If all you want to do is find 2D screen locations from 3D locations its easy if you know similar triangles. No triggers are required. just make up some variable that is about the distance in pixels out of the screen to your eyes – call that the focal_length. You can adjust that figure to … Read more
Probably the “mesh” is the one that will do for you. See the documentation for this for more, but you can try: x=linspace(….);y=… [x,y]=meshgrid(x,y); z= x^2 – 4*x + y^2 – y – x.*y mesh(x,y,z) solved What can I use MATLAB function “Plot3D”? [closed]
It was a simple solution. I code it myself: jsfiddle.net/mnfsgxbh/4/ solved Letter head date curve using css
You can check out this tutorial: http://www.codeproject.com/Articles/20286/GLUI-Window-Template#_articleTop or You can look at mine I did for a school project. https://github.com/sitting-duck/stuff/tree/master/School%20-%20Comp%20Sci/Computer%20Animation%20-%20Fall%202014/Assn1%20-%20Transformations/assn1%20redo/assn1 In this version I just use key bindings to initiate the transformations. Will be easier than making a GUI, so I did that first to learn how to get the transformation code all working, when … Read more
Actually there are many solutions if you search in Google. Here is one simple solution as below. First define one model containing face and vertex info: class obj3dmodel { struct vertex{ double x; double y; double z; }; struct face{ unsigned int v1,v2,v3; }; std::vector<vertex> vetexes; std::vector<face> faces; public: void readfile(const char* filename); void draw(); … Read more
You should call glutSwapBuffers only once in the drawing function. For an animation you have to call glutPostRedisplay, to ensure that the display function will be called again. The glBegin and glEnd calls only have to be called once per circle. In the for loop you just supply vertices with calls to glVertex. To simplify … Read more
I finally find out what was wrong here’s my new code import vtk import numpy as np import os import matplotlib.pyplot as plt import PIL import Image DEBUG =False directory=”splitted_mri/” l = [] k=0 #add the next picture in a differente level of depth/z-positions for file in os.listdir(directory): img = directory + file if DEBUG … Read more
Your link does not work. WebglRenderer is allways faster than CanvasRenderer, but is not supported on all Browsers. See overview here: http://caniuse.com/webgl solved Three.js and WebGL
You rotate single point using rotation matrix. http://en.wikipedia.org/wiki/Rotation_matrix so it end up using matrix multiply eqations. v’ = R * v Where v is point as vector in Cartesian coordinates, R is rotation matrix and v’ is new point. You have to apply this multiplication for each point. 0 solved How can I find out … Read more
Express that the center of the sphere is equidistant to the three given points and coplanar with them (assuming that the three given points are on a great circle). (X – Xa)² + (Y – Ya)² + (Z – Za)² = R² (X – Xb)² + (Y – Yb)² + (Z – Zb)² = R² … Read more
I think you are looking for ray picking or ray intersection. This answer has a link to a iOS sample/video which I believe is what you are after. https://gamedev.stackexchange.com/questions/12360/how-do-you-determine-which-object-surface-the-users-pointing-at-with-lwjgl/12367#12367 Another related SO question: Implementing Ray Picking That should get you started on what you need to do. 1 solved How to make each component of … Read more