King_DuckZ
aaa8e75dc1
2D cross product is defined as equivalent to: res = cross(a.xy0(), b.xy0()).z()
77 lines
1.3 KiB
C++
77 lines
1.3 KiB
C++
#include "sample_vectors.hpp"
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#include "vectorwrapper/vectorops.hpp"
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#include <gtest/gtest.h>
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struct UnorderedVector {
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int64_t y;
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int64_t z;
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int64_t x;
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};
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namespace vwr {
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template <>
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struct VectorWrapperInfo<UnorderedVector> {
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enum { dimensions = 3 };
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typedef int64_t scalar_type;
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enum {
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offset_x = offsetof(UnorderedVector, x),
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offset_y = offsetof(UnorderedVector, y),
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offset_z = offsetof(UnorderedVector, z)
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};
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};
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} //namespace vwr
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typedef vwr::Vec<UnorderedVector> uvec3i;
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TEST(vwr, dot) {
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using namespace vwr;
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ivec3 a(1);
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ivec3 b(1);
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EXPECT_EQ(3, dot(a, b));
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EXPECT_EQ(3, dot(a, a));
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a = ivec3{5, 2, 8};
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b = ivec3{6, 9, 3};
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EXPECT_EQ(6*5+2*9+8*3, dot(a, b));
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uvec3i c(7, 2, 9);
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EXPECT_EQ(7, c.x());
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EXPECT_EQ(2, c.y());
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EXPECT_EQ(9, c.z());
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EXPECT_EQ(7*5+2*2+9*8, dot(a, c));
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EXPECT_EQ(7*6+2*9+9*3, dot(b, c));
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}
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TEST(vwr, cross2D) {
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using namespace vwr;
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ivec2 a(53, 97);
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ivec2 b(71, -30);
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EXPECT_EQ(-8477, cross(a, b));
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a /= 4;
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b /= -2;
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EXPECT_EQ(1035, cross(a, b));
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}
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TEST(vwr, cross3D) {
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using namespace vwr;
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ivec3 a(5, 7, 13);
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ivec3 b(17, 19, 23);
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ivec3 res(-86, 106, -24);
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EXPECT_EQ(res, cross(a, b));
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a.x() *= 10;
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a.y() *= -8;
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a.z() *= 37;
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b *= -99;
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res.x() = 1032273;
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res.y() = -695673;
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res.z() = -188298;
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EXPECT_EQ(res, cross(a, b));
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}
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