101 lines
2.8 KiB
C++
101 lines
2.8 KiB
C++
// Copyright (C) 2002-2009 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#include "CSceneNodeAnimatorFlyCircle.h"
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namespace irr
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{
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namespace scene
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{
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//! constructor
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CSceneNodeAnimatorFlyCircle::CSceneNodeAnimatorFlyCircle(u32 time,
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const core::vector3df& center, f32 radius, f32 speed,
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const core::vector3df& direction, f32 radiusEllipsoid)
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: Center(center), Direction(direction), Radius(radius),
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RadiusEllipsoid(radiusEllipsoid), Speed(speed), StartTime(time)
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{
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#ifdef _DEBUG
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setDebugName("CSceneNodeAnimatorFlyCircle");
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#endif
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init();
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}
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void CSceneNodeAnimatorFlyCircle::init()
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{
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Direction.normalize();
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if (Direction.Y != 0)
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VecV = core::vector3df(50,0,0).crossProduct(Direction).normalize();
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else
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VecV = core::vector3df(0,50,0).crossProduct(Direction).normalize();
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VecU = VecV.crossProduct(Direction).normalize();
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}
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//! animates a scene node
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void CSceneNodeAnimatorFlyCircle::animateNode(ISceneNode* node, u32 timeMs)
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{
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if ( 0 == node )
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return;
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f32 time;
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// Check for the condition where the StartTime is in the future.
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if(StartTime > timeMs)
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time = ((s32)timeMs - (s32)StartTime) * Speed;
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else
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time = (timeMs-StartTime) * Speed;
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// node->setPosition(Center + Radius * ((VecU*cosf(time)) + (VecV*sinf(time))));
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f32 r2 = RadiusEllipsoid == 0.f ? Radius : RadiusEllipsoid;
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node->setPosition(Center + (Radius*cosf(time)*VecU) + (r2*sinf(time)*VecV ) );
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}
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//! Writes attributes of the scene node animator.
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void CSceneNodeAnimatorFlyCircle::serializeAttributes(io::IAttributes* out, io::SAttributeReadWriteOptions* options) const
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{
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out->addVector3d("Center", Center);
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out->addFloat("Radius", Radius);
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out->addFloat("Speed", Speed);
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out->addVector3d("Direction", Direction);
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out->addFloat("RadiusEllipsoid", Radius);
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}
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//! Reads attributes of the scene node animator.
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void CSceneNodeAnimatorFlyCircle::deserializeAttributes(io::IAttributes* in, io::SAttributeReadWriteOptions* options)
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{
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Center = in->getAttributeAsVector3d("Center");
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Radius = in->getAttributeAsFloat("Radius");
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Speed = in->getAttributeAsFloat("Speed");
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Direction = in->getAttributeAsVector3d("Direction");
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StartTime = 0;
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if (Direction.equals(core::vector3df(0,0,0)))
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Direction.set(0,1,0); // irrlicht 1.1 backwards compatibility
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else
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Direction.normalize();
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RadiusEllipsoid = in->getAttributeAsFloat("RadiusEllipsoid");
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init();
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}
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ISceneNodeAnimator* CSceneNodeAnimatorFlyCircle::createClone(ISceneNode* node, ISceneManager* newManager)
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{
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CSceneNodeAnimatorFlyCircle * newAnimator =
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new CSceneNodeAnimatorFlyCircle(StartTime, Center, Radius, Speed, Direction, RadiusEllipsoid);
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return newAnimator;
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}
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} // end namespace scene
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} // end namespace irr
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