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openglscene.cpp
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openglscene.cpp
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/* This proram is part of Qt examples.
Copyright 2015-2022 by Chun-Ming Su
E-Mail: sokunmin@gmail.com
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 3 of the License, or
(at your option) any later version.
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, see <http://www.gnu.org/licenses/>. */
#define GL_GLEXT_PROTOTYPES
#include <GL/glew.h>
//#include <GL/freeglut.h>
#include "openglscene.h"
#include "model.h"
#include "trackball.h"
#include <QtGui>
#include <QtOpenGL>
#include <QtWidgets>
#include <QtCore>
#include <QtConcurrent/QtConcurrent>
#ifndef GL_MULTISAMPLE
#define GL_MULTISAMPLE 0x809D
#endif
//#define TEST_2
#define VectorOutput(m, v) qDebug() << QString(QString(m) + "x(%1), y(%2), z(%3)").arg(v.x()).arg(v.y()).arg(v.z());
const float AXIS_SIZE = 15.f;
const float GRID_STEP = 10.f;
const float GRID_SIZE = 100.f;
const float CAMERA_DISTANCE = 16.0f;
const float DEG2RAD = 3.141593f / 180;
static Model *loadModel(const QString &filePath)
{
return new Model(filePath);
}
//========================================================
OpenGLScene::OpenGLScene()
: m_wireframeEnabled(false)
, m_normalsEnabled(false)
, m_gcodeMotionEnabled(true)
, m_modelColor(153, 255, 0)
, m_backgroundColor(233,240,250)
, m_model(0)
// , m_distance(1.4f)
{
#ifdef QUATERNION_CAMERA
m_distExp = 6000.f;
m_trackBall = new TrackBall(0.0f, QVector3D(0,1,0));
#else
m_cameraAngleX = m_cameraAngleY = 0;
m_cameraDistance = CAMERA_DISTANCE;
#endif
// ================ Controls dialog ================
QWidget *controls = createDialog(tr("Controls"));
m_modelButton = new QPushButton(tr("Load model"));
connect(m_modelButton, SIGNAL(clicked()), this, SLOT(loadModel()));
#ifndef QT_NO_CONCURRENT
connect(&m_modelLoader, SIGNAL(finished()), this, SLOT(modelLoaded()));
#endif
controls->layout()->addWidget(m_modelButton);
QCheckBox *wireframe = new QCheckBox(tr("Render as wireframe"));
connect(wireframe, SIGNAL(toggled(bool)), this, SLOT(enableWireframe(bool)));
controls->layout()->addWidget(wireframe);
QCheckBox *normals = new QCheckBox(tr("Display normals vectors"));
connect(normals, SIGNAL(toggled(bool)), this, SLOT(enableNormals(bool)));
controls->layout()->addWidget(normals);
QCheckBox *gcodeMotion = new QCheckBox(tr("Display GCode Motion"));
gcodeMotion->setChecked(true);
connect(gcodeMotion, SIGNAL(toggled(bool)), this, SLOT(enableGCodeMotion(bool)));
controls->layout()->addWidget(gcodeMotion);
QCheckBox *linesOnly = new QCheckBox(tr("Display G-code paths"));
linesOnly->setChecked(true);
connect(linesOnly, SIGNAL(toggled(bool)), this, SLOT(enableGCodeLines(bool)));
controls->layout()->addWidget(linesOnly);
QPushButton *colorButton = new QPushButton(tr("Choose model color"));
connect(colorButton, SIGNAL(clicked()), this, SLOT(setModelColor()));
controls->layout()->addWidget(colorButton);
QPushButton *backgroundButton = new QPushButton(tr("Choose background color"));
connect(backgroundButton, SIGNAL(clicked()), this, SLOT(setBackgroundColor()));
controls->layout()->addWidget(backgroundButton);
// ================= Model info Dialog ===================
QWidget *statistics = createDialog(tr("Model info"));
statistics->layout()->setMargin(20);
for (int i = 0; i < 4; ++i) {
m_labels[i] = new QLabel;
statistics->layout()->addWidget(m_labels[i]);
}
QGroupBox *posGroupBox = new QGroupBox(tr("Translate"));
QVBoxLayout *posVBox = new QVBoxLayout();
QHBoxLayout *posXBox = createSpinBox(tr(" X "), -300, 300, SLOT(translateX(int)));
QHBoxLayout *posYBox = createSpinBox(tr(" Y "), -300, 300, SLOT(translateY(int)));
QHBoxLayout *posZBox = createSpinBox(tr(" Z "), -300, 300, SLOT(translateZ(int)));
posVBox->addLayout(posXBox);
posVBox->addLayout(posYBox);
posVBox->addLayout(posZBox);
posGroupBox->setLayout(posVBox);
QGroupBox *rotGroupBox = new QGroupBox(tr("Rotate"));
QVBoxLayout *rotVBox = new QVBoxLayout();
QHBoxLayout *pitchBox = createSpinBox(tr(" Pitch "), -359, 359, SLOT(rotateX(int)));
QHBoxLayout *yawBox = createSpinBox(tr(" Yaw ") , -359, 359, SLOT(rotateY(int)));
QHBoxLayout *rollBox = createSpinBox(tr(" Roll ") , -359, 359, SLOT(rotateZ(int)));
rotVBox->addLayout(pitchBox);
rotVBox->addLayout(yawBox);
rotVBox->addLayout(rollBox);
rotGroupBox->setLayout(rotVBox);
QGroupBox *scaleGroupBox = new QGroupBox(tr("Scale"));
QVBoxLayout *scaleVBox = new QVBoxLayout();
QHBoxLayout *scaleBox = createDoubleSpinBox(tr(" Ratio "), 0.0, 5.0, 0.01, SLOT(scale(double)));
scaleVBox->addLayout(scaleBox);
scaleGroupBox->setLayout(scaleVBox);
statistics->layout()->addWidget(posGroupBox);
statistics->layout()->addWidget(rotGroupBox);
statistics->layout()->addWidget(scaleGroupBox);
// ================= Scrollbar Dialog ===================
QWidget *gcodeSlider = createDialog(tr("G-Code Slider"));
m_slider = createSlider(0, SLOT(gcodeLayers(int)));
gcodeSlider->layout()->addWidget(m_slider);
// ================= Merge dialogs ==================
QWidget *widgets[] = { controls, statistics, gcodeSlider };
for (uint i = 0; i < sizeof(widgets) / sizeof(*widgets); ++i) {
QGraphicsProxyWidget *proxy = new QGraphicsProxyWidget(0, Qt::Dialog);
proxy->setWidget(widgets[i]);
addItem(proxy);
}
QPointF pos(10, 10);
qDebug() << "QGraphicsItem size() => " << items().size();
foreach (QGraphicsItem *item, items()) {
item->setFlag(QGraphicsItem::ItemIsMovable);
item->setCacheMode(QGraphicsItem::DeviceCoordinateCache);
const QRectF rect = item->boundingRect();
item->setPos(pos.x() - rect.x(), pos.y() - rect.y());
pos += QPointF(0, 10 + rect.height());
}
QRadialGradient gradient(40, 40, 40, 40, 40);
gradient.setColorAt(0.2, Qt::yellow);
gradient.setColorAt(1, Qt::transparent);
m_lightItem = new QGraphicsRectItem(0, 0, 80, 80);
m_lightItem->setPen(Qt::NoPen);
m_lightItem->setBrush(gradient);
m_lightItem->setFlag(QGraphicsItem::ItemIsMovable);
m_lightItem->setPos(800, 200);
addItem(m_lightItem);
// initGL();
loadModel(QLatin1String("cube.obj"));
#ifdef TEST_2
generateTube(QVector3D(49.763, 20.3, 48.044), QVector3D(49.913, 20.3, 48.044), QVector3D(50.075, 20.3, 48.044), 3, true);
m_tubeIndices.resize(m_tubeVertices.size());
for (int i=0; i<m_tubeVertices.size(); i++) {
m_tubeIndices[i] = i;
qDebug() << QString("tube vertice => x(%1), y(%2), z(%3)")
.arg(m_tubeVertices.at(i).x())
.arg(m_tubeVertices.at(i).y())
.arg(m_tubeVertices.at(i).z());
}
//calculate normals of each face
int size = m_tubeVertices.size();
m_tubeNormals.resize(size);
for (int i = 0; i < m_tubeIndices.size(); i += 3) {
const QVector3D a = m_tubeVertices.at(m_tubeIndices.at(i));
const QVector3D b = m_tubeVertices.at(m_tubeIndices.at(i+1));
const QVector3D c = m_tubeVertices.at(m_tubeIndices.at(i+2));
const QVector3D normal = QVector3D::crossProduct(b - a, c - a).normalized();
for (int j = 0; j < 3; ++j)
m_tubeNormals[m_tubeIndices.at(i + j)] += normal;
}
#endif
/*
for (int i=0; i<m_tubeNormals.size(); i++) {
qDebug() << QString("m_tubeNormals => x(%1), y(%2), z(%3)").arg(m_tubeNormals.at(i).x()).arg(m_tubeNormals.at(i).y()).arg(m_tubeNormals.at(i).z());
}
qDebug() << "===> end of creation";
// Generate 2 VBOs
glGenBuffersARB(1, &vboId);
// Transfer vertex data to VBO 0
glBindBufferARB(GL_ARRAY_BUFFER_ARB, vboId);
glBufferDataARB(GL_ARRAY_BUFFER_ARB, sizeof(m_tubeVertices.data()) + sizeof(m_tubeNormals.data()), 0, GL_STATIC_DRAW_ARB);
*/
}
OpenGLScene::~OpenGLScene()
{
// glDeleteBuffersARB(1, &vboId);
}
QDialog *OpenGLScene::createDialog(const QString &windowTitle) const
{
QDialog *dialog = new QDialog(0, Qt::CustomizeWindowHint | Qt::WindowTitleHint);
dialog->setWindowOpacity(0.8);
dialog->setWindowTitle(windowTitle);
dialog->setLayout(new QVBoxLayout);
return dialog;
}
QSlider *OpenGLScene::createSlider(int rangeMax, const char *setterSlot)
{
QSlider *slider = new QSlider(Qt::Horizontal);
slider->setRange(0, rangeMax);
slider->setSingleStep(1);
slider->setPageStep(1);
slider->setTickInterval(1);
slider->setTickPosition(QSlider::TicksRight);
connect(slider, SIGNAL(valueChanged(int)), this, setterSlot);
return slider;
}
QHBoxLayout * OpenGLScene::createSpinBox(QString label,int rangeFrom, int rangeTo, const char *member)
{
QLabel * spinLabel = new QLabel(label);
QSpinBox *spinBox = new QSpinBox();
spinBox->setRange(rangeFrom, rangeTo);
connect(spinBox, SIGNAL(valueChanged(int)), this, member);
QHBoxLayout * layout = new QHBoxLayout;
layout->addWidget(spinLabel);
layout->addWidget(spinBox);
return layout;
}
QHBoxLayout * OpenGLScene::createDoubleSpinBox(QString label, double rangeFrom, double rangeTo, double singleStep, const char *member)
{
QLabel * spinLabel = new QLabel(label);
QDoubleSpinBox *spinBox = new QDoubleSpinBox();
spinBox->setRange(rangeFrom, rangeTo);
spinBox->setSingleStep(singleStep);
spinBox->setValue(1.0f);
connect(spinBox, SIGNAL(valueChanged(double)), this, member);
QHBoxLayout * layout = new QHBoxLayout;
layout->addWidget(spinLabel);
layout->addWidget(spinBox);
return layout;
}
void OpenGLScene::initGL()
{
glShadeModel(GL_SMOOTH);
glPixelStorei(GL_UNPACK_ALIGNMENT, 4); // 4-byte pixel alignment
// enable /disable features
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST);
glHint(GL_POLYGON_SMOOTH_HINT, GL_NICEST);
// enable /disable features
glEnable(GL_DEPTH_TEST);
// glEnable(GL_CULL_FACE);
glEnable(GL_BLEND);
glEnable(GL_LIGHTING);
glEnable(GL_NORMALIZE);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_LINE_SMOOTH);
glEnable(GL_LEQUAL);
// track material ambient and diffuse from surface color, call it before glEnable(GL_COLOR_MATERIAL)
glColorMaterial(GL_FRONT_AND_BACK, GL_AMBIENT_AND_DIFFUSE);
glEnable(GL_COLOR_MATERIAL);
}
void OpenGLScene::initLights()
{
}
// calc perpendicular = http://math.stackexchange.com/questions/995659/given-two-points-find-another-point-a-perpendicular-distance-away-from-the-midp
//http://stackoverflow.com/questions/7586063/how-to-calculate-the-angle-between-a-line-and-the-horizontal-axis
/** d2(=<p2, p3>)
s2┌-----------k1
p3├---------/p2|
s1└--------/ | |
k2| | | d1(=<p1, p2>)
/ | | |
/ └-┴-┘
d3 / f2 p1 f1
*/
void OpenGLScene::generateTube(QVector3D p1, QVector3D p2, QVector3D p3, float radius, bool saveRearVector)
{
// calculcate half-angle vector.
QVector3D d1Vector = p1 - p2;
QVector3D d2Vector = p3 - p2;
//calculate perpendicular vector for p1.
float ratio = radius / sqrt( pow(p1.z() - p2.z(), 2) + pow(p2.x() - p1.x(), 2));
QVector3D p1p2VertVector = QVector3D((p1.z() - p2.z()) * ratio, p1.y(), (p2.x() - p1.x()) * ratio);
float cosAngle = QVector3D::dotProduct(d1Vector, d2Vector) /
((sqrt(pow(d1Vector.x(), 2) + pow(d1Vector.z(), 2))) *
(sqrt(pow(d2Vector.x(), 2) + pow(d2Vector.z(), 2))));
float sinHalfAngle = sqrt((1 - cosAngle) / 2);
float d3Radius = radius / sinHalfAngle;
float d1Length = (sqrt(pow(d1Vector.x(), 2) + pow(d1Vector.z(), 2)));
float d2Length = (sqrt(pow(d2Vector.x(), 2) + pow(d2Vector.z(), 2)));
if (d1Length)
d1Vector /= d1Length;
if (d2Length)
d2Vector /= d2Length;
QVector3D d3Vector = QVector3D((d1Vector.x() + d2Vector.x())/2, d1Vector.y(), (d1Vector.z() + d2Vector.z()) /2 );
float d3Length = (sqrt(pow(d3Vector.x(), 2) + pow(d3Vector.z(), 2)));
if (d3Length)
d3Vector /= d3Length;
float kValueDirection = d1Vector.x() * d2Vector.z() - d2Vector.x() * d1Vector.z();
QVector3D k1, k2;
if (kValueDirection > 0) {
k1 = QVector3D(p2.x() - d3Radius * d3Vector.x(), p2.y(), p2.z() - d3Radius * d3Vector.z());
k2 = QVector3D(p2.x() + d3Radius * d3Vector.x(), p2.y(), p2.z() + d3Radius * d3Vector.z());
} else if (kValueDirection < 0) {
k1 = QVector3D(p2.x() + d3Radius * d3Vector.x(), p2.y(), p2.z() + d3Radius * d3Vector.z());
k2 = QVector3D(p2.x() - d3Radius * d3Vector.x(), p2.y(), p2.z() - d3Radius * d3Vector.z());
} else {
//This could be parallel.
k1 = QVector3D(p2.x() + p1p2VertVector.x(), p2.y(), p2.z() + p1p2VertVector.z());
k2 = QVector3D(p2.x() - p1p2VertVector.x(), p2.y(), p2.z() - p1p2VertVector.z());
}
qDebug() << "========================================";
qDebug() << QString("cosAngle => %1").arg(cosAngle);
qDebug() << QString("sinHalfAngle => %1").arg(sinHalfAngle);
qDebug() << QString("d3Radius => %1").arg(d3Radius);
qDebug() << QString("d1UnitVector => %1").arg(d1Length);
qDebug() << QString("d2UnitVector => %1").arg(d2Length);
qDebug() << QString("d1Vector => x(%1), y(%2), z(%3)").arg(d1Vector.x()).arg(d1Vector.y()).arg(d1Vector.z());
qDebug() << QString("d2Vector => x(%1), y(%2), z(%3)").arg(d2Vector.x()).arg(d2Vector.y()).arg(d2Vector.z());
qDebug() << QString("d3Vector => x(%1), y(%2), z(%3)").arg(d3Vector.x()).arg(d3Vector.y()).arg(d3Vector.z());
qDebug() << QString("k1 => x(%1), y(%2), z(%3)").arg(k1.x()).arg(k1.y()).arg(k1.z());
qDebug() << QString("k2 => x(%1), y(%2), z(%3)").arg(k2.x()).arg(k2.y()).arg(k2.z());
qDebug() << "========================================";
QVector3D f1 = QVector3D(p1.x() + p1p2VertVector.x(), p1.y(), p1.z() + p1p2VertVector.z());
QVector3D f2 = QVector3D(p1.x() - p1p2VertVector.x(), p1.y(), p1.z() - p1p2VertVector.z());
QVector3D p1Vert1 = QVector3D(p1.x(), p1.y() + radius, p1.z());
QVector3D p1Vert2 = QVector3D(p1.x(), p1.y() - radius, p1.z());
QVector3D p2Vert1 = QVector3D(p2.x(), p2.y() + radius, p2.z());
QVector3D p2Vert2 = QVector3D(p2.x(), p2.y() - radius, p2.z());
//Save rhombus facet of p1
m_tubeVertices.push_back(f1);
m_tubeVertices.push_back(p1Vert1);
m_tubeVertices.push_back(f2);
m_tubeVertices.push_back(f1);
m_tubeVertices.push_back(f2);
m_tubeVertices.push_back(p1Vert2);
//Save triangles of the tube.
m_tubeVertices.push_back(f1);
m_tubeVertices.push_back(k1);
m_tubeVertices.push_back(p2Vert1);
m_tubeVertices.push_back(f1);
m_tubeVertices.push_back(p2Vert1);
m_tubeVertices.push_back(p1Vert1);
m_tubeVertices.push_back(f2);
m_tubeVertices.push_back(k2);
m_tubeVertices.push_back(p1Vert1);
m_tubeVertices.push_back(k2);
m_tubeVertices.push_back(p2Vert1);
m_tubeVertices.push_back(p1Vert1);
m_tubeVertices.push_back(f1);
m_tubeVertices.push_back(p2Vert2);
m_tubeVertices.push_back(k1);
m_tubeVertices.push_back(f1);
m_tubeVertices.push_back(p1Vert2);
m_tubeVertices.push_back(p2Vert2);
m_tubeVertices.push_back(f2);
m_tubeVertices.push_back(k2);
m_tubeVertices.push_back(p2Vert2);
m_tubeVertices.push_back(f2);
m_tubeVertices.push_back(p2Vert2);
m_tubeVertices.push_back(p1Vert2);
//Save previous rhombus facet, including k1, k2, p2Vertical1, p2Vertical2
m_prevFacet.push_back(k1);
m_prevFacet.push_back(p2Vert1);
m_prevFacet.push_back(k2);
m_prevFacet.push_back(k1);
m_prevFacet.push_back(k2);
m_prevFacet.push_back(p2Vert2);
if (saveRearVector) {
float ratio2 = radius / sqrt( pow(p2.z() - p3.z(), 2) + pow(p3.x() - p2.x(), 2));
QVector3D p2p3VertVector = QVector3D((p2.z() - p3.z()) * ratio2, p2.y(), (p3.x() - p2.x()) * ratio2);
QVector3D s1 = QVector3D(p3.x() + p2p3VertVector.x(), p3.y(), p3.z() + p2p3VertVector.z());
QVector3D s2 = QVector3D(p3.x() - p2p3VertVector.x(), p3.y(), p3.z() - p2p3VertVector.z());
QVector3D p3Vert1 = QVector3D(p3.x(), p3.y() + radius, p3.z());
QVector3D p3Vert2 = QVector3D(p3.x(), p3.y() - radius, p3.z());
//save triangles of tube.
m_tubeVertices.push_back(s2);
m_tubeVertices.push_back(k2);
m_tubeVertices.push_back(p2Vert1);
m_tubeVertices.push_back(s2);
m_tubeVertices.push_back(p2Vert1);
m_tubeVertices.push_back(p3Vert1);
m_tubeVertices.push_back(s2);
m_tubeVertices.push_back(p3Vert2);
m_tubeVertices.push_back(k2);
m_tubeVertices.push_back(k2);
m_tubeVertices.push_back(p3Vert2);
m_tubeVertices.push_back(p2Vert2);
m_tubeVertices.push_back(s1);
m_tubeVertices.push_back(p2Vert1);
m_tubeVertices.push_back(p3Vert1);
m_tubeVertices.push_back(s1);
m_tubeVertices.push_back(k1);
m_tubeVertices.push_back(p2Vert1);
m_tubeVertices.push_back(s1);
m_tubeVertices.push_back(p2Vert2);
m_tubeVertices.push_back(k1);
m_tubeVertices.push_back(s1);
m_tubeVertices.push_back(p3Vert2);
m_tubeVertices.push_back(p2Vert2);
//Save rhombus facet of p1
m_tubeVertices.push_back(s1);
m_tubeVertices.push_back(p3Vert1);
m_tubeVertices.push_back(s2);
m_tubeVertices.push_back(s1);
m_tubeVertices.push_back(s2);
m_tubeVertices.push_back(p3Vert2);
}
}
void OpenGLScene::drawTube()
{
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_LIGHT0);
glEnable(GL_LIGHTING);
glPushMatrix();
#ifdef TEST_1
QVector3D a = QVector3D( 5, 1, 5);
QVector3D b = QVector3D( 5, 1, -5);
QVector3D c = QVector3D( -5, 1, 5);
// draw axis
glLineWidth(1);
glBegin(GL_LINES);
// right line
glColor3f(0, 1, 0);
glVertex3f(a.x(), a.y(), a.z());
glVertex3f(b.x(), b.y(), b.z());
// rear line
glVertex3f(b.x(), b.y(), b.z());
glVertex3f(c.x(), c.y(), c.z());
glEnd();
//================================
float radius = 2;
QVector3D d1Vector = a - b;
QVector3D d2Vector = c - b;
float cosAngle = QVector3D::dotProduct(d1Vector, d2Vector) /
((sqrt(pow(d1Vector.x(), 2) + pow(d1Vector.z(), 2))) *
(sqrt(pow(d2Vector.x(), 2) + pow(d2Vector.z(), 2))));
float sinHalfAngle = sqrt((1 - cosAngle) / 2);
float d3Radius = radius / sinHalfAngle;
float d1UnitVector = (sqrt(pow(d1Vector.x(), 2) + pow(d1Vector.z(), 2)));
float d2UnitVector = (sqrt(pow(d2Vector.x(), 2) + pow(d2Vector.z(), 2)));
qDebug() << "========================================";
qDebug() << QString("cosAngle => %1").arg(cosAngle);
qDebug() << QString("sinHalfAngle => %1").arg(sinHalfAngle);
qDebug() << QString("d3Radius => %1").arg(d3Radius);
qDebug() << QString("d1UnitVector => %1").arg(d1UnitVector);
qDebug() << QString("d2UnitVector => %1").arg(d2UnitVector);
d1Vector /= d1UnitVector;
d2Vector /= d2UnitVector;
QVector3D d3Vector = QVector3D((d1Vector.x() + d2Vector.x())/2, d1Vector.y(), (d1Vector.z() + d2Vector.z()) /2 );
float d3UnitVector = (sqrt(pow(d3Vector.x(), 2) + pow(d3Vector.z(), 2)));
d3Vector /= d3UnitVector;
qDebug() << QString("d1Vector => x(%1), y(%2), z(%3)").arg(d1Vector.x()).arg(d1Vector.y()).arg(d1Vector.z());
qDebug() << QString("d2Vector => x(%1), y(%2), z(%3)").arg(d2Vector.x()).arg(d2Vector.y()).arg(d2Vector.z());
qDebug() << QString("d3Vector => x(%1), y(%2), z(%3)").arg(d3Vector.x()).arg(d3Vector.y()).arg(d3Vector.z());
QVector3D k1 = QVector3D(b.x() - d3Radius*d3Vector.x(), b.y(), b.z() - d3Radius * d3Vector.z());
QVector3D k2 = QVector3D(b.x() + d3Radius*d3Vector.x(), b.y(), b.z() + d3Radius * d3Vector.z());
qDebug() << QString("k1 => x(%1), y(%2), z(%3)").arg(k1.x()).arg(k1.y()).arg(k1.z());
qDebug() << QString("k2 => x(%1), y(%2), z(%3)").arg(k2.x()).arg(k2.y()).arg(k2.z());
qDebug() << "========================================";
// draw axis
glLineWidth(3);
glBegin(GL_LINES);
// right line
glColor3f(0, 0, 1);
glVertex3f(b.x(), b.y(), b.z());
glVertex3f(k1.x(), k1.y(), k1.z());
// rear line
glVertex3f(b.x(), b.y(), b.z());
glVertex3f(k2.x(), k2.y(), k2.z());
glEnd();
float ratio = radius / sqrt( pow(a.z() - b.z(), 2) + pow(b.x() - a.x(), 2));
QVector3D verticalVec = QVector3D((a.z() - b.z()) * ratio, a.y(), (b.x() - a.x()) * ratio);
QVector3D p1New1 = QVector3D(a.x() + verticalVec.x(), a.y(), a.z() + verticalVec.z());
QVector3D p1New2 = QVector3D(a.x() - verticalVec.x(), a.y(), a.z() - verticalVec.z());
glLineWidth(3);
glBegin(GL_LINES);
glColor3f(0, 0, 1);
glVertex3f(p1New1.x(), p1New1.y(), p1New1.z());
glVertex3f(p1New2.x(), p1New2.y(), p1New2.z());
glVertex3f(p1New1.x(), p1New1.y(), p1New1.z());
glVertex3f(k1.x(), k1.y(), k1.z());
glVertex3f(p1New2.x(), p1New2.y(), p1New2.z());
glVertex3f(k2.x(), k2.y(), k2.z());
glEnd();
#endif
// [1] vertices only
#ifdef TEST_2
// glBindBufferARB(GL_ARRAY_BUFFER_ARB, vboId);
// enable vertex arrays
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_NORMAL_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, (float *)m_tubeVertices.data());
glNormalPointer(GL_FLOAT, 0, (float *)m_tubeNormals.data());
glDrawElements(GL_TRIANGLES, m_tubeIndices.size(), GL_UNSIGNED_INT, m_tubeIndices.data());
glDisableClientState(GL_NORMAL_ARRAY);
glDisableClientState(GL_VERTEX_ARRAY);
#endif
glPopMatrix();
glDisable(GL_COLOR_MATERIAL);
glDisable(GL_LIGHT0);
glDisable(GL_LIGHTING);
}
void OpenGLScene::drawBackground(QPainter *painter, const QRectF &)
{
if (painter->paintEngine()->type() != QPaintEngine::OpenGL
&& painter->paintEngine()->type() != QPaintEngine::OpenGL2)
{
qWarning("OpenGLScene: drawBackground needs a QGLWidget to be set as viewport on the graphics view");
return;
}
painter->beginNativePainting();
initGL();
glClearColor(m_backgroundColor.redF(), m_backgroundColor.greenF(), m_backgroundColor.blueF(), 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT);
glMatrixMode(GL_PROJECTION); //switch to projection matrix
glPushMatrix(); //save current projection matrix
glLoadIdentity(); //reset projection matrix
gluPerspective(70, width() / height(), 0.01, 1000);
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glLoadIdentity();
// ====== added begin ======
#ifdef QUATERNION_CAMERA
QMatrix4x4 view;
view.rotate(m_trackBall->rotation());
view(2, 3) -= 2.0f * exp(m_distExp / 1200.0f);
glLoadMatrixf(view.constData());
#else
/*
//move model farther away.
glTranslatef(0, 0, -m_distance);
//rotate model
glRotatef(m_rotation.x, 1, 0, 0);
glRotatef(m_rotation.y, 0, 1, 0);
glRotatef(m_rotation.z, 0, 0, 1);*/
#endif
if (m_model) {
const float pos[] = { float(m_lightItem->x() - width() / 2), float(height() / 2 - m_lightItem->y()), 512, 0 };
glLightfv(GL_LIGHT0, GL_POSITION, pos);
glColor4f(m_modelColor.redF(), m_modelColor.greenF(), m_modelColor.blueF(), 1.0f);
glEnable(GL_MULTISAMPLE);
m_model->render(m_wireframeEnabled, m_normalsEnabled, m_gcodeMotionEnabled, m_gcodeLinesEnabled);
glDisable(GL_MULTISAMPLE);
}
drawTube();
drawGrid();
drawBox();
// drawAxis();
// ========== added (end) ===========
glPopMatrix();
glMatrixMode(GL_PROJECTION);
glPopMatrix();
painter->endNativePainting();
QTimer::singleShot(20, this, SLOT(update()));
}
void OpenGLScene::drawBox()
{
// glDepthFunc(GL_ALWAYS); // to avoid visual artifacts with grid lines
glDisable(GL_LIGHTING);
// glPushMatrix();
glLineWidth(1);
glBegin(GL_LINE_LOOP);
glColor3f(0.f, 0.f, 0.f);
// Top plane
glVertex3f( GRID_SIZE, GRID_SIZE, GRID_SIZE);
glVertex3f(-GRID_SIZE, GRID_SIZE, GRID_SIZE);
glVertex3f(-GRID_SIZE, GRID_SIZE, -GRID_SIZE);
glVertex3f( GRID_SIZE, GRID_SIZE, -GRID_SIZE);
glEnd();
glLineWidth(1);
glBegin(GL_LINES);
glColor3f(0.f, 0.f, 0.f);
// Top plane
glVertex3f( GRID_SIZE, GRID_SIZE, GRID_SIZE);
glVertex3f( GRID_SIZE, 0.f, GRID_SIZE);
glVertex3f(-GRID_SIZE, GRID_SIZE, GRID_SIZE);
glVertex3f(-GRID_SIZE, 0.f, GRID_SIZE);
glVertex3f(-GRID_SIZE, GRID_SIZE, -GRID_SIZE);
glVertex3f(-GRID_SIZE, 0.f, -GRID_SIZE);
glVertex3f( GRID_SIZE, GRID_SIZE, -GRID_SIZE);
glVertex3f( GRID_SIZE, 0.f, -GRID_SIZE);
glEnd();
// glPopMatrix();
// restore default settings
glEnable(GL_LIGHTING);
// glDepthFunc(GL_LEQUAL);
}
void OpenGLScene::drawAxis()
{
// glDepthFunc(GL_ALWAYS); // to avoid visual artifacts with grid lines
glDisable(GL_LIGHTING);
glPushMatrix();
// draw axis
glLineWidth(3);
glBegin(GL_LINES);
// x
glColor3f(1, 0, 0);
glVertex3f(0, 0, 0);
glVertex3f(AXIS_SIZE, 0, 0);
// y
glColor3f(0, 1, 0);
glVertex3f(0, 0, 0);
glVertex3f(0, AXIS_SIZE, 0);
// z
glColor3f(0, 0, 1);
glVertex3f(0, 0, 0);
glVertex3f(0, 0, AXIS_SIZE);
glEnd();
glLineWidth(1);
// draw arrows(actually big square dots)
glPointSize(5);
glBegin(GL_POINTS);
// x
glColor3f(1, 0, 0);
glVertex3f(AXIS_SIZE, 0, 0);
// y
glColor3f(0, 1, 0);
glVertex3f(0, AXIS_SIZE, 0);
// z
glColor3f(0, 0, 1);
glVertex3f(0, 0, AXIS_SIZE);
glEnd();
glPointSize(1);
glPopMatrix();
// restore default settings
glEnable(GL_LIGHTING);
// glDepthFunc(GL_LEQUAL);
}
void OpenGLScene::drawGrid()
{
// disable lighting
glDisable(GL_LIGHTING);
// glDisable(GL_DEPTH_TEST);
// ===== draw transparent plane =====
glBegin(GL_QUADS);
glColor4f(0.6f, 0.7, 1.f, 0.5f);
glVertex3f( GRID_SIZE, 0, GRID_SIZE);
glVertex3f(-GRID_SIZE, 0, GRID_SIZE);
glVertex3f(-GRID_SIZE, 0, -GRID_SIZE);
glVertex3f( GRID_SIZE, 0, -GRID_SIZE);
glEnd();
// ===== draw 20x20 grid =====
glBegin(GL_LINES);
glColor3f(0.5f, 0.5f, 0.5f);
for(float i=GRID_STEP; i <= GRID_SIZE; i+= GRID_STEP)
{
glVertex3f(-GRID_SIZE, 0, i); // lines parallel to X-axis
glVertex3f( GRID_SIZE, 0, i);
glVertex3f(-GRID_SIZE, 0, -i); // lines parallel to X-axis
glVertex3f( GRID_SIZE, 0, -i);
glVertex3f( i, 0, -GRID_SIZE); // lines parallel to Z-axis
glVertex3f( i, 0, GRID_SIZE);
glVertex3f(-i, 0, -GRID_SIZE); // lines parallel to Z-axis
glVertex3f(-i, 0, GRID_SIZE);
}
// x-axis
glLineWidth(3);
glColor3f(1, 0, 0);
glVertex3f(-GRID_SIZE, 0, 0);
glVertex3f( GRID_SIZE, 0, 0);
// z-axis
glColor3f(0, 0, 1);
glVertex3f(0, 0, -GRID_SIZE);
glVertex3f(0, 0, GRID_SIZE);
glEnd();
// enable lighting back
glEnable(GL_LIGHTING);
// glEnable(GL_DEPTH_TEST);
}
void OpenGLScene::loadModel()
{
loadModel(QFileDialog::getOpenFileName(0, tr("Choose model"), QString(), QLatin1String("*.obj *.stl *.gcode")));
}
void OpenGLScene::loadModel(const QString &filePath)
{
if (filePath.isEmpty())
return;
m_modelButton->setEnabled(false);
QApplication::setOverrideCursor(Qt::BusyCursor);
#ifndef QT_NO_CONCURRENT
m_modelLoader.setFuture(QtConcurrent::run(::loadModel, filePath));
#else
setModel(::loadModel(filePath));
modelLoaded();
#endif
}
void OpenGLScene::modelLoaded()
{
#ifndef QT_NO_CONCURRENT
setModel(m_modelLoader.result());
#endif
m_modelButton->setEnabled(true);
QApplication::restoreOverrideCursor();
}
void OpenGLScene::enableWireframe(bool enabled)
{
m_wireframeEnabled = enabled;
update();
}
void OpenGLScene::enableNormals(bool enabled)
{
m_normalsEnabled = enabled;
update();
}
void OpenGLScene::enableGCodeMotion(bool enabled)
{
m_gcodeMotionEnabled = enabled;
update();
}
void OpenGLScene::enableGCodeLines(bool enabled)
{
m_gcodeLinesEnabled = enabled;
update();
}
void OpenGLScene::setModel(Model *model)
{
delete m_model;
m_model = model;
m_labels[0]->setText(tr("File: %0").arg(m_model->fileName()));
m_labels[1]->setText(tr("Points: %0").arg(m_model->points()));
m_labels[2]->setText(tr("Edges: %0").arg(m_model->edges()));
m_labels[3]->setText(tr("Faces: %0").arg(m_model->faces()));
m_slider->setRange(0, m_model->gcodeCount());
update();
}
void OpenGLScene::setModelColor()
{
const QColor color = QColorDialog::getColor(m_modelColor);
if (color.isValid()) {
m_modelColor = color;
update();
}
}
void OpenGLScene::setBackgroundColor()
{
const QColor color = QColorDialog::getColor(m_backgroundColor);
if (color.isValid()) {
m_backgroundColor = color;
update();
}
}
void OpenGLScene::mousePressEvent(QGraphicsSceneMouseEvent *event)
{
QGraphicsScene::mousePressEvent(event);
if (event->isAccepted())
return;
if (event->buttons() & Qt::LeftButton) {
#ifdef QUATERNION_CAMERA
m_trackBall->push(pixelPosToViewPos(event->scenePos()), QQuaternion());
#endif
}
event->accept();
}
void OpenGLScene::mouseMoveEvent(QGraphicsSceneMouseEvent *event)
{
QGraphicsScene::mouseMoveEvent(event);
if (event->isAccepted())
return;
if (event->buttons() & Qt::LeftButton) {
#ifdef QUATERNION_CAMERA
m_trackBall->move(pixelPosToViewPos(event->scenePos()), QQuaternion());
#else
// const QPointF delta = event->scenePos() - event->lastScenePos();
// const Point3d angularImpulse = Point3d(delta.y(), delta.x(), 0) * 0.1;
// m_rotation += angularImpulse;
// === modified ===
// m_cameraAngleX += angularImpulse.x;
// m_cameraAngleY += angularImpulse.y;
#endif
event->accept();
update();
} else {
m_trackBall->release(pixelPosToViewPos(event->scenePos()), QQuaternion());
}
}
void OpenGLScene::mouseReleaseEvent(QGraphicsSceneMouseEvent *event)
{
QGraphicsScene::mouseReleaseEvent(event);
if (event->isAccepted())
return;
#ifdef QUATERNION_CAMERA
m_trackBall->release(pixelPosToViewPos(event->scenePos()), QQuaternion());
#endif
event->accept();
update();
}
void OpenGLScene::wheelEvent(QGraphicsSceneWheelEvent *event)
{
QGraphicsScene::wheelEvent(event);
if (event->isAccepted())
return;
#ifdef QUATERNION_CAMERA
m_distExp += event->delta();
if (m_distExp < -8 * 120)
m_distExp = -8 * 120;
if (m_distExp > 10 * 700)
m_distExp = 10 * 700;
#else
// 1.2 ^ (-delta / 120)f
// m_distance *= qPow(1.2, -event->delta() / 120);
// m_cameraDistance *= qPow(1.2, -event->delta() / 120);
#endif
event->accept();
update();
}
QPointF OpenGLScene::pixelPosToViewPos(const QPointF& p)
{
return QPointF(2.0 * float(p.x()) / width() - 1.0,
1.0 - 2.0 * float(p.y()) / height());
}
void OpenGLScene::translateX(int value)
{
qDebug() << Q_FUNC_INFO << value;