//
// Created by Wouter Groeneveld on 08/07/20.
//

#include <gtest/gtest.h>
#include <math.h>
#include <libgba-sprite-engine/gbamatrix.h>
#include <libgba-sprite-engine/math.h>

class GBAMatrixSuite : public ::testing::Test {
protected:
    virtual void TearDown() {
    }

    virtual void SetUp() {
    }
};


TEST_F(GBAMatrixSuite, PerspectiveFovLH_TestData) {
    /* IN:
     * fov 0.78, aspect 1.6, znear 0.01, zfar 1
     * OUT:
     0: 1.520478108791285
    1: 0
    2: 0
    3: 0
    4: 0
    5: 2.4327649740660564
    6: 0
    7: 0
    8: 0
    9: 0
    10: 1.0101010101010102
    11: 1
    12: 0
    13: 0
    14: -0.010101010101010102
    15: 0
     */
    auto result = GBAMatrix::perspectiveFovLH(float2fx(0.78), float2fx(1.6), float2fx(0.01), float2fx(1));

    // hmm... is this correct? rounding issues aside?
    ASSERT_EQ(rnd(fx2float(result.mAt(0))), 1.565f);
    ASSERT_EQ(fx2float(result.mAt(1)), 0);
    ASSERT_EQ(rnd(fx2float(result.mAt(5))), 2.505f);
    ASSERT_EQ(rnd(fx2float(result.mAt(10))), 1.005f);
    ASSERT_EQ(rnd(fx2float(result.mAt(14))), -0.005f);
    ASSERT_EQ(fx2float(result.mAt(15)), 0);
}