Method getPixel

shared/Bitmap.h:59–62

		(*this.*setPixelFunc)(x, y, c);
	}
	glm::vec4 getPixel(int x, int y) const
	{
		return ((*this.*getPixelFunc)(x, y));
	}
private:
	using setPixel_t = void(Bitmap::*)(int, int, const glm::vec4&);
	using getPixel_t = glm::vec4(Bitmap::*)(int, int) const;