154 lines
3.3 KiB
C++
154 lines
3.3 KiB
C++
#include <QMouseEvent>
|
|
#include <QCoreApplication>
|
|
#include <math.h>
|
|
#include "fpgaviewwidget.h"
|
|
|
|
FPGAViewWidget::FPGAViewWidget(QWidget *parent)
|
|
: QOpenGLWidget(parent),
|
|
m_xMove(0),m_yMove(0),m_zDistance(1.0)
|
|
{
|
|
|
|
}
|
|
|
|
FPGAViewWidget::~FPGAViewWidget()
|
|
{
|
|
}
|
|
|
|
QSize FPGAViewWidget::minimumSizeHint() const
|
|
{
|
|
return QSize(640, 480);
|
|
}
|
|
|
|
QSize FPGAViewWidget::sizeHint() const
|
|
{
|
|
return QSize(640, 480);
|
|
}
|
|
|
|
void FPGAViewWidget::setXTranslation(float t_x)
|
|
{
|
|
if(t_x != m_xMove)
|
|
{
|
|
m_xMove = t_x;
|
|
update();
|
|
}
|
|
}
|
|
|
|
|
|
void FPGAViewWidget::setYTranslation(float t_y)
|
|
{
|
|
if(t_y != m_yMove)
|
|
{
|
|
m_yMove = t_y;
|
|
update();
|
|
}
|
|
}
|
|
|
|
|
|
void FPGAViewWidget::setZoom(float t_z)
|
|
{
|
|
if(t_z != m_zDistance)
|
|
{
|
|
m_zDistance -= t_z;
|
|
if(m_zDistance < 0.1f)
|
|
m_zDistance = 0.1f;
|
|
if(m_zDistance > 10.0f)
|
|
m_zDistance = 10.0f;
|
|
|
|
update();
|
|
}
|
|
}
|
|
|
|
void FPGAViewWidget::initializeGL()
|
|
{
|
|
initializeOpenGLFunctions();
|
|
glClearColor(1.0, 1.0, 1.0, 0.0);
|
|
}
|
|
|
|
void FPGAViewWidget::paintGL()
|
|
{
|
|
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
|
|
glLoadIdentity();
|
|
|
|
glTranslatef(m_xMove, m_yMove, -10.0);
|
|
glScalef(m_zDistance,m_zDistance, 0.0f);
|
|
|
|
// Example grid
|
|
glColor3f(0.8, 0.8, 0.8);
|
|
glBegin(GL_LINES);
|
|
for(float i = -100; i <= 100; i += 0.1)
|
|
{
|
|
glVertex3f((float)i, -100.0f, 0.0f);
|
|
glVertex3f((float)i, 100.0f, 0.0f);
|
|
glVertex3f(-100.0f, (float)i, 0.0f);
|
|
glVertex3f(100.0f, (float)i, 0.0f);
|
|
}
|
|
glColor3f(0.5, 0.5, 0.5);
|
|
for(int i = -100; i <= 100; i += 1)
|
|
{
|
|
glVertex3f((float)i, -100.0f, 0.0f);
|
|
glVertex3f((float)i, 100.0f, 0.0f);
|
|
glVertex3f(-100.0f, (float)i, 0.0f);
|
|
glVertex3f(100.0f, (float)i, 0.0f);
|
|
}
|
|
glEnd();
|
|
|
|
// Example triangle
|
|
glBegin(GL_TRIANGLES);
|
|
glColor3f(1.0, 0.0, 0.0);
|
|
glVertex3f(-0.5, -0.5, 0);
|
|
glColor3f(0.0, 1.0, 0.0);
|
|
glVertex3f(0.5, -0.5, 0);
|
|
glColor3f(0.0, 0.0, 1.0);
|
|
glVertex3f(0, 0.5, 0);
|
|
glEnd();
|
|
|
|
}
|
|
|
|
void FPGAViewWidget::resizeGL(int width, int height)
|
|
{
|
|
m_windowWidth = width;
|
|
m_windowHeight = height;
|
|
glViewport(0, 0, m_windowWidth, m_windowHeight);
|
|
|
|
float aspect = width * 1.0 / height;
|
|
|
|
glMatrixMode(GL_PROJECTION);
|
|
glLoadIdentity();
|
|
glOrtho(-1.0* aspect, +1.0* aspect, -1.0, +1.0, 1.0, 15.0);
|
|
glMatrixMode(GL_MODELVIEW);
|
|
}
|
|
|
|
void FPGAViewWidget::mousePressEvent(QMouseEvent *event)
|
|
{
|
|
m_lastPos = event->pos();
|
|
}
|
|
|
|
void FPGAViewWidget::mouseMoveEvent(QMouseEvent *event)
|
|
{
|
|
int dx = event->x() - m_lastPos.x();
|
|
int dy = event->y() - m_lastPos.y();
|
|
float dx_scale = dx * (1 / (float)640);
|
|
float dy_scale = -dy * (1 / (float)480);
|
|
|
|
if (event->buttons() & Qt::LeftButton)
|
|
{
|
|
float xpos = m_xMove + dx_scale;
|
|
float ypos = m_yMove + dy_scale;
|
|
if (m_xMove/m_zDistance <= 100.0 && m_xMove/m_zDistance>= -100.0) setXTranslation(xpos);
|
|
if (m_yMove/m_zDistance <= 100.0 && m_yMove/m_zDistance>= -100.0) setYTranslation(ypos);
|
|
|
|
}
|
|
m_lastPos = event->pos();
|
|
}
|
|
|
|
void FPGAViewWidget::wheelEvent(QWheelEvent *event)
|
|
{
|
|
QPoint degree = event->angleDelta() / 8;
|
|
|
|
if(!degree.isNull())
|
|
{
|
|
QPoint step = degree / 15;
|
|
setZoom(step.y() * -0.1f);
|
|
}
|
|
}
|