qt opengl lesson3 给三角形和正方形上色
2017-01-19 23:03
459 查看
之前每章的结构基本相同,很多函数不需要现在明白什么道理,可能设计到一些空间图形和计算机学的知识,可以放在需要的时候专门学习。
#------------------------------------------------- # # Project created by QtCreator 2017-01-19T22:12:43 # #------------------------------------------------- QT += core gui greaterThan(QT_MAJOR_VERSION, 4): QT += widgets opengl TARGET = lesson3 TEMPLATE = app # The following define makes your compiler emit warnings if you use # any feature of Qt which as been marked as deprecated (the exact warnings # depend on your compiler). Please consult the documentation of the # deprecated API in order to know how to port your code away from it. DEFINES += QT_DEPRECATED_WARNINGS # You can also make your code fail to compile if you use deprecated APIs. # In order to do so, uncomment the following line. # You can also select to disable deprecated APIs only up to a certain version of Qt. #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0 SOURCES += main.cpp\ myglwidget.cpp HEADERS += myglwidget.h LIBS += -lglut -lGLU
#ifndef MYGLWIDGET_H #define MYGLWIDGET_H #include <QGLWidget> #include <QKeyEvent> class MyGLwidget : public QGLWidget { Q_OBJECT public: MyGLwidget(QWidget *parent = 0); ~MyGLwidget(); protected: virtual void paintGL(); virtual void initializeGL(); virtual void resizeGL(int width, int height); virtual void keyPressEvent(QKeyEvent *event); private: bool mFullScreen; }; #endif // MYGLWIDGET_H
#include "myglwidget.h" #include <GL/glu.h> #include <QApplication> MyGLwidget::MyGLwidget(QWidget *parent) { showNormal(); } MyGLwidget::~MyGLwidget() { } void MyGLwidget::paintGL() { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); glTranslatef(-1.5f, 0.0f, -6.0f); // draw triangle glBegin(GL_TRIANGLES); glColor3f(1.0f, 0.0f, 0.0f); glVertex3f(0.0f, 1.0f, 0.0f); glColor3f(0.0f, 1.0f, 0.0f); glVertex3f(-1.2f, -1.0f, 0.0f); glColor3f(0.0f, 0.0f, 1.0f); glVertex3f(1.2f, -1.0f, 0.0f); glEnd(); glTranslatef(3.0f, 0.0f, 0.0f); glColor3f(1.0f, 1.0f, 0.0f); glBegin(GL_QUADS); glVertex3f(-1.0f, 1.0f, 0.0f); glVertex3f(1.0f, 1.0f, 0.0f); glVertex3f(1.0f, -1.0f, 0.0f); glVertex3f(-1.0f, -1.0f, 0.0f); glEnd(); } void MyGLwidget::initializeGL() { glShadeModel(GL_SMOOTH); glClearColor(0.0f, 0.0f, 1.0f, 0.0f); glClearDepth(1.0f); glEnable(GL_DEPTH_TEST); glDepthFunc(GL_LEQUAL); glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST); } void MyGLwidget::resizeGL(int width, int height) { if (height == 0) height = 1; glViewport(0, 0, width, height); glMatrixMode(GL_PROJECTION); glLoadIdentity(); gluPerspective(45.0f, (GLfloat)width/(GLfloat)height, 0.1f, 100.0f); glMatrixMode(GL_MODELVIEW); glLoadIdentity(); } void MyGLwidget::keyPressEvent(QKeyEvent *event) { switch(event->key()) { case Qt::Key_F2: mFullScreen = !mFullScreen; if (mFullScreen) showFullScreen(); else showNormal(); updateGL(); break; case Qt::Key_Escape: qApp->exit(); break; } }
#include "myglwidget.h" #include <QApplication> int main(int argc, char *argv[]) { QApplication a(argc, argv); MyGLwidget w; w.show(); return a.exec(); }
相关文章推荐
- qt opengl lesson2 绘制一个三角形和一个正方形
- 基于Qt的OpenGL编程(3.x以上GLSL可编程管线版)---(二)你好,三角形_QOpenGLShader版
- OpenGL程序:绘制正方形和三角形
- OpenGL绘制三角形、正方形
- Android OpenGL入门示例:绘制三角形和正方形 (附完整源码)
- 基于Qt的OpenGL编程(3.x以上GLSL可编程管线版)---(二)你好,三角形_QOpenGLExtraFunctions版
- android中OpenGl初步(平面三角形,正方形)
- Qt OpenGL:学习现代3D图形编程之三,移动三角形
- 基于Qt的OpenGL编程(3.x以上GLSL可编程管线版)---(二)你好,三角形_QOpenGLFunctions_3_3_Core版
- 整理 qt opengl,自己的基础框架 —— 绘制一个彩色三角形
- Android OpenGL入门示例:绘制三角形和正方形 (附完整源码)
- ArcEngine+OpenGL之五 三角形上色(转)
- Opengl 学习 包含画三角形,正方形,贴图,鱼眼矫正
- ArcEngine+OpenGL之五 三角形上色(转)
- QT中使用OpenGL(1)——画一个三角形
- 基于Qt的OpenGL可编程管线学习(1)- 绘制一个三角形
- qt opengl lesson4 围绕不同轴旋转图形
- qt opengl lesson1 建立一个opengl窗口
- QT5 OPenGL(二,平面图形上色)
- QT5.7中使用OpenGL开发记录(二)---- 绘制三角形