C++ (Cpp) _cairo_array_index_const 예제들

예제 #1

파일: cairo-array.c 프로젝트: 1833183060/wke

/**
 * _cairo_array_copy_element:
 * @array: a #cairo_array_t
 *
 * Copy a single element out of the array from index @index into the
 * location pointed to by @dst.
 **/
void
_cairo_array_copy_element (const cairo_array_t *array,
			   unsigned int         index,
			   void                *dst)
{
    memcpy (dst, _cairo_array_index_const (array, index), array->element_size);
}

예제 #2

static inline void
_cairo_gl_composite_draw_tristrip (cairo_gl_context_t *ctx)
{
    cairo_array_t* indices = &ctx->tristrip_indices;
    const int *indices_array = _cairo_array_index_const (indices, 0);
    glDrawElements (GL_TRIANGLE_STRIP, _cairo_array_num_elements (indices), GL_UNSIGNED_INT, indices_array);
    _cairo_array_truncate (indices, 0);
}

예제 #3

파일: cairo-array.c 프로젝트: 1833183060/wke

cairo_status_t
_cairo_user_data_array_copy (cairo_user_data_array_t	*dst,
			     const cairo_user_data_array_t	*src)
{
    /* discard any existing user-data */
    if (dst->num_elements != 0) {
	_cairo_user_data_array_fini (dst);
	_cairo_user_data_array_init (dst);
    }

    return _cairo_array_append_multiple (dst,
					 _cairo_array_index_const (src, 0),
					 src->num_elements);
}

예제 #4

파일: cairo-gl-composite.c 프로젝트: csyuschmjuh/apl

static inline void
_cairo_gl_composite_draw_tristrip (cairo_gl_context_t *ctx)
{
    cairo_array_t* indices = &ctx->tristrip_indices;
    const unsigned short *indices_array = _cairo_array_index_const (indices, 0);

    if (ctx->pre_shader) {
	cairo_gl_shader_t *prev_shader = ctx->current_shader;

	_cairo_gl_set_shader (ctx, ctx->pre_shader);
	_cairo_gl_set_operator (ctx, CAIRO_OPERATOR_DEST_OUT, TRUE);
	glDrawElements (GL_TRIANGLE_STRIP, _cairo_array_num_elements (indices), GL_UNSIGNED_SHORT, indices_array);

	_cairo_gl_set_shader (ctx, prev_shader);
	_cairo_gl_set_operator (ctx, CAIRO_OPERATOR_ADD, TRUE);
    }

    glDrawElements (GL_TRIANGLE_STRIP, _cairo_array_num_elements (indices), GL_UNSIGNED_SHORT, indices_array);
    _cairo_array_truncate (indices, 0);
}

예제 #5

파일: cairo-gl-composite.c 프로젝트: csyuschmjuh/apl

static cairo_int_status_t
_cairo_gl_composite_append_vertex_indices (cairo_gl_context_t	*ctx,
					   int			 number_of_new_indices,
					   cairo_bool_t		 is_connected)
{
    cairo_int_status_t status = CAIRO_INT_STATUS_SUCCESS;
    cairo_array_t *indices = &ctx->tristrip_indices;
    int number_of_indices = _cairo_array_num_elements (indices);
    unsigned short current_vertex_index = 0;
    int i;

    assert (number_of_new_indices > 0);

    /* If any preexisting triangle triangle strip indices exist on this
       context, we insert a set of degenerate triangles from the last
       preexisting vertex to our first one. */
    if (number_of_indices > 0 && is_connected) {
	const unsigned short *indices_array = _cairo_array_index_const (indices, 0);
	current_vertex_index = indices_array[number_of_indices - 1];

	status = _cairo_array_append (indices, &current_vertex_index);
	if (unlikely (status))
	    return status;

	current_vertex_index++;
	status =_cairo_array_append (indices, &current_vertex_index);
	if (unlikely (status))
	    return status;
    } else
	current_vertex_index = (unsigned short) number_of_indices;

    for (i = 0; i < number_of_new_indices; i++) {
	status = _cairo_array_append (indices, &current_vertex_index);
	current_vertex_index++;
	if (unlikely (status))
	    return status;
    }

    return CAIRO_STATUS_SUCCESS;
}