コード例 #1
0
            virtual BOOL on_draw(HELEMENT he, UINT draw_type, HDC hdc, const
                RECT &rc)
            {
                if ((DRAW_EVENTS)draw_type != where)
                    return FALSE;
                // do default draw
                int w = rc.right - rc.left;
                int h = rc.bottom - rc.top;
                if (!surface)
                {
                    surface = image::create(w, h);
                    redraw = true;
                }
                else if (w != surface->width() || h != surface->height())
                {
                    delete surface;
                    surface = image::create(w, h);
                    redraw = true;
                }
                else if (redraw)
                    surface->clear();

                if (redraw)
                {
                    graphics gx(surface);
                    draw(he, gx, w, h);
                    redraw = false;
                }
                surface->blit(hdc, rc.left, rc.top);

                return default_draw ? TRUE : FALSE;
            }
コード例 #2
0
ファイル: jcmp.cpp プロジェクト: Jaxan/parallel-algorithms
static std::vector<double> decompress(image in){
	auto width = in.header.width;
	auto height = in.header.height;
	assert(is_pow_of_two(width));
	assert(is_pow_of_two(height));

	auto q = in.header.get_quantization(quantization::type::logarithmic);

	std::vector<double> image(width * height, 0.0);

	// read in coefficient on coordinates
	for(auto it = in.data.begin(); it != in.data.end(); ++it){
		auto&& x = *it;
		image[x.x + width*x.y] = q.backwards(x.c);
	}

	in.clear();

	// inverse wavelet transform in y-direction
	for(unsigned int i = 0; i < width; ++i){
		unwavelet(&image[i], height, width);
	}

	// inverse wavelet transform in x-direction
	for(unsigned int i = 0; i < height; ++i){
		unwavelet(&image[i*width], width, 1);
	}

	return image;
}