Merge pull request #288 from openscad/issue11_2

Issue11 2

1 files changed, 0 insertions, 660 deletions

diff --git a/src/glview.cc b/src/glview.cc
deleted file mode 100644
index 859bf82..0000000
--- a/src/glview.cc
+++ /dev/null
@@ -1,660 +0,0 @@
-/*
- *  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 "GLView.h"
-#include "Preferences.h"
-#include "renderer.h"
-#include "rendersettings.h"
-#include "linalg.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
-
-#ifdef _WIN32
-#include <GL/wglew.h>
-#elif !defined(__APPLE__)
-#include <GL/glxew.h>
-#endif
-
-#define FAR_FAR_AWAY 100000.0
-
-GLView::GLView(QWidget *parent) : QGLWidget(parent), renderer(NULL)
-{
-	init();
-}
-
-GLView::GLView(const QGLFormat & format, QWidget *parent) : QGLWidget(format, parent)
-{
-	init();
-}
-
-static bool running_under_wine = false;
-
-void GLView::init()
-{
-	this->viewer_distance = 500;
-	this->object_rot_x = 35;
-	this->object_rot_y = 0;
-	this->object_rot_z = -25;
-	this->object_trans_x = 0;
-	this->object_trans_y = 0;
-	this->object_trans_z = 0;
-
-	this->mouse_drag_active = false;
-
-	this->showedges = false;
-	this->showfaces = true;
-	this->orthomode = false;
-	this->showaxes = false;
-	this->showcrosshairs = false;
-
-	for (int i = 0; i < 10; i++)
-		this->shaderinfo[i] = 0;
-
-	this->statusLabel = NULL;
-
-	setMouseTracking(true);
-#ifdef ENABLE_OPENCSG
-	this->is_opencsg_capable = false;
-	this->has_shaders = false;
-	this->opencsg_support = true;
-	static int sId = 0;
-	this->opencsg_id = sId++;
-#endif
-
-// 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 GLView::setRenderer(Renderer *r)
-{
-	this->renderer = r;
-	if (r) updateGL(); // Let the last image stay, e.g. to avoid animation flickering
-}
-
-void GLView::initializeGL()
-{
-	glEnable(GL_DEPTH_TEST);
-	glDepthRange(-FAR_FAR_AWAY, +FAR_FAR_AWAY);
-
-	glEnable(GL_BLEND);
-	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
-
-	GLfloat light_diffuse[] = {1.0, 1.0, 1.0, 1.0};
-	GLfloat light_position0[] = {-1.0, -1.0, +1.0, 0.0};
-	GLfloat light_position1[] = {+1.0, +1.0, -1.0, 0.0};
-
-	glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse);
-	glLightfv(GL_LIGHT0, GL_POSITION, light_position0);
-	glEnable(GL_LIGHT0);
-	glLightfv(GL_LIGHT1, GL_DIFFUSE, light_diffuse);
-	glLightfv(GL_LIGHT1, GL_POSITION, light_position1);
-	glEnable(GL_LIGHT1);
-	glEnable(GL_LIGHTING);
-	glEnable(GL_NORMALIZE);
-
-	glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
-	glEnable(GL_COLOR_MATERIAL);
-
-#ifdef ENABLE_OPENCSG
-	GLenum err = glewInit();
-	if (GLEW_OK != err) {
-		fprintf(stderr, "GLEW Error: %s\n", glewGetErrorString(err));
-	}
-
-	GLint rbits, gbits, bbits, abits, dbits, sbits;
-	glGetIntegerv(GL_RED_BITS, &rbits);
-	glGetIntegerv(GL_GREEN_BITS, &gbits);
-	glGetIntegerv(GL_BLUE_BITS, &bbits);
-	glGetIntegerv(GL_ALPHA_BITS, &abits);
-	glGetIntegerv(GL_DEPTH_BITS, &dbits);
-	glGetIntegerv(GL_STENCIL_BITS, &sbits);
-
-
-	this->rendererInfo.sprintf("GLEW version %s\n"
-														 "OpenGL version %s\n"
-														 "%s (%s)\n\n"
-														 "RGBA(%d%d%d%d), depth(%d), stencil(%d)\n"
-														 "Extensions:\n"
-														 "%s\n",
-														 glewGetString(GLEW_VERSION),
-														 glGetString(GL_VERSION),
-														 glGetString(GL_RENDERER),
-														 glGetString(GL_VENDOR),
-														 rbits, gbits, bbits, abits, dbits, sbits,
-														 glGetString(GL_EXTENSIONS));
-// FIXME: glGetString(GL_EXTENSIONS) is deprecated in OpenGL 3.0.
-// Use: glGetIntegerv(GL_NUM_EXTENSIONS, &NumberOfExtensions) and 
-// glGetStringi(GL_EXTENSIONS, i)
-
-	const char *openscad_disable_gl20_env = getenv("OPENSCAD_DISABLE_GL20");
-	if (openscad_disable_gl20_env && !strcmp(openscad_disable_gl20_env, "0")) {
-		openscad_disable_gl20_env = NULL;
-	}
-
-	// All OpenGL 2 contexts are OpenCSG capable
-	if (GLEW_VERSION_2_0) {
-		if (!openscad_disable_gl20_env) {
-			this->is_opencsg_capable = true;
-			this->has_shaders = true;
-		}
-	}
-	// If OpenGL < 2, check for extensions
-	else {
-		if (GLEW_ARB_framebuffer_object) this->is_opencsg_capable = true;
-		else if (GLEW_EXT_framebuffer_object && GLEW_EXT_packed_depth_stencil) {
-			this->is_opencsg_capable = true;
-		}
-#ifdef WIN32
-		else if (WGLEW_ARB_pbuffer && WGLEW_ARB_pixel_format) this->is_opencsg_capable = true;
-#elif !defined(__APPLE__)
-		else if (GLXEW_SGIX_pbuffer && GLXEW_SGIX_fbconfig) this->is_opencsg_capable = true;
-#endif
-	}
-
-	if (!GLEW_VERSION_2_0 || !this->is_opencsg_capable) {
-		if (Preferences::inst()->getValue("advanced/opencsg_show_warning").toBool()) {
-			QTimer::singleShot(0, this, SLOT(display_opencsg_warning()));
-		}
-	}
-	if (opencsg_support && this->has_shaders) {
-  /*
-		Uniforms:
-		  1 color1 - face color
-			2 color2 - edge color
-			7 xscale
-			8 yscale
-
-		Attributes:
-		  3 trig
-			4 pos_b
-			5 pos_c
-			6 mask
-
-		Other:
-		  9 width
-			10 height
-
-		Outputs:
-		  tp
-			tr
-			shading
-	 */
-		const char *vs_source =
-			"uniform float xscale, yscale;\n"
-			"attribute vec3 pos_b, pos_c;\n"
-			"attribute vec3 trig, mask;\n"
-			"varying vec3 tp, tr;\n"
-			"varying float shading;\n"
-			"void main() {\n"
-			"  vec4 p0 = gl_ModelViewProjectionMatrix * gl_Vertex;\n"
-			"  vec4 p1 = gl_ModelViewProjectionMatrix * vec4(pos_b, 1.0);\n"
-			"  vec4 p2 = gl_ModelViewProjectionMatrix * vec4(pos_c, 1.0);\n"
-			"  float a = distance(vec2(xscale*p1.x/p1.w, yscale*p1.y/p1.w), vec2(xscale*p2.x/p2.w, yscale*p2.y/p2.w));\n"
-			"  float b = distance(vec2(xscale*p0.x/p0.w, yscale*p0.y/p0.w), vec2(xscale*p1.x/p1.w, yscale*p1.y/p1.w));\n"
-			"  float c = distance(vec2(xscale*p0.x/p0.w, yscale*p0.y/p0.w), vec2(xscale*p2.x/p2.w, yscale*p2.y/p2.w));\n"
-			"  float s = (a + b + c) / 2.0;\n"
-			"  float A = sqrt(s*(s-a)*(s-b)*(s-c));\n"
-			"  float ha = 2.0*A/a;\n"
-			"  gl_Position = p0;\n"
-			"  tp = mask * ha;\n"
-			"  tr = trig;\n"
-			"  vec3 normal, lightDir;\n"
-			"  normal = normalize(gl_NormalMatrix * gl_Normal);\n"
-			"  lightDir = normalize(vec3(gl_LightSource[0].position));\n"
-			"  shading = abs(dot(normal, lightDir));\n"
-			"}\n";
-
-		/*
-			Inputs:
-			  tp && tr - if any components of tp < tr, use color2 (edge color)
-				shading  - multiplied by color1. color2 is is without lighting
-		 */
-		const char *fs_source =
-			"uniform vec4 color1, color2;\n"
-			"varying vec3 tp, tr, tmp;\n"
-			"varying float shading;\n"
-			"void main() {\n"
-			"  gl_FragColor = vec4(color1.r * shading, color1.g * shading, color1.b * shading, color1.a);\n"
-			"  if (tp.x < tr.x || tp.y < tr.y || tp.z < tr.z)\n"
-			"    gl_FragColor = color2;\n"
-			"}\n";
-
-		GLuint vs = glCreateShader(GL_VERTEX_SHADER);
-		glShaderSource(vs, 1, (const GLchar**)&vs_source, NULL);
-		glCompileShader(vs);
-
-		GLuint fs = glCreateShader(GL_FRAGMENT_SHADER);
-		glShaderSource(fs, 1, (const GLchar**)&fs_source, NULL);
-		glCompileShader(fs);
-
-		GLuint edgeshader_prog = glCreateProgram();
-		glAttachShader(edgeshader_prog, vs);
-		glAttachShader(edgeshader_prog, fs);
-		glLinkProgram(edgeshader_prog);
-
-		shaderinfo[0] = edgeshader_prog;
-		shaderinfo[1] = glGetUniformLocation(edgeshader_prog, "color1");
-		shaderinfo[2] = glGetUniformLocation(edgeshader_prog, "color2");
-		shaderinfo[3] = glGetAttribLocation(edgeshader_prog, "trig");
-		shaderinfo[4] = glGetAttribLocation(edgeshader_prog, "pos_b");
-		shaderinfo[5] = glGetAttribLocation(edgeshader_prog, "pos_c");
-		shaderinfo[6] = glGetAttribLocation(edgeshader_prog, "mask");
-		shaderinfo[7] = glGetUniformLocation(edgeshader_prog, "xscale");
-		shaderinfo[8] = glGetUniformLocation(edgeshader_prog, "yscale");
-
-		GLenum err = glGetError();
-		if (err != GL_NO_ERROR) {
-			fprintf(stderr, "OpenGL Error: %s\n", gluErrorString(err));
-		}
-
-		GLint status;
-		glGetProgramiv(edgeshader_prog, GL_LINK_STATUS, &status);
-		if (status == GL_FALSE) {
-			int loglen;
-			char logbuffer[1000];
-			glGetProgramInfoLog(edgeshader_prog, sizeof(logbuffer), &loglen, logbuffer);
-			fprintf(stderr, "OpenGL Program Linker Error:\n%.*s", loglen, logbuffer);
-		} else {
-			int loglen;
-			char logbuffer[1000];
-			glGetProgramInfoLog(edgeshader_prog, sizeof(logbuffer), &loglen, logbuffer);
-			if (loglen > 0) {
-				fprintf(stderr, "OpenGL Program Link OK:\n%.*s", loglen, logbuffer);
-			}
-			glValidateProgram(edgeshader_prog);
-			glGetProgramInfoLog(edgeshader_prog, sizeof(logbuffer), &loglen, logbuffer);
-			if (loglen > 0) {
-				fprintf(stderr, "OpenGL Program Validation results:\n%.*s", loglen, logbuffer);
-			}
-		}
-	}
-#endif /* ENABLE_OPENCSG */
-}
-
-#ifdef ENABLE_OPENCSG
-void GLView::display_opencsg_warning()
-{
-	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 GLView::resizeGL(int w, int h)
-{
-#ifdef ENABLE_OPENCSG
-	shaderinfo[9] = w;
-	shaderinfo[10] = h;
-#endif
-	glViewport(0, 0, w, h);
-	w_h_ratio = sqrt((double)w / (double)h);
-
-	setupPerspective();
-}
-
-void GLView::setupPerspective()
-{
-	glMatrixMode(GL_PROJECTION);
-	glLoadIdentity();
-	glFrustum(-w_h_ratio, +w_h_ratio, -(1/w_h_ratio), +(1/w_h_ratio), +10.0, +FAR_FAR_AWAY);
-	gluLookAt(0.0, -viewer_distance, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0);
-}
-
-void GLView::setupOrtho(double distance, bool offset)
-{
-	glMatrixMode(GL_PROJECTION);
-	glLoadIdentity();
-	if(offset)
-		glTranslated(-0.8, -0.8, 0);
-	double l = distance/10;
-	glOrtho(-w_h_ratio*l, +w_h_ratio*l,
-			-(1/w_h_ratio)*l, +(1/w_h_ratio)*l,
-			-FAR_FAR_AWAY, +FAR_FAR_AWAY);
-	gluLookAt(0.0, -viewer_distance, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0, 1.0);
-}
-
-void GLView::paintGL()
-{
-	glEnable(GL_LIGHTING);
-
-	if (orthomode) setupOrtho(viewer_distance);
-	else setupPerspective();
-
-	glMatrixMode(GL_MODELVIEW);
-	glLoadIdentity();
-
-	Color4f bgcol = RenderSettings::inst()->color(RenderSettings::BACKGROUND_COLOR);
-	glClearColor(bgcol[0], bgcol[1], bgcol[2], 0.0);
-
-	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
-
-	glRotated(object_rot_x, 1.0, 0.0, 0.0);
-	glRotated(object_rot_y, 0.0, 1.0, 0.0);
-	glRotated(object_rot_z, 0.0, 0.0, 1.0);
-
-  // FIXME: Crosshairs and axes are lighted, this doesn't make sense and causes them
-  // to change color based on view orientation.
-	if (showcrosshairs)
-	{
-		glLineWidth(3);
-		Color4f col = RenderSettings::inst()->color(RenderSettings::CROSSHAIR_COLOR);
-		glColor3f(col[0], col[1], col[2]);
-		glBegin(GL_LINES);
-		for (double xf = -1; xf <= +1; xf += 2)
-		for (double yf = -1; yf <= +1; yf += 2) {
-			double vd = viewer_distance/20;
-			glVertex3d(-xf*vd, -yf*vd, -vd);
-			glVertex3d(+xf*vd, +yf*vd, +vd);
-		}
-		glEnd();
-	}
-
-	glTranslated(object_trans_x, object_trans_y, object_trans_z);
-
-	// Large gray axis cross inline with the model
-  // FIXME: This is always gray - adjust color to keep contrast with background
-	if (showaxes)
-	{
-		glLineWidth(1);
-		glColor3d(0.5, 0.5, 0.5);
-		glBegin(GL_LINES);
-		double l = viewer_distance/10;
-		glVertex3d(-l, 0, 0);
-		glVertex3d(+l, 0, 0);
-		glVertex3d(0, -l, 0);
-		glVertex3d(0, +l, 0);
-		glVertex3d(0, 0, -l);
-		glVertex3d(0, 0, +l);
-		glEnd();
-	}
-
-	glDepthFunc(GL_LESS);
-	glCullFace(GL_BACK);
-	glDisable(GL_CULL_FACE);
-
-	glLineWidth(2);
-	glColor3d(1.0, 0.0, 0.0);
-
-	if (this->renderer) {
-#if defined(ENABLE_MDI) && defined(ENABLE_OPENCSG)
-		// FIXME: This belongs in the OpenCSG renderer, but it doesn't know about this ID yet
-		OpenCSG::setContext(this->opencsg_id);
-#endif
-		this->renderer->draw(showfaces, showedges);
-	}
-
-	// Small axis cross in the lower left corner
-	if (showaxes)
-	{
-		glDepthFunc(GL_ALWAYS);
-
-		setupOrtho(1000,true);
-
-		glMatrixMode(GL_MODELVIEW);
-		glLoadIdentity();
-		glRotated(object_rot_x, 1.0, 0.0, 0.0);
-		glRotated(object_rot_y, 0.0, 1.0, 0.0);
-		glRotated(object_rot_z, 0.0, 0.0, 1.0);
-
-		glLineWidth(1);
-		glBegin(GL_LINES);
-		glColor3d(1.0, 0.0, 0.0);
-		glVertex3d(0, 0, 0); glVertex3d(10, 0, 0);
-		glColor3d(0.0, 1.0, 0.0);
-		glVertex3d(0, 0, 0); glVertex3d(0, 10, 0);
-		glColor3d(0.0, 0.0, 1.0);
-		glVertex3d(0, 0, 0); glVertex3d(0, 0, 10);
-		glEnd();
-
-		GLdouble mat_model[16];
-		glGetDoublev(GL_MODELVIEW_MATRIX, mat_model);
-
-		GLdouble mat_proj[16];
-		glGetDoublev(GL_PROJECTION_MATRIX, mat_proj);
-
-		GLint viewport[4];
-		glGetIntegerv(GL_VIEWPORT, viewport);
-
-		GLdouble xlabel_x, xlabel_y, xlabel_z;
-		gluProject(12, 0, 0, mat_model, mat_proj, viewport, &xlabel_x, &xlabel_y, &xlabel_z);
-		xlabel_x = round(xlabel_x); xlabel_y = round(xlabel_y);
-
-		GLdouble ylabel_x, ylabel_y, ylabel_z;
-		gluProject(0, 12, 0, mat_model, mat_proj, viewport, &ylabel_x, &ylabel_y, &ylabel_z);
-		ylabel_x = round(ylabel_x); ylabel_y = round(ylabel_y);
-
-		GLdouble zlabel_x, zlabel_y, zlabel_z;
-		gluProject(0, 0, 12, mat_model, mat_proj, viewport, &zlabel_x, &zlabel_y, &zlabel_z);
-		zlabel_x = round(zlabel_x); zlabel_y = round(zlabel_y);
-
-		glMatrixMode(GL_PROJECTION);
-		glLoadIdentity();
-		glTranslated(-1, -1, 0);
-		glScaled(2.0/viewport[2], 2.0/viewport[3], 1);
-
-		glMatrixMode(GL_MODELVIEW);
-		glLoadIdentity();
-
-		// FIXME: This was an attempt to keep contrast with background, but is suboptimal
-		// (e.g. nearly invisible against a gray background).
-//		int r,g,b;
-//		r=g=b=0;
-//		bgcol.getRgb(&r, &g, &b);
-//		glColor3f((255.0f-r)/255.0f, (255.0f-g)/255.0f, (255.0f-b)/255.0f);
-		glColor3f(0.0f, 0.0f, 0.0f);
-		glBegin(GL_LINES);
-		// X Label
-		glVertex3d(xlabel_x-3, xlabel_y-3, 0); glVertex3d(xlabel_x+3, xlabel_y+3, 0);
-		glVertex3d(xlabel_x-3, xlabel_y+3, 0); glVertex3d(xlabel_x+3, xlabel_y-3, 0);
-		// Y Label
-		glVertex3d(ylabel_x-3, ylabel_y-3, 0); glVertex3d(ylabel_x+3, ylabel_y+3, 0);
-		glVertex3d(ylabel_x-3, ylabel_y+3, 0); glVertex3d(ylabel_x, ylabel_y, 0);
-		// Z Label
-		glVertex3d(zlabel_x-3, zlabel_y-3, 0); glVertex3d(zlabel_x+3, zlabel_y-3, 0);
-		glVertex3d(zlabel_x-3, zlabel_y+3, 0); glVertex3d(zlabel_x+3, zlabel_y+3, 0);
-		glVertex3d(zlabel_x-3, zlabel_y-3, 0); glVertex3d(zlabel_x+3, zlabel_y+3, 0);
-		glEnd();
-
-		//Restore perspective for next paint
-		if(!orthomode)
-			setupPerspective();
-	}
-
-	if (statusLabel) {
-		QString msg;
-		msg.sprintf("Viewport: translate = [ %.2f %.2f %.2f ], rotate = [ %.2f %.2f %.2f ], distance = %.2f",
-			-object_trans_x, -object_trans_y, -object_trans_z,
-			fmodf(360 - object_rot_x + 90, 360), fmodf(360 - object_rot_y, 360), fmodf(360 - object_rot_z, 360), viewer_distance);
-		statusLabel->setText(msg);
-	}
-
-	if (running_under_wine) swapBuffers();
-}
-
-void GLView::keyPressEvent(QKeyEvent *event)
-{
-	if (event->key() == Qt::Key_Plus) {
-		viewer_distance *= 0.9;
-		updateGL();
-		return;
-	}
-	if (event->key() == Qt::Key_Minus) {
-		viewer_distance /= 0.9;
-		updateGL();
-		return;
-	}
-}
-
-void GLView::wheelEvent(QWheelEvent *event)
-{
-	viewer_distance *= pow(0.9, event->delta() / 120.0);
-	updateGL();
-}
-
-void GLView::mousePressEvent(QMouseEvent *event)
-{
-	mouse_drag_active = true;
-	last_mouse = event->globalPos();
-}
-
-void GLView::normalizeAngle(GLdouble& angle)
-{
-	while(angle < 0)
-		angle += 360;
-	while(angle > 360)
-		angle -= 360;
-}
-
-void GLView::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
-			object_rot_x += dy;
-			if ((QApplication::keyboardModifiers() & Qt::ShiftModifier) != 0)
-				object_rot_y += dx;
-			else
-				object_rot_z += dx;
-
-			normalizeAngle(object_rot_x);
-			normalizeAngle(object_rot_y);
-			normalizeAngle(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) {
-				viewer_distance += (GLdouble)dy;
-			} else {
-
-      double mx = +(dx) * viewer_distance/1000;
-      double mz = -(dy) * 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(-(object_rot_x/180) * M_PI, Vector3d::UnitX());
-			aay = Eigen::AngleAxisd(-(object_rot_y/180) * M_PI, Vector3d::UnitY());
-			aaz = Eigen::AngleAxisd(-(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;
-      object_trans_x += tm(0,3);
-      object_trans_y += tm(1,3);
-      object_trans_z += tm(2,3);
-			}
-		}
-		updateGL();
-		emit doAnimateUpdate();
-	}
-	last_mouse = this_mouse;
-}
-
-void GLView::mouseReleaseEvent(QMouseEvent*)
-{
-	mouse_drag_active = false;
-	releaseMouse();
-}