142 lines
3.8 KiB
C++
142 lines
3.8 KiB
C++
/*!
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* chapitre-01_tests.cpp
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*
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* Copyright (c) 2015-2024, NADAL Jean-Baptiste. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301 USA
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*
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* @Author: NADAL Jean-Baptiste
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* @Date: 07/02/2021
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*
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*/
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// This is an independent project of an individual developer. Dear PVS-Studio, please check it.
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// PVS-Studio Static Code Analyzer for C, C++, C#, and Java: http://www.viva64.com
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/*---------------------------------------------------------------------------*/
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#include <catch.hpp>
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#include "tuple.h"
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using namespace Raytracer;
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/* ------------------------------------------------------------------------- */
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TEST_CASE("a tuple with w=1.0 is a point", "[Tuple]")
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{
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Tuple a(4.3, -4.2, 3.1, 1.0);
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REQUIRE(a.x() == 4.3f);
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REQUIRE(a.y() == -4.2f);
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REQUIRE(a.z() == 3.1f);
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REQUIRE(a.w() == 1.0f);
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REQUIRE(a.is_point() == true);
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REQUIRE(a.is_vector() == false);
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}
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/* ------------------------------------------------------------------------- */
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TEST_CASE("a tuple with w=0 is a vector", "[Tuple]")
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{
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Tuple a(4.3, -4.2, 3.1, 0.0);
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REQUIRE(a.x() == 4.3f);
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REQUIRE(a.y() == -4.2f);
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REQUIRE(a.z() == 3.1f);
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REQUIRE(a.w() == 0.0f);
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REQUIRE(a.is_point() == false);
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}
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/* ------------------------------------------------------------------------- */
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TEST_CASE("Point() creates tuples with w=1", "[Tuple][Point]")
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{
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Tuple p = Tuple::Point(4, -4, 3);
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REQUIRE(p == Tuple(4, -4, 3, 1));
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}
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/* ------------------------------------------------------------------------- */
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TEST_CASE("Vector() creates tuples with w=0", "[Tuple][Vector]")
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{
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Tuple v = Tuple::Vector(4, -4, 3);
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REQUIRE(v == Tuple(4, -4, 3, 0));
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}
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/* ------------------------------------------------------------------------- */
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TEST_CASE("Adding two tuples", "[Tuple][Operations]")
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{
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Tuple a1(3, -2, 5, 1);
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Tuple a2(-2, 3, 1, 0);
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REQUIRE((a1 + a2) == Tuple(1, 1, 6, 1));
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}
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/* ------------------------------------------------------------------------- */
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TEST_CASE("Subtracting two points", "[Tuple][Operations]")
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{
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Tuple p1 = Tuple::Point(3, 2, 1);
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Tuple p2 = Tuple::Point(5, 6, 7);
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REQUIRE((p1 - p2) == Tuple::Vector(-2, -4, -6));
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}
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/* ------------------------------------------------------------------------- */
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TEST_CASE("Subtracting a vector from a point", "[Tuple][Operations]")
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{
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Tuple p = Tuple::Point(3, 2, 1);
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Tuple v= Tuple::Vector(5, 6, 7);
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REQUIRE((p - v) == Tuple::Point(-2, -4, -6));
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}
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/* ------------------------------------------------------------------------- */
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TEST_CASE("Subtracting two vectors", "[Tuple][Operations]")
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{
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Tuple v1 = Tuple::Vector(3, 2, 1);
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Tuple v2 = Tuple::Vector(5, 6, 7);
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REQUIRE((v1 - v2) == Tuple::Vector(-2, -4, -6));
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}
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/* ------------------------------------------------------------------------- */
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TEST_CASE("Subtracting a vector from the zero vector", "[Tuple][Operations]")
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{
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Tuple zero = Tuple::Vector(0, 0, 0);
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Tuple v = Tuple::Vector(1, -2, 3);
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REQUIRE((zero - v) == Tuple::Vector(-1, 2, -3));
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}
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/* ------------------------------------------------------------------------- */
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TEST_CASE("Negative a tuple", "[Tuple][Operations]")
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{
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Tuple a(1, -2, 3, -4);
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REQUIRE(-a == Tuple(-1, 2, -3, 4));
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}
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