3d

How to calculate azimut & elevation relative to a camera direction of view in 3D …?

荒凉一梦 提交于 2020-08-25 07:45:45
问题 I'm rusty a bit here. I have a vector (camDirectionX, camDirectionY, camDirectionZ) that represents my camera direction of view. I have a (camX, camY, camZ) that is my camera position. Then, I have an object placed at (objectX, objectY, objectZ) How can I calculate, from the camera point of view, the azimut & elevation of my object ?? 回答1: The first thing I would do, to simplify the problem, is transform the coordinate space so the camera is at (0, 0, 0) and pointing straight down one of the

How does an operating system draw windows on the screen?

扶醉桌前 提交于 2020-08-24 07:33:33
问题 I realized after many years of using and programming computers that the stack of software that actually draws on the screen is mostly a mystery to me. I have worked on some embedded LCD GUI applications and I think that provides some clues as to a simplified stack but the whole picture for something like the Windows operating system is still murky. From what I know: Lowest level 0 is electronic hardware (integrated circuits) that provide a digital interface to turn a pixel on the screen a

4 Element Vector (3D Math)

不打扰是莪最后的温柔 提交于 2020-08-22 04:43:13
问题 Why is there a W term in a lot of 3D API's Vector class (i.e. Vector4(x, y, z, w) ) ? Are there math operations that absolutely require the W term? 回答1: This is a special representation of a point in 3D space, called homogeneous coordinates . They are just another way to describe a point in 3D space. They are used a lot in 3D graphics because they have a few advantages: they make some formulas simpler, and they allow you to represent a "point at infinity" (or "line at infinity" etc. depending

How can I create a 4D complex surface plot? [closed]

依然范特西╮ 提交于 2020-08-20 11:29:48
问题 Closed . This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 21 days ago . Improve this question I have the following Matlab code that I would like to be converted to a Python 3 one. r = (0:1:15)'; % create a matrix of complex inputs theta = pi*(-2:0.05:2); z = r*exp(1i*theta); %w = z.^(1/2) ; % calculate the complex outputs w = sqrt(r)*exp(1i*theta/2);

How to jump in Unity 3d?

守給你的承諾、 提交于 2020-08-17 11:59:06
问题 can anyone share with me a script that I could use for jumping of the character for this script? I would greatly appreciate it, I'm 12 and just starting, it would help me to finish my project. Thank you in advance. 回答1: I would recommend starting with some of the courses on their website (http://unity3d.com/learn ),but to answer your question the following is a general script that would work. using UnityEngine; using System.Collections; [RequireComponent(typeof(Rigidbody))] public class