aswi2021virtual-surreality-gitlab/deltarobot/gl/camera.cpp @ 6d9543aa

#include "camera.hpp"

const int Camera::MIN_DIST = 1000;
const int Camera::MAX_DIST = 40000;

Camera::Camera(): QMatrix4x4()
{
}

void Camera::set(QVector3D position)
{
    this->position = position;
    this->center = QVector3D(0.0f, 0.0f, 0.0f);
    lookAt();
}

void Camera::zoomIn()
{
    if (getPosition().length() > MIN_DIST)
    {
        position -= getVectorToPosition() * 0.1f;
        lookAt();
    }
}

void Camera::zoomOut()
{
    if (getPosition().length() < MAX_DIST)
    {
        position += getVectorToPosition() * 0.1f;
        lookAt();
    }
}

QVector3D Camera::getPosition()
{
    return position;
}

QVector3D Camera::getVectorToPosition()
{
    return position - center;
}

void Camera::lookAt()
{
    setToIdentity();
    QMatrix4x4::lookAt(position, center, QVector3D(0.0f, 1.0f, 0.0f));
}