79 lines
2.6 KiB
C++
79 lines
2.6 KiB
C++
#include <gtest/gtest.h>
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#include "Viewport/SceneViewportCameraController.h"
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#include <XCEngine/Components/GameObject.h>
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#include <cmath>
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namespace {
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bool NearlyEqual(float lhs, float rhs, float epsilon = 1e-4f) {
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return std::abs(lhs - rhs) <= epsilon;
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}
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bool NearlyEqual(const XCEngine::Math::Vector3& lhs, const XCEngine::Math::Vector3& rhs, float epsilon = 1e-4f) {
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return NearlyEqual(lhs.x, rhs.x, epsilon) &&
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NearlyEqual(lhs.y, rhs.y, epsilon) &&
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NearlyEqual(lhs.z, rhs.z, epsilon);
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}
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} // namespace
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using XCEngine::Components::GameObject;
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using XCEngine::Editor::SceneViewportCameraController;
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using XCEngine::Editor::SceneViewportCameraInputState;
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using XCEngine::Math::Vector3;
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TEST(SceneViewportCameraController_Test, ApplyToMatchesComputedPositionAndForward) {
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SceneViewportCameraController controller;
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controller.Reset();
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controller.Focus(Vector3(2.0f, 1.0f, -3.0f));
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GameObject cameraObject("EditorCamera");
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controller.ApplyTo(*cameraObject.GetTransform());
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EXPECT_TRUE(NearlyEqual(cameraObject.GetTransform()->GetPosition(), controller.GetPosition()));
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EXPECT_TRUE(NearlyEqual(
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cameraObject.GetTransform()->GetForward().Normalized(),
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controller.GetForward(),
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1e-3f));
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EXPECT_GT(Vector3::Dot(cameraObject.GetTransform()->GetUp().Normalized(), Vector3::Up()), 0.0f);
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}
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TEST(SceneViewportCameraController_Test, ApplyInputUpdatesOrbitPanAndZoomState) {
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SceneViewportCameraController controller;
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controller.Reset();
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const float initialDistance = controller.GetDistance();
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const float initialYaw = controller.GetYawDegrees();
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const float initialPitch = controller.GetPitchDegrees();
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const Vector3 initialFocus = controller.GetFocalPoint();
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SceneViewportCameraInputState input = {};
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input.viewportHeight = 720.0f;
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input.zoomDelta = 1.0f;
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input.orbitDeltaX = 20.0f;
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input.orbitDeltaY = -15.0f;
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input.panDeltaX = 16.0f;
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input.panDeltaY = -10.0f;
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controller.ApplyInput(input);
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EXPECT_LT(controller.GetDistance(), initialDistance);
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EXPECT_NE(controller.GetYawDegrees(), initialYaw);
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EXPECT_NE(controller.GetPitchDegrees(), initialPitch);
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EXPECT_FALSE(NearlyEqual(controller.GetFocalPoint(), initialFocus));
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}
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TEST(SceneViewportCameraController_Test, FocusMovesPivotWithoutChangingDistance) {
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SceneViewportCameraController controller;
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controller.Reset();
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const float initialDistance = controller.GetDistance();
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const Vector3 target(5.0f, -2.0f, 7.5f);
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controller.Focus(target);
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EXPECT_TRUE(NearlyEqual(controller.GetFocalPoint(), target));
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EXPECT_FLOAT_EQ(controller.GetDistance(), initialDistance);
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}
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