67 lines
1.5 KiB
C++
67 lines
1.5 KiB
C++
#include "matrix.hpp"
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#include "vector.hpp"
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#include "debug.hpp"
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#include <cstdlib>
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int
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main (int, char **) {
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{
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// Identity matrix-vector multiplication
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auto v = util::vector<4> { 1, 2, 3, 4 };
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auto r = util::matrix<float>::IDENTITY * v;
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CHECK_EQ (r, v);
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}
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{
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// Simple matrix-vector multiplication
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util::matrix<float> m { {
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{ 1, 2, 3, 4 },
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{ 5, 6, 7, 8 },
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{ 9, 10, 11, 12 },
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{ 13, 14, 15, 16 }
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} };
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util::vector<4> v { 1, 2, 3, 4 };
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auto r = m * v;
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CHECK_EQ (r.x, 30);
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CHECK_EQ (r.y, 70);
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CHECK_EQ (r.z, 110);
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CHECK_EQ (r.w, 150);
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}
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{
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// Ensure identity inverts to identity
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auto m = util::matrix<float>::IDENTITY.inverse ();
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for (size_t r = 0; r < m.rows; ++r)
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for (size_t c = 0; c < m.cols; ++c)
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if (r == c)
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CHECK_EQ (m.values[r][c], 1);
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else
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CHECK_EQ (m.values[r][c], 0);
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}
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{
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// Simple inversion test
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util::matrix<float> m { {
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{ 4, 1, 2, 3 },
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{ 2, 3, 4, 1 },
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{ 3, 4, 1, 2 },
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{ 1, 2, 3, 4 }
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} };
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util::matrix<float> r { {
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{ 11, 1, 1, -9 },
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{ -9, 1, 11, 1 },
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{ 1, 11, -9, 1 },
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{ 1, -9, 1, 11 }
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} };
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CHECK_EQ (m.inverse (), r / 40.f);
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}
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return EXIT_SUCCESS;
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}
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