diff options
| -rw-r--r-- | example/rotation.c | 36 |
1 files changed, 16 insertions, 20 deletions
diff --git a/example/rotation.c b/example/rotation.c index 6a13b2da..25755f5f 100644 --- a/example/rotation.c +++ b/example/rotation.c @@ -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]; - wlr_surface_get_matrix(s->cat_texture, &matrix, - &output->transform_matrix, ostate->x, ostate->y); - wlr_render_with_matrix(s->renderer, s->cat_texture, &matrix); + 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, 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) { |