145 lines
3.1 KiB
C
145 lines
3.1 KiB
C
/* libnsfb ploygon plotter test program */
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#ifndef _POSIX_C_SOURCE
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#define _POSIX_C_SOURCE 199506L
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#endif
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#include <stdio.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <math.h>
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#include "libnsfb.h"
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#include "libnsfb_plot.h"
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#include "libnsfb_event.h"
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#include <time.h>
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// Sleep milliseconds
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static void sleepMilli(long ms)
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{
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const struct timespec ts = {ms / 1000, ms % 1000 * 1000000};
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nanosleep(&ts, NULL);
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}
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#define UNUSED(x) ((x) = (x))
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int main(int argc, char **argv)
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{
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const char *fename;
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enum nsfb_type_e fetype;
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nsfb_t *nsfb;
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int waitloop = 3;
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nsfb_event_t event;
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nsfb_bbox_t box;
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uint8_t *fbptr;
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int fbstride;
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int sides;
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int radius;
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nsfb_point_t *points;
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int loop;
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nsfb_plot_pen_t pen;
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double rotate;
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if (argc < 2) {
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fename="sdl";
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} else {
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fename = argv[1];
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}
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fetype = nsfb_type_from_name(fename);
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if (fetype == NSFB_SURFACE_NONE) {
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fprintf(stderr, "Unable to convert \"%s\" to nsfb surface type\n", fename);
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return 1;
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}
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nsfb = nsfb_new(fetype);
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if (nsfb == NULL) {
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fprintf(stderr, "Unable to allocate \"%s\" nsfb surface\n", fename);
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return 2;
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}
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if (nsfb_init(nsfb) == -1) {
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fprintf(stderr, "Unable to initialise nsfb surface\n");
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nsfb_free(nsfb);
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return 4;
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}
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/* get the geometry of the whole screen */
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box.x0 = box.y0 = 0;
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nsfb_get_geometry(nsfb, &box.x1, &box.y1, NULL);
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nsfb_get_buffer(nsfb, &fbptr, &fbstride);
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pen.stroke_colour = 0xff000000;
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pen.stroke_type = NFSB_PLOT_OPTYPE_SOLID;
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for (rotate =0; rotate < (2 * M_PI); rotate += (M_PI / 8)) {
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/* claim the whole screen for update */
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nsfb_claim(nsfb, &box);
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nsfb_plot_clg(nsfb, 0xffffffff);
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radius = (box.y1 / 2);
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for (sides = 18; sides >=9; sides-=2) {
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points = malloc(sizeof(nsfb_point_t) * sides);
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for (loop = 0; loop < sides;loop+=2) {
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points[loop].x = (box.x1 / 2) +
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(radius * cos((loop * 2 * M_PI / sides) + rotate));
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points[loop].y = (box.y1 / 2) +
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(radius * sin((loop * 2 * M_PI / sides) + rotate));
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points[loop+1].x = (box.x1 / 2) +
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((radius / 3) * cos(((loop+1) * 2 * M_PI / sides) + rotate));
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points[loop+1].y = (box.y1 / 2) +
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((radius / 3) * sin(((loop+1) * 2 * M_PI / sides) + rotate));
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}
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nsfb_plot_polygon(nsfb, (const int *)points, sides,
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0xff000000 | (0xffffff / (sides * 2)));
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nsfb_plot_polylines(nsfb, sides, points, &pen);
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free(points);
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radius -= 40;
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}
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nsfb_update(nsfb, &box);
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sleepMilli(100);
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}
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/* wait for quit event or timeout */
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while (waitloop > 0) {
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if (nsfb_event(nsfb, &event, 1000) == false) {
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break;
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}
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if (event.type == NSFB_EVENT_CONTROL) {
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if (event.value.controlcode == NSFB_CONTROL_TIMEOUT) {
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/* timeout */
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waitloop--;
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} else if (event.value.controlcode == NSFB_CONTROL_QUIT) {
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break;
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}
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}
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}
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nsfb_free(nsfb);
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return 0;
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}
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/*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 8
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* End:
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*/
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