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5a8521edd7
- return 0 for sin(180), cos(90), etc. - return the same sin/cos value at +/- 45 * n degree.
90 lines
3.5 KiB
C++
90 lines
3.5 KiB
C++
#ifdef _MSC_VER
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#define NOMINMAX
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#endif
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#include <iostream>
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#define TEST_NO_MAIN
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#include "acutest.h"
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#include "value-types.hh"
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#include "unit-value-types.h"
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#include "prim-types.hh"
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#include "math-util.inc"
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#include "unit-common.hh"
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using namespace tinyusdz;
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using namespace tinyusdz_test;
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void math_sin_pi_test(void) {
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double kPI = math::constants<double>::pi();
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for (int i = -360; i <= 360; i++) {
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double ref_v = std::sin(double(i) * kPI / 180.0);
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double sin_v = math::sin_pi(double(i)/180.0);
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// TODO: dyanmically change eps based on input degree value.
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if (!math::is_close(ref_v, sin_v, 5*std::numeric_limits<double>::epsilon())) {
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printf("sin(%d degree) differes: ref = %lf, sin_pi = %lf\n", i, ref_v, sin_v);
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TEST_CHECK(0);
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}
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}
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TEST_CHECK(1); // ok
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}
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void math_cos_pi_test(void) {
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double kPI = math::constants<double>::pi();
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for (int i = -360; i <= 360; i++) {
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double ref_v = std::cos(double(i) * kPI / 180.0);
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double cos_v = math::cos_pi(double(i)/180.0);
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// TODO: dyanmically change eps based on input degree value.
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if (!math::is_close(ref_v, cos_v, 4*std::numeric_limits<double>::epsilon())) {
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printf("cos(%d degree) differes: ref = %lf, sin_pi = %lf\n", i, ref_v, cos_v);
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TEST_CHECK(0);
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}
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}
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TEST_CHECK(1); // ok
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}
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void math_sin_cos_pi_test(void) {
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// should exactly match(whereas std::sin/cos is not)
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TEST_CHECK(math::is_close(math::cos_pi(315.0/180.0), -math::sin_pi(315.0/180.0), 0.0));
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TEST_MSG("cos(315) = %lf, sin(315) = %lf", math::cos_pi(315.0/180.0), math::sin_pi(315.0/180.0));
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TEST_CHECK(math::is_close(math::cos_pi(225.0/180.0), math::sin_pi(225.0/180.0), 0.0));
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TEST_MSG("cos(225) = %lf, sin(225) = %lf", math::cos_pi(225.0/180.0), math::sin_pi(225.0/180.0));
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TEST_CHECK(math::is_close(-math::cos_pi(135.0/180.0), math::sin_pi(135.0/180.0), 0.0));
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TEST_MSG("cos(135) = %lf, sin(135) = %lf", math::cos_pi(135.0/180.0), math::sin_pi(135.0/180.0));
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TEST_CHECK(math::is_close(math::cos_pi(45.0/180.0), math::sin_pi(45.0/180.0), 0.0));
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TEST_MSG("cos(45) = %lf, sin(45) = %lf", math::cos_pi(45.0/180.0), math::sin_pi(45.0/180.0));
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TEST_CHECK(math::is_close(math::cos_pi(-45.0/180.0), -math::sin_pi(-45.0/180.0), 0.0));
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TEST_MSG("cos(-45) = %lf, sin(-45) = %lf", math::cos_pi(-45.0/180.0), math::sin_pi(-45.0/180.0));
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TEST_CHECK(math::is_close(math::cos_pi(-135.0/180.0), math::sin_pi(-135.0/180.0), 0.0));
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TEST_MSG("cos(-135) = %lf, sin(-135) = %lf", math::cos_pi(-135.0/180.0), math::sin_pi(-135.0/180.0));
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TEST_CHECK(math::is_close(-math::cos_pi(-225.0/180.0), math::sin_pi(-225.0/180.0), 0.0));
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TEST_MSG("cos(-225) = %lf, sin(-225) = %lf", math::cos_pi(-225.0/180.0), math::sin_pi(-225.0/180.0));
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TEST_CHECK(math::is_close(math::cos_pi(-315.0/180.0), math::sin_pi(-315.0/180.0), 0.0));
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TEST_MSG("cos(-315) = %lf, sin(-315) = %lf", math::cos_pi(-315.0/180.0), math::sin_pi(-315.0/180.0));
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// must be exactly zero
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TEST_CHECK(math::is_close(math::cos_pi(90.0/180.0), 0.0, 0.0));
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TEST_CHECK(math::is_close(math::cos_pi(270.0/180.0), 0.0, 0.0));
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TEST_CHECK(math::is_close(math::cos_pi(-90.0/180.0), 0.0, 0.0));
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TEST_CHECK(math::is_close(math::cos_pi(-270.0/180.0), 0.0, 0.0));
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TEST_CHECK(math::is_close(math::sin_pi(0.0), 0.0, 0.0));
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TEST_CHECK(math::is_close(math::sin_pi(360.0/180.0), 0.0, 0.0));
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TEST_CHECK(math::is_close(math::sin_pi(180.0/180.0), 0.0, 0.0));
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TEST_CHECK(math::is_close(math::sin_pi(-180.0/180.0), 0.0, 0.0));
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TEST_CHECK(math::is_close(math::sin_pi(-360.0/180.0), 0.0, 0.0));
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}
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