QT – qwtplot3d-3D图标

QT – qwtplot3d-3D图标

• 一、演示效果
• 二、关键程序
• 三、下载链接

一、演示效果

二、关键程序

#include "qwt3d_axis.h"using namespace Qwt3D;Axis::Axis(){init();};Axis::~Axis(){}Axis::Axis(Triple beg, Triple end){ init();setPosition(beg,end);}void Axis::init(){detachAll();scale_ = qwt3d_ptr<Scale>(new LinearScale);beg_ = Triple(0.0, 0.0, 0.0);end_ = beg_;majorintervals_ = 0;minorintervals_ = 0;setMajors(1);setMinors(1);setLimits(0,0);setTicOrientation(0.0, 0.0, 0.0);setTicLength(0.0, 0.0);setColor(0.0, 0.0, 0.0);setLineWidth(1.0);symtics_ = false;drawNumbers_ = false;drawLabel_ = false;drawTics_ = false;autoscale_ = true;markerLabel_.clear();numberfont_ = QFont("Courier",12);setLabelFont(QFont("Courier",14));numbercolor_ = RGBA(0,0,0,0);setNumberAnchor(Center);numbergap_ = 0;labelgap_ = 0;}void Axis::setPosition(const Triple& beg, const Triple& end){beg_ = beg;end_ = end;}void Axis::setMajors(int val){if (val == majorintervals_)return;majorintervals_ = (val<=0) " />1 : val; // always >= 1}/*!\see LogScale::setMinors().*/void Axis::setMinors(int val){if (val == minorintervals_)return;minorintervals_ = (val<=0) ? 1 : val; // always >= 1}void Axis::setTicLength(double majorl, double minorl){lmaj_ = majorl;lmin_ = minorl;}void Axis::setTicOrientation(double tx, double ty, double tz){setTicOrientation(Triple(tx,ty,tz));}void Axis::setTicOrientation(const Triple& val){orientation_ = val;orientation_.normalize();}/**\param val thickness for axis base line\param majfac relative thickness for axis major tics (majfac*val)\param minfac relative thickness for axis minor tics (minfac*val)*/void Axis::setLineWidth(double val, double majfac, double minfac){lineWidth_ = val;majLineWidth_ = majfac * lineWidth_;minLineWidth_ = minfac * lineWidth_;}void Axis::draw(){Drawable::draw();saveGLState();//GLStateBewarer sb(GL_LINE_SMOOTH, true);//glBlendFunc(GL_ONE, GL_ZERO);glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);glColor4d(color.r,color.g,color.b,color.a);drawBase();drawTics();drawLabel();restoreGLState();}/**Always use AFTER drawNumbers() ! (Needs length of number string)*/void Axis::drawLabel(){if (!drawLabel_)return;Triple diff = end() - begin();Triple center = begin() + diff/2;Triple bnumber = biggestNumberString(); //double fac = 6*(second()-first()).length() / 100;switch (scaleNumberAnchor_) {case BottomLeft:case TopLeft:case CenterLeft:bnumber.y = 0;break;case BottomRight:case TopRight:case CenterRight:bnumber.x = -bnumber.x;bnumber.y = 0;break;case TopCenter:bnumber.x = 0;bnumber.y = -bnumber.y;break;case BottomCenter:bnumber.x = 0;break;default:break;}Triple pos = ViewPort2World(World2ViewPort(center + ticOrientation() * lmaj_) + bnumber);setLabelPosition(pos, scaleNumberAnchor_);label_.adjust(labelgap_);label_.draw();}void Axis::drawBase(){setDeviceLineWidth( lineWidth_ );glBegin( GL_LINES );glVertex3d( beg_.x, beg_.y, beg_.z); glVertex3d( end_.x, end_.y, end_.z);glEnd();}bool Axis::prepTicCalculation(Triple& startpoint){if (isPracticallyZero(start_, stop_))return false;autostart_ = start_;autostop_ = stop_; if (autoScale()) {setMajors(scale_->autoscale(autostart_, autostop_, start_, stop_, majors()));if (isPracticallyZero(autostart_, autostop_))return false;}scale_->setLimits(start_,stop_);scale_->setMajors(majors());scale_->setMinors(minors());scale_->setMajorLimits(autostart_,autostop_);scale_->calculate();Triple normal = (end_ - beg_);//normal.normalize();Triple beg = beg_ + ((autostart_ - start_) / (stop_ - start_)) * normal;Triple end = end_ - ((stop_ - autostop_) / (stop_ - start_))* normal;startpoint = end_ - beg_;majorpos_.clear();minorpos_.clear();return true;}void Axis::recalculateTics(){Triple runningpoint;if (false==prepTicCalculation(runningpoint))return;unsigned int i;for (i = 0; i != scale_->majors_p.size(); ++i) {double t = (scale_->majors_p[i] - start_) / (stop_-start_);majorpos_.push_back(beg_ + t * runningpoint);}for (i = 0; i != scale_->minors_p.size(); ++i) {double t = (scale_->minors_p[i] - start_) / (stop_-start_);minorpos_.push_back(beg_ + t * runningpoint);}}void Axis::drawTics(){Triple runningpoint;if (!drawTics_ || false==prepTicCalculation(runningpoint))return;unsigned int i;Triple nadir;markerLabel_.resize(scale_->majors_p.size());setDeviceLineWidth(majLineWidth_);for (i = 0; i != scale_->majors_p.size(); ++i) {double t = (scale_->majors_p[i] - start_) / (stop_-start_);nadir = beg_ + t * runningpoint;majorpos_.push_back(drawTic(nadir, lmaj_));drawTicLabel(nadir + 1.2 * lmaj_ * orientation_, i);}setDeviceLineWidth(minLineWidth_);for (i = 0; i != scale_->minors_p.size(); ++i) {double t = (scale_->minors_p[i] - start_) / (stop_-start_);nadir = beg_ + t * runningpoint;minorpos_.push_back(drawTic(nadir, lmin_));}}void Axis::drawTicLabel(Triple pos, int mtic){if (!drawNumbers_ || (mtic < 0))return;markerLabel_[mtic].setFont(numberfont_.family(), numberfont_.pointSize(), numberfont_.weight(), numberfont_.italic());markerLabel_[mtic].setColor(numbercolor_);markerLabel_[mtic].setString(scale_->ticLabel(mtic));markerLabel_[mtic].setPosition(pos, scaleNumberAnchor_);markerLabel_[mtic].adjust(numbergap_);markerLabel_[mtic].draw();}Triple Axis::drawTic(Triple nadir, double length){double ilength = (symtics_) ? -length : 0.0;glBegin( GL_LINES );glVertex3d( nadir.x+ ilength * orientation_.x,nadir.y+ ilength * orientation_.y,nadir.z+ ilength * orientation_.z) ; glVertex3d( nadir.x+ length * orientation_.x,nadir.y+ length * orientation_.y,nadir.z+ length * orientation_.z);glEnd();return nadir;}void Axis::setNumberFont(QString const& family, int pointSize, int weight, bool italic){numberfont_ = QFont(family, pointSize, weight, italic );}void Axis::setNumberFont(QFont const& font){numberfont_ = font;}void Axis::setNumberColor(RGBA col){numbercolor_ = col;}void Axis::setLabelFont(QString const& family, int pointSize, int weight, bool italic){labelfont_ = QFont(family, pointSize, weight, italic );label_.setFont(family, pointSize, weight, italic);}void Axis::setLabelFont(QFont const& font){setLabelFont(font.family(), font.pointSize(), font.weight(), font.italic());}void Axis::setLabelString(QString const& name){label_.setString(name);}/*!Sets label position in conjunction with an anchoring strategy*/void Axis::setLabelPosition(const Triple& pos,Qwt3D::ANCHOR an){label_.setPosition(pos, an);}//! Sets color for labelvoid Axis::setLabelColor(RGBA col){label_.setColor(col);}Triple Axis::biggestNumberString(){Triple ret;unsigned size = markerLabel_.size();double width, height;for (unsigned i=0; i!=size; ++i){width = fabs( (World2ViewPort(markerLabel_[i].second())-World2ViewPort(markerLabel_[i].first())).x );height = fabs( (World2ViewPort(markerLabel_[i].second())-World2ViewPort(markerLabel_[i].first())).y );if (width > ret.x)ret.x = width + markerLabel_[i].gap();if (height > ret.y)ret.y = height + markerLabel_[i].gap();;}return ret;}/*! This variant sets a user-defined scale object.Use with a heap based initialized pointer only.The axis adopts ownership. */void Axis::setScale(Scale* val){scale_ = qwt3d_ptr<Scale>(val); }/*!Sets one of the predefined scaling types.\warning Too small intervals in logarithmic scales lead toempty scales (or perhaps a scale only containing an isolated major tic). Better switch to linear scales in such cases.*/void Axis::setScale(Qwt3D::SCALETYPE val){switch(val) {case Qwt3D::LINEARSCALE:setScale(new LinearScale);break;case Qwt3D::LOG10SCALE:setScale(new LogScale);setMinors(9);break;default:break;}}

三、下载链接

https://download.csdn.net/download/u013083044/88745622?spm=1001.2014.3001.5503