aabb

How to recalculate axis-aligned bounding box after translate/rotate?

由 Deadly 提交于 2019-11-27 21:12:50
问题 When I first load my object I calculate the initial AABB with the max and min (x,y,z) points. But this is in object space and the object moves around the world and more importantly, rotates. How do I recalculate the new AABB every time the object is translated/rotated? This happens basically every frame, is it going to be a very intensive operation to recalculate the new AABB every frame? If so, what would be the alternative? I know AABBs will make my collision detection less accurate but it

What is AABB - Collision detection?

由 流过昼夜 提交于 2019-11-27 07:23:58
Hi I'm making a voxel game in Java and while researching all the different things I'd need to learn, I noticed that a lot of games use AABB for collision detection. And then I remembered seeing AABB in Minecraft also. But when I google what AABB is, it only comes up with other peoples code, or some organization out the history book. Stackoverflow, what is AABB ? jwd AABB stands for " Axis-Aligned Bounding Box ." It is a fairly computationally- and memory-efficient way of representing a volume, typically used to see if two objects might be touching. Since it is axis-aligned, it does not

Rotate image and crop out black borders

由 纵然是瞬间 提交于 2019-11-26 19:25:57
My application: I am trying to rotate an image (using OpenCV and Python) At the moment I have developed the below code which rotates an input image, padding it with black borders, giving me A. What I want is B - the largest possible area crop window within the rotated image. I call this the axis-aligned boundED box. This is essentially the same as Rotate and crop , however I cannot get the answer on that question to work. Additionally, that answer is apparently only valid for square images. My images are rectangular. Code to give A: import cv2 import numpy as np def getTranslationMatrix2d(dx,

What is AABB - Collision detection?

由 这一生的挚爱 提交于 2019-11-26 13:01:33
问题 Hi I\'m making a voxel game in Java and while researching all the different things I\'d need to learn, I noticed that a lot of games use AABB for collision detection. And then I remembered seeing AABB in Minecraft also. But when I google what AABB is, it only comes up with other peoples code, or some organization out the history book. Stackoverflow, what is AABB ? 回答1: AABB stands for "Axis-Aligned Bounding Box." It is a fairly computationally- and memory-efficient way of representing a

Rotate image and crop out black borders

由 这一生的挚爱 提交于 2019-11-26 06:57:44
问题 My application: I am trying to rotate an image (using OpenCV and Python) At the moment I have developed the below code which rotates an input image, padding it with black borders, giving me A. What I want is B - the largest possible area crop window within the rotated image. I call this the axis-aligned boundED box. This is essentially the same as Rotate and crop, however I cannot get the answer on that question to work. Additionally, that answer is apparently only valid for square images. My
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