File: SampleSphere.m

package info (click to toggle)
psychtoolbox-3 3.0.14.20170103%2Bgit6-g605ff5c.dfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 103,044 kB
  • ctags: 69,483
  • sloc: ansic: 167,371; cpp: 11,232; objc: 4,708; sh: 1,875; python: 383; php: 344; makefile: 207; java: 113
file content (25 lines) | stat: -rw-r--r-- 490 bytes parent folder | download | duplicates (7) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
 
function units = sampleSphere(nTheta,nPhi)
% units = sampleSphere(nTheta,nPhi)
%
% Sample points on a sphere.%
% 
% 8/3/96  dhb  Added this comment.

deltaT = 2*pi/nTheta;
deltaP = pi/nPhi;

iT = 0;
iP = -pi/2;

units = zeros(3,nTheta*nPhi);
index = 1;
for i = 0:nTheta-1
  theta = iT + i*deltaT;
  for j = 0:nPhi-1
    phi = iP + j*deltaP;
    units(1,index) = cos(phi)*cos(theta);
    units(2,index) = cos(phi)*sin(theta);
    units(3,index) = sin(phi);
    index = index + 1; 
  end
end