////  ImportDialog.cpp//  hifi////  Created by Clement Brisset on 8/12/13.//  Copyright (c) 2013 High Fidelity, Inc. All rights reserved.//#include "ImportDialog.h"#include "Application.h" #include <QStandardPaths>#include <QGridLayout>#include <QMouseEvent> const QString WINDOW_NAME                         = QObject::tr("Import Voxels");const QString IMPORT_BUTTON_NAME                  = QObject::tr("Import");const QString IMPORT_TO_CLIPBOARD_CHECKBOX_STRING = QObject::tr("Import into clipboard");const QString PREVIEW_CHECKBOX_STRING             = QObject::tr("Load preview");const QString IMPORT_FILE_TYPES                   = QObject::tr("Sparse Voxel Octree Files, "                                                                "Square PNG, "                                                                "Schematic Files "                                                                "(*.svo *.png *.schematic)"); const QString DESKTOP_LOCATION = QStandardPaths::writableLocation(QStandardPaths::DesktopLocation);  const glm::vec3 UP_VECT = glm::vec3(0, 1, 0);const float ANGULAR_RATE = 0.02f;const float VERTICAL_ANGLE = M_PI_4 / 2.0f;const float RETURN_RATE = 0.02f;const float NEAR_CLIP = 0.5f;const float FAR_CLIP = 10.0f;const float FIELD_OF_VIEW = 60.0f; class GLWidget : public QGLWidget {public:    GLWidget(QWidget* parent = NULL);    void setDraw(bool draw) {_draw = draw;}    void setTargetCenter(glm::vec3 targetCenter) { _targetCenter = targetCenter; } protected:    virtual void initializeGL();    virtual void resizeGL(int width, int height);    virtual void paintGL();     void mousePressEvent(QMouseEvent* event);    void mouseMoveEvent(QMouseEvent* event);    void mouseReleaseEvent(QMouseEvent* event); private:    VoxelSystem* _voxelSystem;     bool _draw;     double _a; // horizontal angle of the camera to the center of the object    double _h; // vertical angle of the camera to the center of the object    glm::vec3 _targetCenter;     bool _pressed;    int _mouseX;    int _mouseY;}; GLWidget::GLWidget(QWidget *parent)    : QGLWidget(parent, Application::getInstance()->getGLWidget()),      _draw(false),      _a(0.0f),      _h(VERTICAL_ANGLE),      _targetCenter(0.5f, 0.5f, 0.5f),      _pressed(false),      _mouseX(0),      _mouseY(0) {    _voxelSystem = Application::getInstance()->getSharedVoxelSystem();} void GLWidget::initializeGL() {    glEnable(GL_BLEND);    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);    glShadeModel (GL_SMOOTH);    glEnable(GL_DEPTH_TEST);} void GLWidget::resizeGL(int width, int height) {    glViewport(0, 0, width, height);     glMatrixMode(GL_PROJECTION);    glLoadIdentity();    gluPerspective(FIELD_OF_VIEW,                   (float) width / height,                   NEAR_CLIP,                   FAR_CLIP);} void GLWidget::paintGL() {    glEnable(GL_LINE_SMOOTH);    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);     glMatrixMode(GL_MODELVIEW);    glLoadIdentity();     if (!_pressed) {        _a += ANGULAR_RATE;        _h = (1.0f - RETURN_RATE) * _h + RETURN_RATE * VERTICAL_ANGLE;    }     gluLookAt(_targetCenter.x + (glm::length(_targetCenter) + NEAR_CLIP) * cos(_a),              _targetCenter.y + (glm::length(_targetCenter) + NEAR_CLIP) * sin(_h),              _targetCenter.z + (glm::length(_targetCenter) + NEAR_CLIP) * sin(_a),              _targetCenter.x, _targetCenter.y, _targetCenter.z,              UP_VECT.x, UP_VECT.y, UP_VECT.z);      if (_draw) {        glBegin(GL_LINES);        glColor3d(1, 1 ,1);        glVertex3d(0, 0, 0);        glVertex3d(1, 0, 0);         glVertex3d(0, 0, 0);        glVertex3d(0, 1, 0);         glVertex3d(0, 0, 0);        glVertex3d(0, 0, 1);          glColor3d(0.4f, 0.4f ,0.4f);        glVertex3d(2 * _targetCenter.x, 2 * _targetCenter.y, 2 * _targetCenter.z);        glVertex3d(0                  , 2 * _targetCenter.y, 2 * _targetCenter.z);         glVertex3d(2 * _targetCenter.x, 2 * _targetCenter.y, 2 * _targetCenter.z);        glVertex3d(2 * _targetCenter.x, 0                  , 2 * _targetCenter.z);         glVertex3d(2 * _targetCenter.x, 2 * _targetCenter.y, 2 * _targetCenter.z);        glVertex3d(2 * _targetCenter.x, 2 * _targetCenter.y, 0                  );        glEnd();         glScalef(1.0f / TREE_SCALE, 1.0f / TREE_SCALE, 1.0f / TREE_SCALE);        _voxelSystem->render(false);    }} void GLWidget::mousePressEvent(QMouseEvent* event) {    _pressed = true;    _mouseX = event->globalX();    _mouseY = event->globalY();} void GLWidget::mouseMoveEvent(QMouseEvent* event) {    _a += (M_PI * (event->globalX() - _mouseX)) / height();    _h += (M_PI * (event->globalY() - _mouseY)) / height();    _h = glm::clamp(_h, -M_PI_4, M_PI_4);     _mouseX = event->globalX();    _mouseY = event->globalY();} void GLWidget::mouseReleaseEvent(QMouseEvent* event) {    _pressed = false;} ImportDialog::ImportDialog(QWidget *parent)    : QFileDialog(parent, WINDOW_NAME, DESKTOP_LOCATION, IMPORT_FILE_TYPES),      _importButton      (IMPORT_BUTTON_NAME, this),      _clipboardImportBox(IMPORT_TO_CLIPBOARD_CHECKBOX_STRING, this),      _previewBox        (PREVIEW_CHECKBOX_STRING, this),      _previewBar        (this),      _glPreview         (new GLWidget(this)) {    setOption(QFileDialog::DontUseNativeDialog, true);    setFileMode(QFileDialog::ExistingFile);    setViewMode(QFileDialog::Detail);     QGridLayout* gridLayout = (QGridLayout*) layout();    gridLayout->addWidget(&_importButton      , 2, 2);    gridLayout->addWidget(&_clipboardImportBox, 2, 3);    gridLayout->addWidget(&_previewBox        , 3, 3);    gridLayout->addWidget(&_previewBar        , 0, 3);    gridLayout->addWidget(_glPreview          , 1, 3);    gridLayout->setColumnStretch(3, 1);     _previewBar.setVisible(false);    _previewBar.setRange(0, 100);    _previewBar.setValue(0);     connect(&_importButton, SIGNAL(pressed()), SLOT(import()));    connect(&_previewBox, SIGNAL(toggled(bool)), SIGNAL(previewToggled(bool)));    connect(&_previewBox, SIGNAL(toggled(bool)), SLOT(preview(bool)));     connect(this, SIGNAL(currentChanged(QString)), SLOT(saveCurrentFile(QString)));    connect(&_glTimer, SIGNAL(timeout()), SLOT(timer()));} ImportDialog::~ImportDialog() {    delete _glPreview;} void ImportDialog::init() {    VoxelSystem* voxelSystem = Application::getInstance()->getSharedVoxelSystem();    connect(voxelSystem, SIGNAL(importSize(float,float,float)), SLOT(setGLCamera(float,float,float)));    connect(voxelSystem, SIGNAL(importProgress(int)), &_previewBar, SLOT(setValue(int)));} void ImportDialog::import() {    _importButton.setDisabled(true);    _clipboardImportBox.setDisabled(true);    _previewBox.setDisabled(true);     _previewBar.setValue(0);    _previewBar.setVisible(true);     emit accepted();} void ImportDialog::accept() {    QFileDialog::accept();} void ImportDialog::reject() {    QFileDialog::reject();} int ImportDialog::exec() {    return QFileDialog::exec();} void ImportDialog::setGLCamera(float x, float y, float z) {    _glPreview->setTargetCenter(glm::vec3(x, y, z) / 2.0f);} void ImportDialog::reset() {    _previewBox.setChecked(false);    _previewBar.setVisible(false);    _previewBar.setValue(0);    _importButton.setEnabled(true);    _clipboardImportBox.setEnabled(true);    _previewBox.setEnabled(true);     _glTimer.stop();    _glPreview->setDraw(false);    _glPreview->updateGL();} void ImportDialog::preview(bool wantPreview) {    _previewBar.setValue(0);    _previewBar.setVisible(wantPreview);    _glPreview->setDraw(wantPreview);     if (wantPreview) {        _glTimer.start();    } else {        _glTimer.stop();        _glPreview->updateGL();    }} void ImportDialog::saveCurrentFile(QString filename) {    _currentFile = filename;} void ImportDialog::timer() {    _glPreview->updateGL();    _glTimer.start(16);}