Exemplos de IvVector3::Zero em C++ (Cpp)

Exemplo n.º 1

Arquivo: Game.cpp Projeto: Angeldude/essentialmath

//-------------------------------------------------------------------------------
// @ Game::Update()
//-------------------------------------------------------------------------------
// Main update loop
//-------------------------------------------------------------------------------
void
Game::UpdateObjects( float dt )
{
    // set up triangle translation
    IvVector3 xlate;
    xlate.Zero();
    if (IvGame::mGame->mEventHandler->IsKeyDown('k'))
    {
        xlate -= 3.0f*dt*IvVector3::xAxis;
    }
    if (IvGame::mGame->mEventHandler->IsKeyDown('i'))
    {
        xlate += 3.0f*dt*IvVector3::xAxis;
    }
    if (IvGame::mGame->mEventHandler->IsKeyDown('l'))
    {
        xlate -= 3.0f*dt*IvVector3::yAxis;
    }
    if (IvGame::mGame->mEventHandler->IsKeyDown('j'))
    {
        xlate += 3.0f*dt*IvVector3::yAxis;
    }
    mPosition += xlate;
    
    // clear transforms
    if (IvGame::mGame->mEventHandler->IsKeyDown(' '))
    {
        mPosition.Set( 0.0f, -0.5f, 0.0f );
    }
    
}   // End of Game::Update()

Exemplo n.º 2

Arquivo: Player.cpp Projeto: dtbinh/essentialmath

//-------------------------------------------------------------------------------
// @ Player::Update()
//-------------------------------------------------------------------------------
// Main update loop
//-------------------------------------------------------------------------------
void
Player::Update( float dt )
{
    // get scale, rotate, translate for this frame
    float s = 1.0f;
    float r = 0.0f;
    
    // set up scaling
    if (IvGame::mGame->mEventHandler->IsKeyDown(';'))
    {
        s -= 0.25f*dt;
    }
    if (IvGame::mGame->mEventHandler->IsKeyDown('p'))
    {
        s += 0.25f*dt;
    }
    mScale *= s;
    
    // set up rotate
    if (IvGame::mGame->mEventHandler->IsKeyDown('o'))
    {
        r -= kPI*0.25f*dt;
    }
    if (IvGame::mGame->mEventHandler->IsKeyDown('u'))
    {
        r += kPI*0.25f*dt;
    }
    IvMatrix33 rotate;
    rotate.RotationZ(r);
    mRotate = rotate*mRotate;
    
    // set up translation
    IvVector3 xlate;
    xlate.Zero();
    if (IvGame::mGame->mEventHandler->IsKeyDown('k'))
    {
        xlate.x -= 3.0f*dt;
    }
    if (IvGame::mGame->mEventHandler->IsKeyDown('i'))
    {
        xlate.x += 3.0f*dt;
    }
    if (IvGame::mGame->mEventHandler->IsKeyDown('l'))
    {
        xlate.y -= 3.0f*dt;
    }
    if (IvGame::mGame->mEventHandler->IsKeyDown('j'))
    {
        xlate.y += 3.0f*dt;
    }
    mTranslate += xlate;
    
    // clear transform
    if (IvGame::mGame->mEventHandler->IsKeyDown(' '))
    {
        mRotate.Identity();
        mScale = 1.0f;
        mTranslate.Zero();
    }
}   // End of Player::Update()

Exemplo n.º 3

Arquivo: IvQuat.cpp Projeto: kristofe/GameEngine

//-------------------------------------------------------------------------------
// @ IvQuat::GetAxisAngle()
//-------------------------------------------------------------------------------
// Get axis-angle based on quaternion
//-------------------------------------------------------------------------------
void
IvQuat::GetAxisAngle( IvVector3& axis, float& angle )
{
    angle = 2.0f*acosf( w );
    float length = ::IvSqrt( 1.0f - w*w );
    if ( ::IsZero(length) )
        axis.Zero();
    else
    {
        length = 1.0f/length;
        axis.Set( x*length, y*length, z*length );
    }

}   // End of IvQuat::GetAxisAngle()

Exemplo n.º 4

Arquivo: Player.cpp Projeto: Angeldude/essentialmath

//-------------------------------------------------------------------------------
// @ Player::Update()
//-------------------------------------------------------------------------------
// Main update loop
//-------------------------------------------------------------------------------
void
Player::Update( float dt )
{
    // get scale, rotate, translate for this frame
    float s = 1.0f;
    float r = 0.0f;
    
    // set up scaling
    if (IvGame::mGame->mEventHandler->IsKeyDown(';'))
    {
        s -= 0.25f*dt;
    }
    if (IvGame::mGame->mEventHandler->IsKeyDown('p'))
    {
        s += 0.25f*dt;
    }
    mScale *= s;
    
    // set up rotate
    if (IvGame::mGame->mEventHandler->IsKeyDown('o'))
    {
        r -= kPI*0.25f*dt;
    }
    if (IvGame::mGame->mEventHandler->IsKeyDown('u'))
    {
        r += kPI*0.25f*dt;
    }
    IvMatrix33 rotate;
    rotate.RotationZ(r);
    mRotate = rotate*mRotate;
    
    // set up translation
    IvVector3 xlate;
    xlate.Zero();
    if (IvGame::mGame->mEventHandler->IsKeyDown('k'))
    {
        xlate.x -= 3.0f*dt;
    }
    if (IvGame::mGame->mEventHandler->IsKeyDown('i'))
    {
        xlate.x += 3.0f*dt;
    }
    if (IvGame::mGame->mEventHandler->IsKeyDown('l'))
    {
        xlate.y -= 3.0f*dt;
    }
    if (IvGame::mGame->mEventHandler->IsKeyDown('j'))
    {
        xlate.y += 3.0f*dt;
    }
    mTranslate += xlate;
    
    // clear transform
    if (IvGame::mGame->mEventHandler->IsKeyPressed(' '))
    {
        mRotate.Identity();
        mScale = 1.0f;
        mTranslate.Zero();
    }

    // change texture
    if (IvGame::mGame->mEventHandler->IsKeyPressed('t'))
    {
        mCurrentBlendTexIndex = (mCurrentBlendTexIndex + 1) % NUM_BLEND_TEX;
    }

    // change blending mode
    if (IvGame::mGame->mEventHandler->IsKeyPressed('b'))
    {
        mBlendMode = (BlendMode)((mBlendMode + 1) % kBlendModeCount);
    }
}   // End of Player::Update()