mirror of
https://github.com/yuzu-emu/FasTC
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62cce58c2f
In general, we want the scalar division of vectors and matrices to have the matrix come first and the scalar come second. It doesn't make sense to divide a scalar by a vector or to divide a matrix by a vector, so these should now produce errors at compile time. Also, make sure to add additional types that can be multiplied together using the * operator. If we multiply two vectors together, that's a dot product. The size restrictions should be enforced at compile time by the template parameters for VectorBase<T, N>::Dot In this way, we can support vector/matrix multiplication by retaining the * operator as well.
431 lines
11 KiB
C++
431 lines
11 KiB
C++
/* FasTC
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* Copyright (c) 2014 University of North Carolina at Chapel Hill.
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* All rights reserved.
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*
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* Permission to use, copy, modify, and distribute this software and its
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* documentation for educational, research, and non-profit purposes, without
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* fee, and without a written agreement is hereby granted, provided that the
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* above copyright notice, this paragraph, and the following four paragraphs
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* appear in all copies.
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*
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* Permission to incorporate this software into commercial products may be
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* obtained by contacting the authors or the Office of Technology Development
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* at the University of North Carolina at Chapel Hill <otd@unc.edu>.
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*
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* This software program and documentation are copyrighted by the University of
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* North Carolina at Chapel Hill. The software program and documentation are
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* supplied "as is," without any accompanying services from the University of
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* North Carolina at Chapel Hill or the authors. The University of North
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* Carolina at Chapel Hill and the authors do not warrant that the operation of
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* the program will be uninterrupted or error-free. The end-user understands
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* that the program was developed for research purposes and is advised not to
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* rely exclusively on the program for any reason.
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*
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* IN NO EVENT SHALL THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL OR THE
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* AUTHORS BE LIABLE TO ANY PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL,
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* OR CONSEQUENTIAL DAMAGES, INCLUDING LOST PROFITS, ARISING OUT OF THE USE OF
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* THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF NORTH CAROLINA
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* AT CHAPEL HILL OR THE AUTHORS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND THE AUTHORS SPECIFICALLY
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* DISCLAIM ANY WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE AND ANY
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* STATUTORY WARRANTY OF NON-INFRINGEMENT. THE SOFTWARE PROVIDED HEREUNDER IS ON
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* AN "AS IS" BASIS, AND THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL AND
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* THE AUTHORS HAVE NO OBLIGATIONS TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
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* ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Please send all BUG REPORTS to <pavel@cs.unc.edu>.
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*
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* The authors may be contacted via:
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*
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* Pavel Krajcevski
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* Dept of Computer Science
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* 201 S Columbia St
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* Frederick P. Brooks, Jr. Computer Science Bldg
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* Chapel Hill, NC 27599-3175
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* USA
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*
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* <http://gamma.cs.unc.edu/FasTC/>
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*/
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#include "gtest/gtest.h"
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#include "VectorBase.h"
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static const float kEpsilon = 1e-6;
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TEST(VectorBase, Constructors) {
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FasTC::VectorBase<float, 3> v3f;
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FasTC::VectorBase<double, 1> v1d;
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FasTC::VectorBase<int, 7> v7i;
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FasTC::VectorBase<unsigned, 16> v16u;
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#define TEST_VECTOR_COPY_CONS(v, t, n) \
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do { \
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FasTC::VectorBase<t, n> d##v (v); \
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for(int i = 0; i < n; i++) { \
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EXPECT_EQ(d##v [i], v[i]); \
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} \
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} while(0) \
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TEST_VECTOR_COPY_CONS(v3f, float, 3);
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TEST_VECTOR_COPY_CONS(v1d, double, 1);
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TEST_VECTOR_COPY_CONS(v7i, int, 7);
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TEST_VECTOR_COPY_CONS(v16u, unsigned, 16);
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#undef TEST_VECTOR_COPY_CONS
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}
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TEST(VectorBase, Accessors) {
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FasTC::VectorBase<float, 3> v3f;
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v3f[0] = 1.0f;
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v3f[1] = -2.3f;
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v3f[2] = 1000;
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for(int i = 0; i < 3; i++) {
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EXPECT_EQ(v3f[i], v3f(i));
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}
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v3f(0) = -1.0f;
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v3f(1) = 2.3f;
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v3f(2) = -1000;
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for(int i = 0; i < 3; i++) {
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EXPECT_EQ(v3f(i), v3f[i]);
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}
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}
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TEST(VectorBase, PointerConversion) {
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FasTC::VectorBase<float, 3> v3f;
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v3f[0] = 1.0f;
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v3f[1] = -2.3f;
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v3f[2] = 1000;
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float cmp[3] = { 1.0f, -2.3f, 1000 };
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const float *v3fp = v3f;
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int result = memcmp(cmp, v3fp, 3 * sizeof(float));
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EXPECT_EQ(result, 0);
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cmp[0] = -1.0f;
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cmp[1] = 2.3f;
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cmp[2] = 1000.0f;
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v3f = cmp;
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for(int i = 0; i < 3; i++) {
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EXPECT_EQ(v3f[i], cmp[i]);
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}
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}
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TEST(VectorBase, CastVector) {
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FasTC::VectorBase<float, 3> v3f;
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FasTC::VectorBase<double, 3> v3d = v3f;
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FasTC::VectorBase<int, 3> v3i = v3f;
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for(int i = 0; i < 3; i++) {
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EXPECT_EQ(v3d(i), static_cast<double>(v3f(i)));
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EXPECT_EQ(v3i(i), static_cast<int>(v3f(i)));
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}
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}
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TEST(VectorBase, DotProduct) {
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int iv[5] = { -2, -1, 0, 1, 2 };
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FasTC::VectorBase<int, 5> v5i(iv);
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unsigned uv[5] = { 1, 2, 3, 4, 5 };
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FasTC::VectorBase<unsigned, 5> v5u(uv);
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EXPECT_EQ(v5i.Dot(v5u), 10);
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EXPECT_EQ(v5u.Dot(v5i), 10);
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EXPECT_EQ(v5i * v5u, 10);
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EXPECT_EQ(v5u * v5i, 10);
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}
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TEST(VectorBase, Length) {
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int iv[5] = { 1, 2, 3, 4, 5 };
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FasTC::VectorBase<int, 5> v5i (iv);
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EXPECT_EQ(v5i.LengthSq(), 55);
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EXPECT_EQ(v5i.Length(), 7);
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float fv[6] = {1, 2, 3, 4, 5, 6};
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FasTC::VectorBase<float, 6> v6f (fv);
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EXPECT_EQ(v6f.LengthSq(), 91);
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EXPECT_NEAR(v6f.Length(), sqrt(91.0f), kEpsilon);
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}
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TEST(VectorBase, Normalization) {
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float fv[2] = {1, 0};
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FasTC::VectorBase<float, 2> v2f (fv);
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v2f.Normalize();
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EXPECT_EQ(v2f[0], 1);
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EXPECT_EQ(v2f[1], 0);
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// Normalized vector should be sqrt(2) for each axis, although
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// this can't be represented as integers...
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unsigned uv[2] = {2, 2};
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FasTC::VectorBase<unsigned, 2> v2u (uv);
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v2u.Normalize();
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EXPECT_EQ(v2u[0], 1);
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EXPECT_EQ(v2u[1], 1);
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const float sqrt2 = sqrt(2)/2.0f;
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for(int i = 2; i < 10; i++) {
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v2f[0] = static_cast<float>(i);
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v2f[1] = static_cast<float>(i);
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v2f.Normalize();
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EXPECT_NEAR(v2f[0], sqrt2, kEpsilon);
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EXPECT_NEAR(v2f[1], sqrt2, kEpsilon);
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}
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}
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TEST(VectorBase, Scaling) {
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float fv[2] = {1.0f, 3.0f};
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FasTC::VectorBase<float, 2> v2f (fv);
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FasTC::VectorBase<float, 2> v2fd = v2f * 3.0f;
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EXPECT_NEAR(v2fd[0], 3.0f, kEpsilon);
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EXPECT_NEAR(v2fd[1], 9.0f, kEpsilon);
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v2fd = -1.0 * v2f;
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EXPECT_NEAR(v2fd[0], -1.0f, kEpsilon);
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EXPECT_NEAR(v2fd[1], -3.0f, kEpsilon);
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v2fd = v2f / 3;
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EXPECT_NEAR(v2fd[0], 1.0f / 3.0f, kEpsilon);
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EXPECT_NEAR(v2fd[1], 1.0f, kEpsilon);
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unsigned uv[2] = {1, 3};
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FasTC::VectorBase<unsigned, 2> v2u (uv);
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FasTC::VectorBase<unsigned, 2> v2ud = v2u * 0.5;
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EXPECT_EQ(v2ud[0], 0);
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EXPECT_EQ(v2ud[1], 1);
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v2ud = v2u / 0.5f;
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EXPECT_EQ(v2ud[0], 2);
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EXPECT_EQ(v2ud[1], 6);
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}
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TEST(VectorBase, Addition) {
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float fv[2] = {1.1f, 3.2f};
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FasTC::VectorBase<float, 2> v2f (fv);
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int uv[2] = {5, 2};
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FasTC::VectorBase<int, 2> v2u (uv);
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FasTC::VectorBase<int, 2> au = v2u + v2f;
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EXPECT_EQ(au[0], 6);
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EXPECT_EQ(au[1], 5);
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FasTC::VectorBase<float, 2> af = v2f + v2u;
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EXPECT_NEAR(af[0], 6.1f, kEpsilon);
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EXPECT_NEAR(af[1], 5.2f, kEpsilon);
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au = v2u - v2f;
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EXPECT_EQ(au[0], 3);
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EXPECT_EQ(au[1], -1);
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af = v2f - v2u;
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EXPECT_NEAR(af[0], -3.9f, kEpsilon);
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EXPECT_NEAR(af[1], 1.2f, kEpsilon);
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}
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////////////////////////////////////////////////////////////////////////////////
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//
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// Vec2
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//
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////////////////////////////////////////////////////////////////////////////////
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#include "Vector2.h"
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TEST(Vector2, BaseFunctionality) {
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FasTC::Vec2f v2f;
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FasTC::Vec2d v2d;
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v2f = v2d;
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EXPECT_NEAR(v2f[0], v2d[0], kEpsilon);
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EXPECT_NEAR(v2f[1], v2d[1], kEpsilon);
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}
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TEST(Vector2, Accessors) {
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float fv[2] = { 1.0f, 2.0f };
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FasTC::Vec2f v2f (fv);
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EXPECT_EQ(v2f.X(), 1.0f);
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EXPECT_EQ(v2f.Y(), 2.0f);
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v2f.X() = 4.0f;
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v2f.Y() = 5.0f;
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EXPECT_EQ(v2f.X(), 4.0f);
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EXPECT_EQ(v2f.Y(), 5.0f);
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}
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TEST(Vector2, Addition) {
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float fv[2] = { 1.0f, 2.0f };
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FasTC::Vec2f v2f (fv);
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double dv[2] = { 4.3, -10.2 };
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FasTC::Vec2d v2d (dv);
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EXPECT_NEAR((v2f + v2d).X(), 5.3, kEpsilon);
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EXPECT_NEAR((v2f + v2d).Y(), -8.2, kEpsilon);
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}
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TEST(Vector2, Swizzle) {
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float fv[2] = {1.0f, 2.0f};
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FasTC::Vec2f v;
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v = fv;
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EXPECT_EQ(v.XX().X(), 1.0f);
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EXPECT_EQ(v.XX().Y(), 1.0f);
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EXPECT_EQ(v.YY().X(), 2.0f);
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EXPECT_EQ(v.YY().Y(), 2.0f);
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EXPECT_EQ(v.YX().X(), 2.0f);
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EXPECT_EQ(v.YX().Y(), 1.0f);
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EXPECT_EQ(v.XY().X(), 1.0f);
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EXPECT_EQ(v.XY().Y(), 2.0f);
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}
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////////////////////////////////////////////////////////////////////////////////
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//
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// Vec3
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//
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////////////////////////////////////////////////////////////////////////////////
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#include "Vector3.h"
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TEST(Vector3, BaseFunctionality) {
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FasTC::Vec3f vf;
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FasTC::Vec3d vd;
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vf = vd;
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for(int i = 0; i < 3; i++) {
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EXPECT_NEAR(vf[i], vd[i], kEpsilon);
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}
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}
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TEST(Vector3, Accessors) {
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float fv[3] = { 1.0f, 2.0f, 3.0f };
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FasTC::Vec3f v3f (fv);
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EXPECT_EQ(v3f.X(), 1.0f);
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EXPECT_EQ(v3f.Y(), 2.0f);
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EXPECT_EQ(v3f.Z(), 3.0f);
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v3f.X() = 4.0f;
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v3f.Y() = 5.0f;
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v3f.Z() = 6.0f;
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EXPECT_EQ(v3f.X(), 4.0f);
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EXPECT_EQ(v3f.Y(), 5.0f);
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EXPECT_EQ(v3f.Z(), 6.0f);
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}
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TEST(Vector3, Addition) {
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float fv[3] = { 1.0f, 2.0f, 3.0f };
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FasTC::Vec3f v3f (fv);
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double dv[3] = { 4.3, -10.2, 0.0f };
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FasTC::Vec3d v3d (dv);
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EXPECT_NEAR((v3f + v3d).X(), 5.3, kEpsilon);
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EXPECT_NEAR((v3f + v3d).Y(), -8.2, kEpsilon);
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EXPECT_NEAR((v3f + v3d).Z(), 3.0, kEpsilon);
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}
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TEST(Vector3, Swizzle) {
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float fv[3] = {1.0f, 2.0f, 3.0f};
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FasTC::Vec3f v;
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v = fv;
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EXPECT_EQ(v.XXX().Y(), 1.0f);
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EXPECT_EQ(v.YZX().X(), 2.0f);
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EXPECT_EQ(v.ZZY().Z(), 2.0f);
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EXPECT_EQ(v.ZYZ().X(), 3.0f);
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}
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TEST(Vector3, CrossProduct) {
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float fv[3] = {1.0f, 2.0f, 3.0f};
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FasTC::Vec3f v1 (fv);
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FasTC::Vec3f v2 = v1;
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std::swap(v1.X(), v1.Z());
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// Right handed coordinate system...
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FasTC::Vec3f r = v1.Cross(v2);
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EXPECT_NEAR(r.X(), 4.0f, kEpsilon);
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EXPECT_NEAR(r.Y(), -8.0f, kEpsilon);
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EXPECT_NEAR(r.Z(), 4.0f, kEpsilon);
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v1.X() = v1.Y() = v2.X() = v2.Z() = 0.0f;
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v1.Z() = v2.Y() = 1.0f;
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r = v1.Cross(v2);
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EXPECT_EQ(r.X(), -1.0f);
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EXPECT_EQ(r.Y(), 0.0f);
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EXPECT_EQ(r.Z(), 0.0f);
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r = v2.Cross(v1);
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EXPECT_EQ(r.X(), 1.0f);
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EXPECT_EQ(r.Y(), 0.0f);
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EXPECT_EQ(r.Z(), 0.0f);
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}
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////////////////////////////////////////////////////////////////////////////////
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//
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// Vec4
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//
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////////////////////////////////////////////////////////////////////////////////
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#include "Vector4.h"
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TEST(Vector4, BaseFunctionality) {
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FasTC::Vec4f vf;
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FasTC::Vec4d vd;
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vf = vd;
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for(int i = 0; i < 4; i++) {
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EXPECT_NEAR(vf[i], vd[i], kEpsilon);
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}
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}
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TEST(Vector4, Accessors) {
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float fv[4] = { 1.0f, 2.0f, 3.0f, 4.0f };
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FasTC::Vec4f v4f (fv);
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EXPECT_EQ(v4f.X(), 1.0f);
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EXPECT_EQ(v4f.Y(), 2.0f);
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EXPECT_EQ(v4f.Z(), 3.0f);
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EXPECT_EQ(v4f.W(), 4.0f);
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v4f.X() = 5.0f;
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v4f.Y() = 6.0f;
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v4f.Z() = 7.0f;
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v4f.W() = 8.0f;
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EXPECT_EQ(v4f.X(), 5.0f);
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EXPECT_EQ(v4f.Y(), 6.0f);
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EXPECT_EQ(v4f.Z(), 7.0f);
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EXPECT_EQ(v4f.W(), 8.0f);
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}
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TEST(Vector4, Addition) {
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float fv[4] = { 1.0f, 2.0f, 3.0f, 4.0f };
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FasTC::Vec4f v4f (fv);
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double dv[4] = { 4.3, -10.2, 0.0f, -22.0f };
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FasTC::Vec4d v3d (dv);
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EXPECT_NEAR((v4f + v3d).X(), 5.3, kEpsilon);
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EXPECT_NEAR((v4f + v3d).Y(), -8.2, kEpsilon);
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EXPECT_NEAR((v4f + v3d).Z(), 3.0, kEpsilon);
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EXPECT_NEAR((v4f + v3d).W(), -18.0, kEpsilon);
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}
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TEST(Vector4, Swizzle) {
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float fv[4] = {1.0f, 2.0f, 3.0f, 4.0f};
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FasTC::Vec4f v;
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v = fv;
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EXPECT_EQ(v.XXXX().Y(), 1.0f);
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EXPECT_EQ(v.YZXW().X(), 2.0f);
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EXPECT_EQ(v.ZWY().Z(), 2.0f);
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EXPECT_EQ(v.ZZ().X(), 3.0f);
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EXPECT_EQ(v.WWXY().W(), 2.0f);
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}
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