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40 lines
1.3 KiB
C++
40 lines
1.3 KiB
C++
//
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// PhysicsHelpers.h
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// libraries/shared/src
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//
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// Created by Andrew Meadows 2015.01.27
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// Copyright 2015 High Fidelity, Inc.
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//
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// Distributed under the Apache License, Version 2.0.
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// See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
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//
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#ifndef hifi_PhysicsHelpers_h
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#define hifi_PhysicsHelpers_h
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#include <glm/glm.hpp>
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#include <glm/gtc/quaternion.hpp>
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#include <QUuid>
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// TODO: move everything in here to the physics library after the physics/entities library
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// dependency order is swapped.
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const int PHYSICS_ENGINE_MAX_NUM_SUBSTEPS = 6; // Bullet will start to "lose time" at 10 FPS.
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const float PHYSICS_ENGINE_FIXED_SUBSTEP = 1.0f / 90.0f;
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const float DYNAMIC_LINEAR_SPEED_THRESHOLD = 0.05f; // 5 cm/sec
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const float DYNAMIC_ANGULAR_SPEED_THRESHOLD = 0.087266f; // ~5 deg/sec
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const float KINEMATIC_LINEAR_SPEED_THRESHOLD = 0.001f; // 1 mm/sec
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const float KINEMATIC_ANGULAR_SPEED_THRESHOLD = 0.008f; // ~0.5 deg/sec
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// return incremental rotation (Bullet-style) caused by angularVelocity over timeStep
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glm::quat computeBulletRotationStep(const glm::vec3& angularVelocity, float timeStep);
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namespace Physics {
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int16_t getDefaultCollisionMask(int16_t group);
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void setSessionUUID(const QUuid& sessionID);
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const QUuid& getSessionUUID();
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};
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#endif // hifi_PhysicsHelpers_h
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