void Camera::lookAt(const glm::vec4& target, const glm::vec4& up) {
// create an orthogonal matrix frame that is aimed at the target
glm::vec3 zAxis(glm::normalize(m_localTransform[3] - target));
glm::vec3 xAxis = glm::normalize(glm::cross(glm::vec3(up), zAxis));
glm::vec3 yAxis = glm::normalize(glm::cross(zAxis, xAxis));
m_localTransform[0] = glm::vec4(xAxis, 0);
m_localTransform[1] = glm::vec4(yAxis, 0);
m_localTransform[2] = glm::vec4(zAxis, 0);
updateGlobalTransform();
}
void Camera::lookAtFrom(const glm::vec3& eye,
const glm::vec3& target,
const glm::vec3& up) {
// create an orthogonal matrix frame that is aimed at the target from the eye position
glm::vec3 zAxis = glm::normalize(eye - target);
glm::vec3 xAxis = glm::normalize(glm::cross(up, zAxis));
glm::vec3 yAxis = glm::normalize(glm::cross(zAxis, xAxis));
m_localTransform[0] = glm::vec4(xAxis, 0);
m_localTransform[1] = glm::vec4(yAxis, 0);
m_localTransform[2] = glm::vec4(zAxis, 0);
m_localTransform[3] = glm::vec4(eye, 1);
updateGlobalTransform();
}
void Node::Update(sf32 time)
{
for ( su32 j = 0 ; j < Animators.size() ; j ++ )
{
NodeAnimator& animator = *( Animators[j] ) ;
animator.animate(time);
}
if ( _mTransformChanged )
{
updateGlobalTransform();
}
for ( su32 i = 0 ; i < Children.size() ; i ++ )
{
Node& node = *( Children[i] ) ;
node.Update(time);
}
}
