Method AddEdge

libs/MVS/SceneTexture.cpp:257–270

sample the edge with linear weights

		inline SampleImage(const Image8U3& _image) : image(_image), sampler() {}
		// sample the edge with linear weights
		void AddEdge(const TexCoord& p0, const TexCoord& p1) {
			const TexCoord p01(p1 - p0);
			const float length(norm(p01));
			ASSERT(length > 0.f);
			const int nSamples(ROUND2INT(MAXF(length, 1.f) * 2.f)-1);
			AccumColor edgeAccumColor;
			for (int s=0; s<nSamples; ++s) {
				const float len(static_cast<float>(s) / nSamples);
				const TexCoord samplePos(p0 + p01 * len);
				const Color color(image.sample<Sampler,Color>(sampler, samplePos));
				edgeAccumColor.Add(RGB2YCBCR(color), 1.f-len);
			}
			accumColor.Add(edgeAccumColor.Normalized(), length);
		}
		// returns accumulated color
		Color GetColor() const {
			return accumColor.Normalized();