Merge pull request #288 from openscad/issue11_2

Issue11 2

1 files changed, 284 insertions, 0 deletions

diff --git a/src/QGLView.cc b/src/QGLView.cc
new file mode 100644
index 0000000..b23ba8e
--- /dev/null
+++ b/src/QGLView.cc
@@ -0,0 +1,284 @@
+/*
+ *  OpenSCAD (www.openscad.org)
+ *  Copyright (C) 2009-2011 Clifford Wolf <clifford@clifford.at> and
+ *                          Marius Kintel <marius@kintel.net>
+ *
+ *  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; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  As a special exception, you have permission to link this program
+ *  with the CGAL library and distribute executables, as long as you
+ *  follow the requirements of the GNU GPL in regard to all of the
+ *  software in the executable aside from CGAL.
+ *
+ *  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.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+
+#include "QGLView.h"
+#include "Preferences.h"
+#include "renderer.h"
+
+#include <QApplication>
+#include <QWheelEvent>
+#include <QCheckBox>
+#include <QDialogButtonBox>
+#include <QMouseEvent>
+#include <QMessageBox>
+#include <QPushButton>
+#include <QSettings>
+#include <QTimer>
+#include <QTextEdit>
+#include <QVBoxLayout>
+#include <QErrorMessage>
+#include "OpenCSGWarningDialog.h"
+
+#include "mathc99.h"
+#include <stdio.h>
+
+#ifdef ENABLE_OPENCSG
+#  include <opencsg.h>
+#endif
+
+QGLView::QGLView(QWidget *parent) : QGLWidget(parent)
+{
+  init();
+}
+
+QGLView::QGLView(const QGLFormat & format, QWidget *parent) : QGLWidget(format, parent)
+{
+  init();
+}
+
+static bool running_under_wine = false;
+
+void QGLView::init()
+{
+  cam.type = Camera::GIMBAL;
+  cam.object_rot << 35, 0, -25;
+  cam.object_trans << 0, 0, 0;
+  cam.viewer_distance = 500;
+
+  this->mouse_drag_active = false;
+  this->statusLabel = NULL;
+
+  setMouseTracking(true);
+
+// see paintGL() + issue160 + wine FAQ
+#ifdef _WIN32
+#include <windows.h>
+  HMODULE hntdll = GetModuleHandle(L"ntdll.dll");
+  if (hntdll)
+    if ( (void *)GetProcAddress(hntdll, "wine_get_version") )
+      running_under_wine = true;
+#endif
+}
+
+void QGLView::initializeGL()
+{
+  GLenum err = glewInit();
+  if (GLEW_OK != err) {
+    fprintf(stderr, "GLEW Error: %s\n", glewGetErrorString(err));
+  }
+  GLView::initializeGL();
+}
+
+std::string QGLView::getRendererInfo() const
+{
+  std::string glewinfo = glew_dump();
+  std::string glextlist = glew_extensions_dump();
+  return glewinfo + std::string("\nUsing QGLWidget\n\n") + glextlist;
+}
+
+#ifdef ENABLE_OPENCSG
+void QGLView::display_opencsg_warning()
+{
+    if (Preferences::inst()->getValue("advanced/opencsg_show_warning").toBool()) {
+      QTimer::singleShot(0, this, SLOT(display_opencsg_warning_dialog()));
+    }
+}
+
+void QGLView::display_opencsg_warning_dialog()
+{
+  OpenCSGWarningDialog *dialog = new OpenCSGWarningDialog(this);
+
+  QString message;
+  if (this->is_opencsg_capable) {
+    message += "Warning: You may experience OpenCSG rendering errors.\n\n";
+  }
+  else {
+    message += "Warning: Missing OpenGL capabilities for OpenCSG - OpenCSG has been disabled.\n\n";
+    dialog->enableOpenCSGBox->hide();
+  }
+  message += "It is highly recommended to use OpenSCAD on a system with "
+    "OpenGL 2.0 or later.\n"
+    "Your renderer information is as follows:\n";
+  QString rendererinfo;
+  rendererinfo.sprintf("GLEW version %s\n"
+                       "%s (%s)\n"
+                       "OpenGL version %s\n",
+                       glewGetString(GLEW_VERSION),
+                       glGetString(GL_RENDERER), glGetString(GL_VENDOR),
+                       glGetString(GL_VERSION));
+  message += rendererinfo;
+
+  dialog->setText(message);
+  dialog->enableOpenCSGBox->setChecked(Preferences::inst()->getValue("advanced/enable_opencsg_opengl1x").toBool());
+  dialog->exec();
+
+  opencsg_support = this->is_opencsg_capable && Preferences::inst()->getValue("advanced/enable_opencsg_opengl1x").toBool();
+}
+#endif
+
+void QGLView::resizeGL(int w, int h)
+{
+  GLView::resizeGL(w,h);
+  GLView::setupGimbalCamPerspective();
+}
+
+void QGLView::paintGL()
+{
+	GLView::gimbalCamPaintGL();
+
+  if (statusLabel) {
+    QString msg;
+    msg.sprintf("Viewport: translate = [ %.2f %.2f %.2f ], rotate = [ %.2f %.2f %.2f ], distance = %.2f",
+      -cam.object_trans.x(), -cam.object_trans.y(), -cam.object_trans.z(),
+      fmodf(360 - cam.object_rot.x() + 90, 360), fmodf(360 - cam.object_rot.y(), 360), fmodf(360 - cam.object_rot.z(), 360), cam.viewer_distance);
+    statusLabel->setText(msg);
+  }
+
+  if (running_under_wine) swapBuffers();
+}
+
+void QGLView::keyPressEvent(QKeyEvent *event)
+{
+  if (event->key() == Qt::Key_Plus) {
+    cam.viewer_distance *= 0.9;
+    updateGL();
+    return;
+  }
+  if (event->key() == Qt::Key_Minus) {
+    cam.viewer_distance /= 0.9;
+    updateGL();
+    return;
+  }
+}
+
+void QGLView::wheelEvent(QWheelEvent *event)
+{
+  cam.viewer_distance *= pow(0.9, event->delta() / 120.0);
+  updateGL();
+}
+
+void QGLView::mousePressEvent(QMouseEvent *event)
+{
+  mouse_drag_active = true;
+  last_mouse = event->globalPos();
+}
+
+void QGLView::normalizeAngle(GLdouble& angle)
+{
+  while(angle < 0)
+    angle += 360;
+  while(angle > 360)
+    angle -= 360;
+}
+
+void QGLView::mouseMoveEvent(QMouseEvent *event)
+{
+  QPoint this_mouse = event->globalPos();
+  double dx = (this_mouse.x()-last_mouse.x()) * 0.7;
+  double dy = (this_mouse.y()-last_mouse.y()) * 0.7;
+  if (mouse_drag_active) {
+    if (event->buttons() & Qt::LeftButton
+#ifdef Q_WS_MAC
+        && !(event->modifiers() & Qt::MetaModifier)
+#endif
+      ) {
+      // Left button rotates in xz, Shift-left rotates in xy
+      // On Mac, Ctrl-Left is handled as right button on other platforms
+      cam.object_rot.x() += dy;
+      if ((QApplication::keyboardModifiers() & Qt::ShiftModifier) != 0)
+        cam.object_rot.y() += dx;
+      else
+        cam.object_rot.z() += dx;
+
+      normalizeAngle(cam.object_rot.x());
+      normalizeAngle(cam.object_rot.y());
+      normalizeAngle(cam.object_rot.z());
+    } else {
+      // Right button pans in the xz plane
+      // Middle button pans in the xy plane
+      // Shift-right and Shift-middle zooms
+      if ((QApplication::keyboardModifiers() & Qt::ShiftModifier) != 0) {
+        cam.viewer_distance += (GLdouble)dy;
+      } else {
+
+      double mx = +(dx) * cam.viewer_distance/1000;
+      double mz = -(dy) * cam.viewer_distance/1000;
+
+      double my = 0;
+#if (QT_VERSION < QT_VERSION_CHECK(4, 7, 0))
+      if (event->buttons() & Qt::MidButton) {
+#else
+      if (event->buttons() & Qt::MiddleButton) {
+#endif
+        my = mz;
+        mz = 0;
+        // actually lock the x-position
+        // (turns out to be easier to use than xy panning)
+        mx = 0;
+      }
+
+      Matrix3d aax, aay, aaz, tm3;
+      aax = Eigen::AngleAxisd(-(cam.object_rot.x()/180) * M_PI, Vector3d::UnitX());
+      aay = Eigen::AngleAxisd(-(cam.object_rot.y()/180) * M_PI, Vector3d::UnitY());
+      aaz = Eigen::AngleAxisd(-(cam.object_rot.z()/180) * M_PI, Vector3d::UnitZ());
+      tm3 = Matrix3d::Identity();
+      tm3 = aaz * (aay * (aax * tm3));
+
+      Matrix4d tm;
+      tm = Matrix4d::Identity();
+      for (int i=0;i<3;i++) for (int j=0;j<3;j++) tm(j,i)=tm3(j,i);
+
+      Matrix4d vec;
+      vec <<
+        0,  0,  0,  mx,
+        0,  0,  0,  my,
+        0,  0,  0,  mz,
+        0,  0,  0,  1
+      ;
+      tm = tm * vec;
+      cam.object_trans.x() += tm(0,3);
+      cam.object_trans.y() += tm(1,3);
+      cam.object_trans.z() += tm(2,3);
+      }
+    }
+    updateGL();
+    emit doAnimateUpdate();
+  }
+  last_mouse = this_mouse;
+}
+
+void QGLView::mouseReleaseEvent(QMouseEvent*)
+{
+  mouse_drag_active = false;
+  releaseMouse();
+}
+
+bool QGLView::save(const char *filename)
+{
+  QImage img = grabFrameBuffer();
+  return img.save(filename, "PNG");
+}
+