Method TexturedTriangle

extensions/olcPGEX_Graphics3D.h:670–843

	}

	void GFX3D::TexturedTriangle(int x1, int y1, float u1, float v1, float w1,
		int x2, int y2, float u2, float v2, float w2,
		int x3, int y3, float u3, float v3, float w3, olc::Sprite* spr)
		
	{
		if (y2 < y1)
		{
			std::swap(y1, y2);
			std::swap(x1, x2);
			std::swap(u1, u2);
			std::swap(v1, v2);
			std::swap(w1, w2);
		}

		if (y3 < y1)
		{
			std::swap(y1, y3);
			std::swap(x1, x3);
			std::swap(u1, u3);
			std::swap(v1, v3);
			std::swap(w1, w3);
		}

		if (y3 < y2)
		{
			std::swap(y2, y3);
			std::swap(x2, x3);
			std::swap(u2, u3);
			std::swap(v2, v3);
			std::swap(w2, w3);
		}

		int dy1 = y2 - y1;
		int dx1 = x2 - x1;
		float dv1 = v2 - v1;
		float du1 = u2 - u1;
		float dw1 = w2 - w1;

		int dy2 = y3 - y1;
		int dx2 = x3 - x1;
		float dv2 = v3 - v1;
		float du2 = u3 - u1;
		float dw2 = w3 - w1;

		float tex_u, tex_v, tex_w;

		float dax_step = 0, dbx_step = 0,
			du1_step = 0, dv1_step = 0,
			du2_step = 0, dv2_step = 0,
			dw1_step = 0, dw2_step = 0;

		if (dy1) dax_step = dx1 / (float)abs(dy1);
		if (dy2) dbx_step = dx2 / (float)abs(dy2);

		if (dy1) du1_step = du1 / (float)abs(dy1);
		if (dy1) dv1_step = dv1 / (float)abs(dy1);
		if (dy1) dw1_step = dw1 / (float)abs(dy1);