C++ (Cpp) calc_cx Examples

Example #1

File: obs-scene.c Project: moser4035/obs-studio

static inline void render_item(struct obs_scene_item *item)
{
	if (item->crop_render) {
		uint32_t width  = obs_source_get_width(item->source);
		uint32_t height = obs_source_get_height(item->source);
		uint32_t cx = calc_cx(item, width);
		uint32_t cy = calc_cy(item, height);

		if (cx && cy && gs_texrender_begin(item->crop_render, cx, cy)) {
			float cx_scale = (float)width  / (float)cx;
			float cy_scale = (float)height / (float)cy;
			gs_matrix_scale3f(cx_scale, cy_scale, 1.0f);
			gs_matrix_translate3f(
					-(float)item->crop.left,
					-(float)item->crop.top,
					0.0f);

			obs_source_video_render(item->source);
			gs_texrender_end(item->crop_render);
		}
	}

	gs_matrix_push();
	gs_matrix_mul(&item->draw_transform);
	if (item->crop_render) {
		gs_texture_t *tex = gs_texrender_get_texture(item->crop_render);

		while (gs_effect_loop(obs->video.default_effect, "Draw"))
			obs_source_draw(tex, 0, 0, 0, 0, 0);
	} else {
		obs_source_video_render(item->source);
	}
	gs_matrix_pop();
}

Example #2

File: obs-scene.c Project: AnthonySuper/obs-studio

static inline void render_item(struct obs_scene_item *item)
{
	if (item->item_render) {
		uint32_t width  = obs_source_get_width(item->source);
		uint32_t height = obs_source_get_height(item->source);
		uint32_t cx = calc_cx(item, width);
		uint32_t cy = calc_cy(item, height);

		if (cx && cy && gs_texrender_begin(item->item_render, cx, cy)) {
			float cx_scale = (float)width  / (float)cx;
			float cy_scale = (float)height / (float)cy;
			struct vec4 clear_color;

			vec4_zero(&clear_color);
			gs_clear(GS_CLEAR_COLOR, &clear_color, 0.0f, 0);
			gs_ortho(0.0f, (float)width, 0.0f, (float)height,
					-100.0f, 100.0f);

			gs_matrix_scale3f(cx_scale, cy_scale, 1.0f);
			gs_matrix_translate3f(
					-(float)item->crop.left,
					-(float)item->crop.top,
					0.0f);

			obs_source_video_render(item->source);
			gs_texrender_end(item->item_render);
		}
	}

	gs_matrix_push();
	gs_matrix_mul(&item->draw_transform);
	if (item->item_render) {
		render_item_texture(item);
	} else {
		obs_source_video_render(item->source);
	}
	gs_matrix_pop();
}

Example #3

File: obs-scene.c Project: AnthonySuper/obs-studio

static void update_item_transform(struct obs_scene_item *item)
{
	uint32_t        width         = obs_source_get_width(item->source);
	uint32_t        height        = obs_source_get_height(item->source);
	uint32_t        cx            = calc_cx(item, width);
	uint32_t        cy            = calc_cy(item, height);
	struct vec2     base_origin;
	struct vec2     origin;
	struct vec2     scale         = item->scale;
	struct calldata params;
	uint8_t         stack[128];

	if (os_atomic_load_long(&item->defer_update) > 0)
		return;

	width = cx;
	height = cy;

	vec2_zero(&base_origin);
	vec2_zero(&origin);

	/* ----------------------- */

	if (item->bounds_type != OBS_BOUNDS_NONE) {
		calculate_bounds_data(item, &origin, &scale, &cx, &cy);
	} else {
		cx = (uint32_t)((float)cx * scale.x);
		cy = (uint32_t)((float)cy * scale.y);
	}

	add_alignment(&origin, item->align, (int)cx, (int)cy);

	matrix4_identity(&item->draw_transform);
	matrix4_scale3f(&item->draw_transform, &item->draw_transform,
			scale.x, scale.y, 1.0f);
	matrix4_translate3f(&item->draw_transform, &item->draw_transform,
			-origin.x, -origin.y, 0.0f);
	matrix4_rotate_aa4f(&item->draw_transform, &item->draw_transform,
			0.0f, 0.0f, 1.0f, RAD(item->rot));
	matrix4_translate3f(&item->draw_transform, &item->draw_transform,
			item->pos.x, item->pos.y, 0.0f);

	item->output_scale = scale;

	/* ----------------------- */

	if (item->bounds_type != OBS_BOUNDS_NONE) {
		vec2_copy(&scale, &item->bounds);
	} else {
		scale.x = (float)width  * item->scale.x;
		scale.y = (float)height * item->scale.y;
	}

	add_alignment(&base_origin, item->align, (int)scale.x, (int)scale.y);

	matrix4_identity(&item->box_transform);
	matrix4_scale3f(&item->box_transform, &item->box_transform,
			scale.x, scale.y, 1.0f);
	matrix4_translate3f(&item->box_transform, &item->box_transform,
			-base_origin.x, -base_origin.y, 0.0f);
	matrix4_rotate_aa4f(&item->box_transform, &item->box_transform,
			0.0f, 0.0f, 1.0f, RAD(item->rot));
	matrix4_translate3f(&item->box_transform, &item->box_transform,
			item->pos.x, item->pos.y, 0.0f);

	/* ----------------------- */

	item->last_width  = width;
	item->last_height = height;

	calldata_init_fixed(&params, stack, sizeof(stack));
	calldata_set_ptr(&params, "scene", item->parent);
	calldata_set_ptr(&params, "item", item);
	signal_handler_signal(item->parent->source->context.signals,
			"item_transform", &params);
}