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Add unit tests for the free camera

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This commit is contained in:
Mikko Pulkki
2020-04-27 13:32:03 +03:00
committed by Mikko Pulkki
parent 7b4a126cad
commit 3a2db7cbf5
3 changed files with 503 additions and 2 deletions
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1
test/CMakeLists.txt
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@@ -82,6 +82,7 @@ add_library(
${PROJECT_SOURCE_DIR}/test/tile/vector_tile.test.cpp
${PROJECT_SOURCE_DIR}/test/util/async_task.test.cpp
${PROJECT_SOURCE_DIR}/test/util/bounding_volumes.test.cpp
${PROJECT_SOURCE_DIR}/test/util/camera.test.cpp
${PROJECT_SOURCE_DIR}/test/util/dtoa.test.cpp
${PROJECT_SOURCE_DIR}/test/util/geo.test.cpp
${PROJECT_SOURCE_DIR}/test/util/grid_index.test.cpp

245
test/map/transform.test.cpp
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@@ -1,9 +1,10 @@
#include <mbgl/test/util.hpp>
#include <gmock/gmock.h>
#include <cmath>
#include <mbgl/map/transform.hpp>
#include <mbgl/util/geo.hpp>
#include <cmath>
#include <mbgl/util/quaternion.hpp>
using namespace mbgl;
@@ -870,3 +871,243 @@ TEST(Transform, MinMaxPitch) {
transform.setMinPitch(60);
ASSERT_DOUBLE_EQ(45 * util::DEG2RAD, transform.getState().getMinPitch());
}
static const double abs_double_error = 1e-5;
MATCHER_P(Vec3NearEquals, vec, "") {
return std::fabs(vec[0] - arg[0]) <= abs_double_error && std::fabs(vec[1] - arg[1]) <= abs_double_error &&
std::fabs(vec[2] - arg[2]) <= abs_double_error;
}
TEST(Transform, FreeCameraOptionsInvalidSize) {
Transform transform;
FreeCameraOptions options;
options.orientation = vec4{{1.0, 1.0, 1.0, 1.0}};
options.position = vec3{{0.1, 0.2, 0.3}};
transform.setFreeCameraOptions(options);
const auto updatedOrientation = transform.getFreeCameraOptions().orientation.value();
const auto updatedPosition = transform.getFreeCameraOptions().position.value();
EXPECT_DOUBLE_EQ(0.0, updatedOrientation[0]);
EXPECT_DOUBLE_EQ(0.0, updatedOrientation[1]);
EXPECT_DOUBLE_EQ(0.0, updatedOrientation[2]);
EXPECT_DOUBLE_EQ(1.0, updatedOrientation[3]);
EXPECT_THAT(updatedPosition, Vec3NearEquals(vec3{{0.0, 0.0, 0.0}}));
}
TEST(Transform, FreeCameraOptionsNanInput) {
Transform transform;
transform.resize({100, 100});
FreeCameraOptions options;
options.position = vec3{{0.5, 0.5, 0.25}};
transform.setFreeCameraOptions(options);
options.position = vec3{{0.0, 0.0, NAN}};
transform.setFreeCameraOptions(options);
EXPECT_EQ((vec3{{0.5, 0.5, 0.25}}), transform.getFreeCameraOptions().position.value());
// Only the invalid parameter should be discarded
options.position = vec3{{0.3, 0.1, 0.2}};
options.orientation = vec4{{NAN, 0.0, NAN, 0.0}};
transform.setFreeCameraOptions(options);
EXPECT_THAT(transform.getFreeCameraOptions().position.value(), Vec3NearEquals(vec3{{0.3, 0.1, 0.2}}));
EXPECT_EQ(Quaternion::identity.m, transform.getFreeCameraOptions().orientation.value());
}
TEST(Transform, FreeCameraOptionsInvalidZ) {
Transform transform;
transform.resize({100, 100});
FreeCameraOptions options;
// Invalid z-value (<= 0.0 || > 1) should be clamped to respect both min&max zoom values
options.position = vec3{{0.1, 0.1, 0.0}};
transform.setFreeCameraOptions(options);
EXPECT_DOUBLE_EQ(transform.getState().getMaxZoom(), transform.getState().getZoom());
EXPECT_GT(transform.getFreeCameraOptions().position.value()[2], 0.0);
options.position = vec3{{0.5, 0.2, 123.456}};
transform.setFreeCameraOptions(options);
EXPECT_DOUBLE_EQ(transform.getState().getMinZoom(), transform.getState().getZoom());
EXPECT_LE(transform.getFreeCameraOptions().position.value()[2], 1.0);
}
TEST(Transform, FreeCameraOptionsInvalidOrientation) {
// Invalid orientations that cannot be clamped into a valid range
Transform transform;
transform.resize({100, 100});
FreeCameraOptions options;
options.orientation = vec4{{0.0, 0.0, 0.0, 0.0}};
transform.setFreeCameraOptions(options);
EXPECT_EQ(Quaternion::identity.m, transform.getFreeCameraOptions().orientation);
// Gimbal lock. Both forward and up vectors are on xy-plane
options.orientation = Quaternion::fromAxisAngle(vec3{{0.0, 1.0, 0.0}}, M_PI_2).m;
transform.setFreeCameraOptions(options);
EXPECT_EQ(Quaternion::identity.m, transform.getFreeCameraOptions().orientation);
// Camera is upside down
options.orientation = Quaternion::fromAxisAngle(vec3{{1.0, 0.0, 0.0}}, M_PI_2 + M_PI_4).m;
transform.setFreeCameraOptions(options);
EXPECT_EQ(Quaternion::identity.m, transform.getFreeCameraOptions().orientation);
}
TEST(Transform, FreeCameraOptionsSetOrientation) {
Transform transform;
transform.resize({100, 100});
FreeCameraOptions options;
options.orientation = Quaternion::identity.m;
transform.setFreeCameraOptions(options);
EXPECT_DOUBLE_EQ(0.0, transform.getState().getBearing());
EXPECT_DOUBLE_EQ(0.0, transform.getState().getPitch());
EXPECT_DOUBLE_EQ(0.0, transform.getState().getX());
EXPECT_DOUBLE_EQ(0.0, transform.getState().getY());
options.orientation = Quaternion::fromAxisAngle(vec3{{1.0, 0.0, 0.0}}, -60.0 * util::DEG2RAD).m;
transform.setFreeCameraOptions(options);
EXPECT_DOUBLE_EQ(0.0, transform.getState().getBearing());
EXPECT_DOUBLE_EQ(60.0 * util::DEG2RAD, transform.getState().getPitch());
EXPECT_DOUBLE_EQ(0.0, transform.getState().getX());
EXPECT_DOUBLE_EQ(206.0, transform.getState().getY());
options.orientation = Quaternion::fromAxisAngle(vec3{{0.0, 0.0, 1.0}}, 56.0 * util::DEG2RAD).m;
transform.setFreeCameraOptions(options);
EXPECT_DOUBLE_EQ(-56.0 * util::DEG2RAD, transform.getState().getBearing());
EXPECT_DOUBLE_EQ(0.0, transform.getState().getPitch());
EXPECT_DOUBLE_EQ(0.0, transform.getState().getX());
EXPECT_NEAR(152.192378, transform.getState().getY(), 1e-6);
options.orientation = Quaternion::fromEulerAngles(0.0, 0.0, -179.0 * util::DEG2RAD)
.multiply(Quaternion::fromEulerAngles(-30.0 * util::DEG2RAD, 0.0, 0.0))
.m;
transform.setFreeCameraOptions(options);
EXPECT_DOUBLE_EQ(179.0 * util::DEG2RAD, transform.getState().getBearing());
EXPECT_DOUBLE_EQ(30.0 * util::DEG2RAD, transform.getState().getPitch());
EXPECT_NEAR(1.308930, transform.getState().getX(), 1e-6);
EXPECT_NEAR(56.813889, transform.getState().getY(), 1e-6);
}
static std::tuple<vec3, vec3, vec3> rotatedFrame(const std::array<double, 4>& quaternion) {
Quaternion q(quaternion);
return std::make_tuple(
q.transform({{1.0, 0.0, 0.0}}), q.transform({{0.0, -1.0, 0.0}}), q.transform({{0.0, 0.0, -1.0}}));
}
TEST(Transform, FreeCameraOptionsClampPitch) {
Transform transform;
transform.resize({100, 100});
FreeCameraOptions options;
vec3 right, up, forward;
options.orientation = Quaternion::fromAxisAngle(vec3{{1.0, 0.0, 0.0}}, -85.0 * util::DEG2RAD).m;
transform.setFreeCameraOptions(options);
EXPECT_DOUBLE_EQ(util::PITCH_MAX, transform.getState().getPitch());
std::tie(right, up, forward) = rotatedFrame(transform.getFreeCameraOptions().orientation.value());
EXPECT_THAT(right, Vec3NearEquals(vec3{{1.0, 0.0, 0.0}}));
EXPECT_THAT(up, Vec3NearEquals(vec3{{0, -0.5, 0.866025}}));
EXPECT_THAT(forward, Vec3NearEquals(vec3{{0, -0.866025, -0.5}}));
}
TEST(Transform, FreeCameraOptionsClampToBounds) {
Transform transform;
transform.resize({100, 100});
transform.setConstrainMode(ConstrainMode::WidthAndHeight);
transform.jumpTo(CameraOptions().withZoom(8.56));
FreeCameraOptions options;
// Place camera to an arbitrary position looking away from the map
options.position = vec3{{-100.0, -10000.0, 1000.0}};
options.orientation = Quaternion::fromEulerAngles(-45.0 * util::DEG2RAD, 0.0, 0.0).m;
transform.setFreeCameraOptions(options);
// Map center should be clamped to width/2 pixels away from map borders
EXPECT_DOUBLE_EQ(206.0, transform.getState().getX());
EXPECT_DOUBLE_EQ(206.0, transform.getState().getY());
EXPECT_DOUBLE_EQ(0.0, transform.getState().getBearing());
EXPECT_DOUBLE_EQ(45.0 * util::DEG2RAD, transform.getState().getPitch());
vec3 right, up, forward;
std::tie(right, up, forward) = rotatedFrame(transform.getFreeCameraOptions().orientation.value());
EXPECT_THAT(transform.getFreeCameraOptions().position.value(),
Vec3NearEquals(vec3{{0.0976562, 0.304816, 0.20716}}));
EXPECT_THAT(right, Vec3NearEquals(vec3{{1.0, 0.0, 0.0}}));
EXPECT_THAT(up, Vec3NearEquals(vec3{{0, -0.707107, 0.707107}}));
EXPECT_THAT(forward, Vec3NearEquals(vec3{{0, -0.707107, -0.707107}}));
}
TEST(Transform, FreeCameraOptionsInvalidState) {
Transform transform;
// Invalid size
EXPECT_DOUBLE_EQ(0.0, transform.getState().getX());
EXPECT_DOUBLE_EQ(0.0, transform.getState().getY());
EXPECT_DOUBLE_EQ(0.0, transform.getState().getBearing());
EXPECT_DOUBLE_EQ(0.0, transform.getState().getPitch());
const auto options = transform.getFreeCameraOptions();
EXPECT_THAT(options.position.value(), Vec3NearEquals(vec3{{0.0, 0.0, 0.0}}));
}
TEST(Transform, FreeCameraOptionsOrientationRoll) {
Transform transform;
FreeCameraOptions options;
transform.resize({100, 100});
const auto orientationWithoutRoll = Quaternion::fromEulerAngles(-M_PI_4, 0.0, 0.0);
const auto orientationWithRoll = orientationWithoutRoll.multiply(Quaternion::fromEulerAngles(0.0, 0.0, M_PI_4));
options.orientation = orientationWithRoll.m;
transform.setFreeCameraOptions(options);
options = transform.getFreeCameraOptions();
EXPECT_NEAR(options.orientation.value()[0], orientationWithoutRoll.x, 1e-9);
EXPECT_NEAR(options.orientation.value()[1], orientationWithoutRoll.y, 1e-9);
EXPECT_NEAR(options.orientation.value()[2], orientationWithoutRoll.z, 1e-9);
EXPECT_NEAR(options.orientation.value()[3], orientationWithoutRoll.w, 1e-9);
EXPECT_NEAR(45.0 * util::DEG2RAD, transform.getState().getPitch(), 1e-9);
EXPECT_NEAR(0.0, transform.getState().getBearing(), 1e-9);
EXPECT_NEAR(0.0, transform.getState().getX(), 1e-9);
EXPECT_NEAR(150.0, transform.getState().getY(), 1e-9);
}
TEST(Transform, FreeCameraOptionsStateSynchronization) {
Transform transform;
transform.resize({100, 100});
vec3 right, up, forward;
transform.jumpTo(CameraOptions().withPitch(0.0).withBearing(0.0));
std::tie(right, up, forward) = rotatedFrame(transform.getFreeCameraOptions().orientation.value());
EXPECT_THAT(transform.getFreeCameraOptions().position.value(), Vec3NearEquals(vec3{{0.5, 0.5, 0.29296875}}));
EXPECT_THAT(right, Vec3NearEquals(vec3{{1.0, 0.0, 0.0}}));
EXPECT_THAT(up, Vec3NearEquals(vec3{{0.0, -1.0, 0.0}}));
EXPECT_THAT(forward, Vec3NearEquals(vec3{{0.0, 0.0, -1.0}}));
transform.jumpTo(CameraOptions().withCenter(LatLng{60.1699, 24.9384}));
EXPECT_THAT(transform.getFreeCameraOptions().position.value(),
Vec3NearEquals(vec3{{0.569273, 0.289453, 0.292969}}));
transform.jumpTo(CameraOptions().withPitch(20.0).withBearing(77.0).withCenter(LatLng{-20.0, 20.0}));
EXPECT_THAT(transform.getFreeCameraOptions().position.value(), Vec3NearEquals(vec3{{0.457922, 0.57926, 0.275301}}));
// Invalid pitch
transform.jumpTo(CameraOptions().withPitch(-10.0).withBearing(0.0));
std::tie(right, up, forward) = rotatedFrame(transform.getFreeCameraOptions().orientation.value());
EXPECT_THAT(transform.getFreeCameraOptions().position.value(),
Vec3NearEquals(vec3{{0.555556, 0.556719, 0.292969}}));
EXPECT_THAT(right, Vec3NearEquals(vec3{{1.0, 0.0, 0.0}}));
EXPECT_THAT(up, Vec3NearEquals(vec3{{0.0, -1.0, 0.0}}));
EXPECT_THAT(forward, Vec3NearEquals(vec3{{0.0, 0.0, -1.0}}));
transform.jumpTo(CameraOptions().withPitch(85.0).withBearing(0.0).withCenter(LatLng{-80.0, 0.0}));
std::tie(right, up, forward) = rotatedFrame(transform.getFreeCameraOptions().orientation.value());
EXPECT_THAT(transform.getFreeCameraOptions().position.value(), Vec3NearEquals(vec3{{0.5, 1.14146, 0.146484}}));
EXPECT_THAT(right, Vec3NearEquals(vec3{{1.0, 0.0, 0.0}}));
EXPECT_THAT(up, Vec3NearEquals(vec3{{0, -0.5, 0.866025}}));
EXPECT_THAT(forward, Vec3NearEquals(vec3{{0, -0.866025, -0.5}}));
}

259
test/util/camera.test.cpp Normal file
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@@ -0,0 +1,259 @@
#include <mbgl/test/util.hpp>
#include <mbgl/map/camera.hpp>
#include <mbgl/util/mat3.hpp>
#include <mbgl/util/quaternion.hpp>
#include <gmock/gmock.h>
using namespace mbgl;
static const double abs_double_error = 1e-7;
MATCHER_P(Vec3NearEquals, vec, "") {
return std::fabs(vec[0] - arg[0]) <= abs_double_error && std::fabs(vec[1] - arg[1]) <= abs_double_error &&
std::fabs(vec[2] - arg[2]) <= abs_double_error;
}
TEST(FreeCameraOptions, SetLocation) {
FreeCameraOptions options;
options.setLocation({{0.0, 0.0}, util::EARTH_RADIUS_M * M_PI});
ASSERT_TRUE(options.position);
ASSERT_THAT(options.position.value(), Vec3NearEquals(vec3{{0.5, 0.5, 0.5}}));
options.setLocation({{25.0, -180.0}, 1000.0});
ASSERT_TRUE(options.position);
ASSERT_THAT(options.position.value(), Vec3NearEquals(vec3{{0.0, 0.4282409625, 0.000027532812465}}));
options.setLocation(
{{util::LATITUDE_MAX, 0.0}, util::EARTH_RADIUS_M * M_PI * std::cos(util::LATITUDE_MAX * util::DEG2RAD)});
ASSERT_TRUE(options.position);
ASSERT_THAT(options.position.value(), Vec3NearEquals(vec3{{0.5, 0.0, 0.5}}));
options.setLocation(
{{-util::LATITUDE_MAX, 0.0}, util::EARTH_RADIUS_M * M_PI * std::cos(-util::LATITUDE_MAX * util::DEG2RAD)});
ASSERT_TRUE(options.position);
ASSERT_THAT(options.position.value(), Vec3NearEquals(vec3{{0.5, 1.0, 0.5}}));
}
TEST(FreeCameraOptions, SetLocationNegativeAltitude) {
FreeCameraOptions options;
options.setLocation({{0.0, 0.0}, -100.0});
ASSERT_TRUE(options.position);
ASSERT_DOUBLE_EQ(options.position.value()[2], -100.0 / util::M2PI / util::EARTH_RADIUS_M);
}
TEST(FreeCameraOptions, SetLocationUnwrappedLocation) {
FreeCameraOptions options;
options.setLocation({{0.0, -540.0}, 0.0});
ASSERT_TRUE(options.position);
ASSERT_THAT(options.position.value(), Vec3NearEquals(vec3{{-1.0, 0.5, 0.0}}));
}
TEST(FreeCameraOptions, GetLocation) {
FreeCameraOptions options;
LatLngAltitude latLngAltitude;
options.position = vec3{{0.5, 0.5, 0.5}};
ASSERT_TRUE(options.getLocation());
latLngAltitude = options.getLocation().value();
ASSERT_DOUBLE_EQ(latLngAltitude.location.latitude(), 0.0);
ASSERT_DOUBLE_EQ(latLngAltitude.location.longitude(), 0.0);
ASSERT_DOUBLE_EQ(latLngAltitude.altitude, 20037508.342789244);
options.position = vec3{{0.0, 0.4282409625, 0.000027532812465}};
ASSERT_TRUE(options.getLocation());
latLngAltitude = options.getLocation().value();
ASSERT_NEAR(latLngAltitude.location.latitude(), 25.0, 1e-7);
ASSERT_NEAR(latLngAltitude.location.longitude(), -180.0, 1e-7);
ASSERT_NEAR(latLngAltitude.altitude, 1000.0, 1e-7);
options.position = vec3{{0.5, 0.0, 0.5}};
ASSERT_TRUE(options.getLocation());
latLngAltitude = options.getLocation().value();
ASSERT_NEAR(latLngAltitude.location.latitude(), util::LATITUDE_MAX, 1e-7);
ASSERT_NEAR(latLngAltitude.location.longitude(), 0.0, 1e-7);
ASSERT_NEAR(latLngAltitude.altitude, 1728570.489074, 1e-6);
}
TEST(FreeCameraOptions, GetLocationInvalidPosition) {
FreeCameraOptions options;
// Mercator position not set. Should return nothing
ASSERT_FALSE(options.getLocation());
// Invalid latitude
options.position = vec3{{0.0, -0.1, 0.0}};
ASSERT_FALSE(options.getLocation());
options.position = vec3{{0.0, 2.0, 0.0}};
ASSERT_FALSE(options.getLocation());
}
TEST(FreeCameraOptions, GetLocationNegativeAltitude) {
FreeCameraOptions options;
options.position = vec3{{0.5, 0.5, -0.25}};
const auto latLngAltitude = options.getLocation();
ASSERT_TRUE(latLngAltitude);
ASSERT_DOUBLE_EQ(latLngAltitude->altitude, -0.5 * util::EARTH_RADIUS_M * M_PI);
}
TEST(FreeCameraOptions, GetLocationUnwrappedPosition) {
FreeCameraOptions options;
options.position = vec3{{1.25, 0.5, 0.0}};
const auto latLngAltitude = options.getLocation();
ASSERT_TRUE(latLngAltitude);
ASSERT_DOUBLE_EQ(latLngAltitude->location.longitude(), 270.0);
ASSERT_DOUBLE_EQ(latLngAltitude->location.latitude(), 0.0);
ASSERT_DOUBLE_EQ(latLngAltitude->altitude, 0.0);
}
static std::tuple<vec3, vec3, vec3> rotatedFrame(const std::array<double, 4>& quaternion) {
Quaternion q(quaternion);
return std::make_tuple(
q.transform({{1.0, 0.0, 0.0}}), q.transform({{0.0, -1.0, 0.0}}), q.transform({{0.0, 0.0, -1.0}}));
}
TEST(FreeCameraOptions, LookAtPoint) {
FreeCameraOptions options;
vec3 right, up, forward;
const double cosPi4 = 1.0 / std::sqrt(2.0);
// Pitch: 45, bearing: 0
options.position = vec3{{0.5, 0.5, 0.5}};
options.lookAtPoint({util::LATITUDE_MAX, 0.0});
ASSERT_TRUE(options.orientation);
std::tie(right, up, forward) = rotatedFrame(options.orientation.value());
ASSERT_THAT(right, Vec3NearEquals(vec3{{1.0, 0.0, 0.0}}));
ASSERT_THAT(up, Vec3NearEquals(vec3{{0.0, -cosPi4, cosPi4}}));
ASSERT_THAT(forward, Vec3NearEquals(vec3{{0.0, -cosPi4, -cosPi4}}));
// Look directly to east
options.position = vec3{{0.5, 0.5, 0.0}};
options.lookAtPoint({0.0, 30.0});
ASSERT_TRUE(options.orientation);
std::tie(right, up, forward) = rotatedFrame(options.orientation.value());
ASSERT_THAT(right, Vec3NearEquals(vec3{{0.0, 1.0, 0.0}}));
ASSERT_THAT(up, Vec3NearEquals(vec3{{0.0, 0.0, 1.0}}));
ASSERT_THAT(forward, Vec3NearEquals(vec3{{1.0, 0.0, 0.0}}));
// Pitch: 0, bearing: 0
options.setLocation({{60.1699, 24.9384}, 100.0});
options.lookAtPoint({60.1699, 24.9384}, vec3{{0.0, -1.0, 0.0}});
ASSERT_TRUE(options.orientation);
std::tie(right, up, forward) = rotatedFrame(options.orientation.value());
ASSERT_THAT(right, Vec3NearEquals(vec3{{1.0, 0.0, 0.0}}));
ASSERT_THAT(up, Vec3NearEquals(vec3{{0.0, -1.0, 0.0}}));
ASSERT_THAT(forward, Vec3NearEquals(vec3{{0.0, 0.0, -1.0}}));
// Pitch: 0, bearing: 45
options.setLocation({{60.1699, 24.9384}, 100.0});
options.lookAtPoint({60.1699, 24.9384}, vec3{{-1.0, -1.0, 0.0}});
ASSERT_TRUE(options.orientation);
std::tie(right, up, forward) = rotatedFrame(options.orientation.value());
ASSERT_THAT(right, Vec3NearEquals(vec3{{cosPi4, -cosPi4, 0.0}}));
ASSERT_THAT(up, Vec3NearEquals(vec3{{-cosPi4, -cosPi4, 0.0}}));
ASSERT_THAT(forward, Vec3NearEquals(vec3{{0.0, 0.0, -1.0}}));
// Looking south, up vector almost same as forward vector
options.setLocation({{37.7749, 122.4194}, 0.0});
options.lookAtPoint({37.5, 122.4194}, vec3{{0.0, 1.0, 0.00001}});
ASSERT_TRUE(options.orientation);
std::tie(right, up, forward) = rotatedFrame(options.orientation.value());
ASSERT_THAT(right, Vec3NearEquals(vec3{{-1.0, 0.0, 0.0}}));
ASSERT_THAT(up, Vec3NearEquals(vec3{{0.0, 0.0, 1.0}}));
ASSERT_THAT(forward, Vec3NearEquals(vec3{{0.0, 1.0, 0.0}}));
// Orientation with roll-component
options.setLocation({{-33.8688, 151.2093}, 0.0});
options.lookAtPoint({-33.8688, 160.0}, vec3{{0.0, -1.0, 0.1}});
ASSERT_TRUE(options.orientation);
std::tie(right, up, forward) = rotatedFrame(options.orientation.value());
ASSERT_THAT(right, Vec3NearEquals(vec3{{0.0, 1.0, 0.0}}));
ASSERT_THAT(up, Vec3NearEquals(vec3{{0.0, 0.0, 1.0}}));
ASSERT_THAT(forward, Vec3NearEquals(vec3{{1.0, 0.0, 0.0}}));
// Up vector pointing downwards
options.position = vec3{{0.5, 0.5, 0.5}};
options.lookAtPoint({util::LATITUDE_MAX, 0.0}, vec3{{0.0, 0.0, -0.5}});
ASSERT_TRUE(options.orientation);
std::tie(right, up, forward) = rotatedFrame(options.orientation.value());
ASSERT_THAT(right, Vec3NearEquals(vec3{{1.0, 0.0, 0.0}}));
ASSERT_THAT(up, Vec3NearEquals(vec3{{0.0, -cosPi4, cosPi4}}));
ASSERT_THAT(forward, Vec3NearEquals(vec3{{0.0, -cosPi4, -cosPi4}}));
}
TEST(FreeCameraOptions, LookAtPointInvalidInput) {
FreeCameraOptions options;
// Position not set
options.orientation = vec4{{0.0, 0.0, 0.0, 0.0}};
options.lookAtPoint({0.0, 0.0});
ASSERT_FALSE(options.orientation);
// Target same as position
options.orientation = vec4{{0.0, 0.0, 0.0, 0.0}};
options.position = vec3{{0.5, 0.5, 0.0}};
options.lookAtPoint({0.0, 0.0});
ASSERT_FALSE(options.orientation);
// Camera looking directly down without an explicit up vector
options.orientation = vec4{{0.0, 0.0, 0.0, 0.0}};
options.position = vec3{{0.5, 0.5, 0.5}};
options.lookAtPoint({0.0, 0.0});
ASSERT_FALSE(options.orientation);
// Zero up vector
options.orientation = vec4{{0.0, 0.0, 0.0, 0.0}};
options.lookAtPoint({0.0, 0.0}, vec3{{0.0, 0.0, 0.0}});
ASSERT_FALSE(options.orientation);
// Up vector same as direction
options.orientation = vec4{{0.0, 0.0, 0.0, 0.0}};
options.lookAtPoint({0.0, 0.0}, vec3{{0.0, 0.0, -1.0}});
ASSERT_FALSE(options.orientation);
}
TEST(FreeCameraOptions, SetPitchBearing) {
FreeCameraOptions options;
vec3 right, up, forward;
options.setPitchBearing(0.0, 0.0);
ASSERT_TRUE(options.orientation);
std::tie(right, up, forward) = rotatedFrame(options.orientation.value());
ASSERT_THAT(right, Vec3NearEquals(vec3{{1.0, 0.0, 0.0}}));
ASSERT_THAT(up, Vec3NearEquals(vec3{{0.0, -1.0, 0.0}}));
ASSERT_THAT(forward, Vec3NearEquals(vec3{{0.0, 0.0, -1.0}}));
options.setPitchBearing(0.0, 180.0);
ASSERT_TRUE(options.orientation);
std::tie(right, up, forward) = rotatedFrame(options.orientation.value());
ASSERT_THAT(right, Vec3NearEquals(vec3{{-1.0, 0.0, 0.0}}));
ASSERT_THAT(up, Vec3NearEquals(vec3{{0.0, 1.0, 0.0}}));
ASSERT_THAT(forward, Vec3NearEquals(vec3{{0.0, 0.0, -1.0}}));
const double cos60 = std::cos(60.0 * util::DEG2RAD);
const double sin60 = std::sin(60.0 * util::DEG2RAD);
options.setPitchBearing(60.0, 0.0);
ASSERT_TRUE(options.orientation);
std::tie(right, up, forward) = rotatedFrame(options.orientation.value());
ASSERT_THAT(right, Vec3NearEquals(vec3{{1.0, 0.0, 0.0}}));
ASSERT_THAT(up, Vec3NearEquals(vec3{{0.0, -cos60, sin60}}));
ASSERT_THAT(forward, Vec3NearEquals(vec3{{0.0, -sin60, -cos60}}));
options.setPitchBearing(60.0, -450);
ASSERT_TRUE(options.orientation);
std::tie(right, up, forward) = rotatedFrame(options.orientation.value());
ASSERT_THAT(right, Vec3NearEquals(vec3{{0.0, 1.0, 0.0}}));
ASSERT_THAT(up, Vec3NearEquals(vec3{{cos60, 0.0, sin60}}));
ASSERT_THAT(forward, Vec3NearEquals(vec3{{sin60, 0.0, -cos60}}));
}