C++ (Cpp) weston_matrix_scale示例

示例#1

文件： animation.c 项目： anderco/weston

static void
zoom_frame(struct weston_surface_animation *animation)
{
	struct weston_surface *es = animation->surface;
	float scale;

	scale = animation->start +
		(animation->stop - animation->start) *
		animation->spring.current;
	weston_matrix_init(&animation->transform.matrix);
	weston_matrix_translate(&animation->transform.matrix,
				-0.5f * es->geometry.width,
				-0.5f * es->geometry.height, 0);
	weston_matrix_scale(&animation->transform.matrix, scale, scale, scale);
	weston_matrix_translate(&animation->transform.matrix,
				0.5f * es->geometry.width,
				0.5f * es->geometry.height, 0);

	es->alpha = animation->spring.current;
	if (es->alpha > 1.0)
		es->alpha = 1.0;
}

示例#2

文件： transform.cpp 项目： Acidburn0zzz/nuclear

void Transform::scale(float x, float y, float z)
{
    weston_matrix_scale(&m_transform.matrix, x, y, z);
}