create_path_lissajous.c

Example showing how to create Lissajous profile scans.

#include <stdio.h>
#include <stdlib.h> 
#include <string.h>
#include <stdbool.h>

#define _USE_MATH_DEFINES
#include <math.h>

#include "lib/gwyscan.h"

int main()
{
    int i;
    int ndata = 0;
    int Ncp = 0; /* The number of generated self-intersection cross points */
        
    /***********************************     path generation     **********************************/
    // LabView friendly implementation

    double *xydata = NULL;

    ndata = gwyscan_create_path_lissajous(NULL, 1, 1, 20, 20, 1, 1, M_PI_4, &Ncp);
    xydata = malloc(2*ndata * sizeof(double));
    gwyscan_create_path_lissajous(xydata, 1, 1, 20, 20, 1, 1, M_PI_4, &Ncp);

    FILE* fp = fopen("scan_path_lissajous.txt", "wt");
    if (fp == NULL) {
        printf("Error. Unable to open file for writing %s \n", strerror(errno));
        return 0;
    }
    for (i = 0; i < ndata; i++)
        fprintf(fp, "%d %g %g\n", i, xydata[2*i], xydata[2*i + 1]);

    printf("Ncp = %d \n", Ncp);

    fclose(fp);

    free(xydata);

    return 0;
}