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Spice up the example program a bit

This commit is contained in:
Drew DeVault 2017-06-09 10:38:29 -04:00
parent 7a25d6c50b
commit 28e3148bbc
1 changed files with 16 additions and 20 deletions
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32
example/rotation.c
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@ -32,8 +32,7 @@ struct output_state {
struct wlr_output *output;
struct state *state;
struct wl_listener frame;
float x, y;
float vel_x, vel_y;
float x_offs, y_offs;
};
struct output_config {
@ -47,12 +46,19 @@ static void output_frame(struct wl_listener *listener, void *data) {
struct wlr_output *output = ostate->output;
struct state *s = ostate->state;
int32_t width, height;
wlr_output_effective_resolution(output, &width, &height);
wlr_renderer_begin(s->renderer, output);
float matrix[16];
for (int y = -128 + (int)ostate->y_offs; y < height; y += 128) {
for (int x = -128 + (int)ostate->x_offs; x < width; x += 128) {
wlr_surface_get_matrix(s->cat_texture, &matrix,
&output->transform_matrix, ostate->x, ostate->y);
&output->transform_matrix, x, y);
wlr_render_with_matrix(s->renderer, s->cat_texture, &matrix);
}
}
wlr_renderer_end(s->renderer);
@ -62,18 +68,10 @@ static void output_frame(struct wl_listener *listener, void *data) {
(now.tv_nsec - ostate->last_frame.tv_nsec) / 1000000;
float seconds = ms / 1000.0f;
int32_t width, height;
wlr_output_effective_resolution(output, &width, &height);
ostate->x += ostate->vel_x * seconds;
ostate->y += ostate->vel_y * seconds;
if (ostate->y > height - 128) {
ostate->vel_y = -ostate->vel_y;
} else {
ostate->vel_y += 50 * seconds;
}
if (ostate->x > width - 128 || ostate->x < 0) {
ostate->vel_x = -ostate->vel_x;
}
ostate->x_offs += 128 * seconds;
ostate->y_offs += 128 * seconds;
if (ostate->x_offs > 128) ostate->x_offs = 0;
if (ostate->y_offs > 128) ostate->y_offs = 0;
ostate->last_frame = now;
}
@ -90,9 +88,7 @@ static void output_add(struct wl_listener *listener, void *data) {
ostate->output = output;
ostate->state = state;
ostate->frame.notify = output_frame;
ostate->x = ostate->y = 0;
ostate->vel_x = 100;
ostate->vel_y = 0;
ostate->x_offs = ostate->y_offs = 0;
struct output_config *conf;
wl_list_for_each(conf, &state->config, link) {