playerWidth; if (x < leftWallX) x = leftWallX; //... But how would I do collision detection for many walls? I can do plain collision detection without correction (like if (intersecting) return true; ), but I can't correct this correctly. If I just store the old x

问题 I'm building a sprite kit game in swift and I need the score to increase by 1 when collision between 2 nodes is detected. The score is stored in a variable named animalsCount and is outputted to a label node: //Score count in stats bar //Animal score count animalsCount = 0 animalsCountLabel.text = "\(animalsCount)" animalsCountLabel.fontSize = 45 animalsCountLabel.fontColor = SKColor.blackColor() animalsCountLabel.position = CGPoint (x: 630, y: 40) addChild(animalsCountLabel) The two sprite

问题 I have faced a little problem with my pacman movement that i'm working on right now. I can't seem to find a way to make the movement similar to the originated pacman movement. In order to explain how i want it to move, i have uploaded this picture. As it stand now, i have made the collision working between the yellow rectangle and the blue walls. The problem is when i move to the left as in the picture and i click the up arrow, it should not stop, but continue to move and then go up when