camera.cpp

/*

Pencil - Traditional Animation Software
Copyright (C) 2012-2017 Matthew Chiawen Chang

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; version 2 of the License.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

*/

#include "camera.h"

Camera::Camera()
{
}

Camera::Camera(QPointF translation, float rotation, float scaling)
{
    //view = viewMatrix;
    mTranslate = translation;
    mRotate = rotation;
    mScale = scaling;
    updateViewTransform();
}

Camera::~Camera()
{
}

void Camera::setViewTransform(QPointF translation, float rotation, float scaling)
{
    mTranslate = translation;
    mRotate = rotation;
    mScale = scaling;
    updateViewTransform();
}

void Camera::updateViewTransform()
{
    QTransform t;
    t.translate(mTranslate.x(), mTranslate.y());

    QTransform r;
    r.rotate(mRotate);

    QTransform s;
    s.scale(mScale, mScale);

    view = t * s * r;
}