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Merge branch 'main' into experimental

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PedroEdiaz
2024-12-04 13:22:05 -06:00
parent 6d1223d79e a08b17e975
commit ad4f5cb077
29 changed files with 870 additions and 983 deletions
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example/lens.c Normal file
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#include <math.h>
#include <stdio.h>
#define KLEIN_IMPLEMENT
#include <klein/klein.h>
#include <klein/norm.h>
#include <klein/parm.h>
int p = 37;
int q = 1;
void lens(float *d_surface, int *coord, unsigned char * grid)
{
float norm = 0;
float sphere[4];
for (int i = 0; i < 4; i++)
sphere[i] = ((float)coord[i] / grid[i]) - 0.5;
for(int i = 0; i < 4; i++)
norm += sphere[i] * sphere[i];
for (int i = 0; i < 4; i++)
sphere[i] = sphere[i] / sqrt(norm);
d_surface[0] = (sphere[0] * cos(2 * M_PI / p)) - (sphere[1] * sin(2 * M_PI / p));
d_surface[1] = (sphere[0] * sin(2 * M_PI / p)) + (sphere[1] * cos(2 * M_PI / p));
d_surface[2] = (sphere[2] * cos(2 * M_PI * q / p)) - (sphere[3] * sin(2 * M_PI * q / p));
d_surface[3] = (sphere[2] * sin(2 * M_PI * q / p)) + (sphere[3] * cos(2 * M_PI * q / p));
}
int main(void)
{
char file_name[0xff];
struct klein klein;
struct parm parametrization = {
.grid = (unsigned char[]){8, 8,8,8},
.m = 4,
.n = 4,
.f = lens,
};
snprintf(file_name, 0xff, "%03d-%03d-cube.klein", p, q);
printf("writing %s\n", file_name);
klein_parametrize(&klein, parametrization);
klein_normalize(&klein);
klein_export_file(klein, file_name);
free(klein.vertex);
free(klein.normals);
return 0;
}