8d8c3ebd
 David Mayerich
initial commit tr...
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template<typename T>
std::vector< stim::vec3<T> > simage(T size, std::string imagefile) {
std::vector< stim::vec3<T> > sources;
stim::image<unsigned char> src(imagefile);
float xmin = -size / 2;
float ymin = -size / 2;
size_t xi, yi;
float xa, ya;
for (yi = 0; yi < src.height(); yi++) {
for (xi = 0; xi < src.width(); xi++) {
if (src(xi, yi)) {
xa = (float)xi / (float)(src.width() - 1);
ya = (float)yi / (float)(src.height() - 1);
sources.push_back(stim::vec3<float>(xa * size + xmin, ya * size + ymin, 0));
}
}
}
return sources;
}
template<typename T>
std::vector< stim::vec3<T> > sgrid(T size, unsigned int n, unsigned int m = 0) {
std::vector< stim::vec3<T> > sources;
if (m == 0) m = n;
float xmin = -size / 2 + size/(n + 1);
float ymin = -size / 2 + size/(m + 1);
size_t xi, yi;
float xa, ya;
for (yi = 0; yi < m; yi++) {
for (xi = 0; xi < n; xi++) {
xa = (float)xi / (float)(n + 1);
ya = (float)yi / (float)(m + 1);
sources.push_back(stim::vec3<float>(xa * size + xmin, ya * size + ymin, 0));
}
}
return sources;
}
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