TEST(CamerasTest, basic_tests) {
Cameras cameras;
size_t id = cameras.addCameraFovX(
"dummy",
vec3(0.0f, 0.0f, 0.0f),
vec3(0.0f, 0.0f, -1.0f),
vec3(0.0f, 1.0f, 0.0f),
half_pi<float>());
ASSERT_EQ(1, cameras.numCameras());
EXPECT_EQ("dummy", cameras.name(id));
EXPECT_FLOAT_EQ(half_pi<float>(), cameras.fovx(id, 1.0f));
EXPECT_FLOAT_EQ(half_pi<float>(), cameras.fovx(id, 4.0f / 3.0f));
EXPECT_FLOAT_EQ(half_pi<float>(), cameras.fovy(id, 1.0f));
EXPECT_FLOAT_EQ(1.2870022f, cameras.fovy(id, 4.0f / 3.0f));
const float w = 800;
const float h = 600;
const float wInv = 1.0f / w;
const float hInv = 1.0f / h;
const float a = w / h;
auto r0 = cameras.shoot(id, vec2(0.0f, 0.0f), wInv, hInv, a, 400.0f, 300.0f);
auto r1 = cameras.shoot(id, vec2(0.0f, 0.0f), wInv, hInv, a, 0.0f, 0.0f);
auto r2 = cameras.shoot(id, vec2(0.0f, 0.0f), wInv, hInv, a, 800.0f, 600.0f);
auto r3 = cameras.shoot(id, vec2(0.0f, 0.0f), 0.01f, 0.01f, 1, 0.0f, 0.0f);
EXPECT_VEC3_EQ(vec3(0.0f, 0.0f, 0.0f), r0.origin, 0.00001f);
EXPECT_VEC3_EQ(vec3(0.0f, 0.0f, -1.0f), r0.direction, 0.00001f);
EXPECT_VEC3_EQ(vec3(0.0f), r1.origin, 0.000001f);
EXPECT_VEC3_EQ(vec3(-0.685994f, -0.514496f, -0.514496f), r1.direction, 0.000001f);
EXPECT_VEC3_EQ(vec3(0.0f), r2.origin, 0.000001f);
EXPECT_VEC3_EQ(vec3(0.685994f, 0.514496f, -0.514496f), r2.direction, 0.0001f);
EXPECT_VEC3_EQ(vec3(0.0f), r3.origin, 0.00001f);
EXPECT_VEC3_EQ(vec3(-0.577f, -0.577f, -0.577f), r3.direction, 0.001f);
}
