kolibrios/programs/network/netsurf/libnsfb/test/polystar.c

/* libnsfb ploygon plotter test program */

#ifndef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 199506L
#endif

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

#include "libnsfb.h"
#include "libnsfb_plot.h"
#include "libnsfb_event.h"


#include <time.h>
// Sleep milliseconds
static void sleepMilli(long ms) 
{
	const struct timespec ts = {ms / 1000, ms % 1000 * 1000000};
	nanosleep(&ts, NULL);  
}

#define UNUSED(x) ((x) = (x))

int main(int argc, char **argv)
{
    const char *fename;
    enum nsfb_type_e fetype;
    nsfb_t *nsfb;

    int waitloop = 3;

    nsfb_event_t event;
    nsfb_bbox_t box;
    uint8_t *fbptr;
    int fbstride;

    int sides;
    int radius;
    nsfb_point_t *points;
    int loop;
    nsfb_plot_pen_t pen;

    double rotate;

    if (argc < 2) {
        fename="sdl";
    } else {
        fename = argv[1];
    }

    fetype = nsfb_type_from_name(fename);
    if (fetype == NSFB_SURFACE_NONE) {
        fprintf(stderr, "Unable to convert \"%s\" to nsfb surface type\n", fename);
        return 1;
    }

    nsfb = nsfb_new(fetype);
    if (nsfb == NULL) {
        fprintf(stderr, "Unable to allocate \"%s\" nsfb surface\n", fename);
        return 2;
    }

    if (nsfb_init(nsfb) == -1) {
        fprintf(stderr, "Unable to initialise nsfb surface\n");
        nsfb_free(nsfb);
        return 4;
    }

    /* get the geometry of the whole screen */
    box.x0 = box.y0 = 0;
    nsfb_get_geometry(nsfb, &box.x1, &box.y1, NULL);

    nsfb_get_buffer(nsfb, &fbptr, &fbstride);


    pen.stroke_colour = 0xff000000;
    pen.stroke_type = NFSB_PLOT_OPTYPE_SOLID;


    for (rotate =0; rotate < (2 * M_PI); rotate += (M_PI / 8)) {
	    /* claim the whole screen for update */
	    nsfb_claim(nsfb, &box);

	    nsfb_plot_clg(nsfb, 0xffffffff);

	    radius = (box.y1 / 2);

	    for (sides = 18; sides >=9; sides-=2) {
		    points = malloc(sizeof(nsfb_point_t) * sides);

		    for (loop = 0; loop < sides;loop+=2) {
			    points[loop].x = (box.x1 / 2) + 
				    (radius * cos((loop * 2 * M_PI / sides) + rotate));
			    points[loop].y = (box.y1 / 2) + 
				    (radius * sin((loop * 2 * M_PI / sides) + rotate));

			    points[loop+1].x = (box.x1 / 2) + 
				     ((radius / 3) * cos(((loop+1) * 2 * M_PI / sides) + rotate));
			    points[loop+1].y = (box.y1 / 2) + 
				     ((radius / 3) * sin(((loop+1) * 2 * M_PI / sides) + rotate));
		    }

		    nsfb_plot_polygon(nsfb, (const int *)points, sides, 
				      0xff000000 | (0xffffff / (sides * 2)));

		    nsfb_plot_polylines(nsfb, sides, points, &pen);

		    free(points);
		    radius -= 40;
	    }

	    nsfb_update(nsfb, &box);
	    sleepMilli(100);
    }
    
    /* wait for quit event or timeout */
    while (waitloop > 0) {
	if (nsfb_event(nsfb, &event, 1000)  == false) {
	    break;
	}
	if (event.type == NSFB_EVENT_CONTROL) {
	    if (event.value.controlcode == NSFB_CONTROL_TIMEOUT) {
		/* timeout */
		waitloop--;
	    } else if (event.value.controlcode == NSFB_CONTROL_QUIT) {
		break;
	    }
	}
    }

    nsfb_free(nsfb);

    return 0;
}

/*
 * Local variables:
 *  c-basic-offset: 4
 *  tab-width: 8
 * End:
 */