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//##########################################################################
//# #
//# CLOUDCOMPARE #
//# #
//# 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; version 2 or later of the License. #
//# #
//# 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. #
//# #
//# COPYRIGHT: EDF R&D / TELECOM ParisTech (ENST-TSI) #
//# #
//##########################################################################
#include "ccIncludeGL.h"
//Local
#include "cc2DViewportLabel.h"
//CCLib
#include <CCConst.h>
//Qt
#include <QDataStream>
#include <QFontMetrics>
//system
#include <string.h>
cc2DViewportLabel::cc2DViewportLabel(QString name/*=QString()*/)
: cc2DViewportObject(name)
{
//label rectangle
memset(m_roi,0,sizeof(float)*4);
setVisible(false);
}
void cc2DViewportLabel::setRoi(const float* roi)
{
memcpy(m_roi,roi,sizeof(float)*4);
}
bool cc2DViewportLabel::toFile_MeOnly(QFile& out) const
{
if (!cc2DViewportObject::toFile_MeOnly(out))
return false;
//ROI (dataVersion>=21)
QDataStream outStream(&out);
for (int i=0; i<4; ++i)
outStream << m_roi[i];
return true;
}
bool cc2DViewportLabel::fromFile_MeOnly(QFile& in, short dataVersion, int flags)
{
if (!cc2DViewportObject::fromFile_MeOnly(in, dataVersion, flags))
return false;
if (dataVersion < 21)
return false;
//ROI (dataVersion>=21)
QDataStream inStream(&in);
for (int i=0; i<4; ++i)
inStream >> m_roi[i];
return true;
}
void cc2DViewportLabel::drawMeOnly(CC_DRAW_CONTEXT& context)
{
//2D foreground only
if (!MACRO_Foreground(context) || !MACRO_Draw2D(context))
return;
//get the set of OpenGL functions (version 2.1)
QOpenGLFunctions_2_1 *glFunc = context.glFunctions<QOpenGLFunctions_2_1>();
assert( glFunc != nullptr );
if ( glFunc == nullptr )
return;
//test viewport parameters
const ccViewportParameters& params = context.display->getViewportParameters();
//general parameters
if ( params.perspectiveView != m_params.perspectiveView
|| params.objectCenteredView != m_params.objectCenteredView
|| params.pixelSize != m_params.pixelSize)
{
return;
}
//test base view matrix
for (unsigned i = 0; i < 12; ++i)
if (fabs(params.viewMat.data()[i] - m_params.viewMat.data()[i]) > ZERO_TOLERANCE)
return;
if (m_params.perspectiveView)
{
if (params.fov != m_params.fov || params.perspectiveAspectRatio != m_params.perspectiveAspectRatio)
return;
if ((params.pivotPoint - m_params.pivotPoint).norm() > ZERO_TOLERANCE
|| (params.cameraCenter - m_params.cameraCenter).norm() > ZERO_TOLERANCE)
return;
}
else
{
if (params.orthoAspectRatio != m_params.orthoAspectRatio)
return;
}
glFunc->glPushAttrib(GL_LINE_BIT);
float relativeZoom = 1.0f;
float dx = 0, dy = 0;
if (!m_params.perspectiveView) //ortho mode
{
//Screen pan & pivot compensation
float totalZoom = m_params.zoom / m_params.pixelSize;
float winTotalZoom = params.zoom / params.pixelSize;
relativeZoom = winTotalZoom / totalZoom;
CCVector3d dC = m_params.cameraCenter - params.cameraCenter;
CCVector3d P = m_params.pivotPoint - params.pivotPoint;
m_params.viewMat.apply(P);
dx = static_cast<float>(dC.x + P.x);
dy = static_cast<float>(dC.y + P.y);
dx *= winTotalZoom;
dy *= winTotalZoom;
}
//thick dotted line
glFunc->glLineWidth(2);
glFunc->glLineStipple(1, 0xAAAA);
glFunc->glEnable(GL_LINE_STIPPLE);
const ccColor::Rgb* defaultColor = m_selected ? &ccColor::red : &context.textDefaultCol;
glFunc->glColor3ubv(defaultColor->rgb);
glFunc->glBegin(GL_LINE_LOOP);
glFunc->glVertex2f(dx + m_roi[0] * relativeZoom, dy + m_roi[1] * relativeZoom);
glFunc->glVertex2f(dx + m_roi[2] * relativeZoom, dy + m_roi[1] * relativeZoom);
glFunc->glVertex2f(dx + m_roi[2] * relativeZoom, dy + m_roi[3] * relativeZoom);
glFunc->glVertex2f(dx + m_roi[0] * relativeZoom, dy + m_roi[3] * relativeZoom);
glFunc->glEnd();
glFunc->glPopAttrib();
//title
QString title(getName());
if (!title.isEmpty())
{
QFont titleFont(context.display->getTextDisplayFont()); //takes rendering zoom into account!
titleFont.setBold(true);
QFontMetrics titleFontMetrics(titleFont);
int titleHeight = titleFontMetrics.height();
int xStart = static_cast<int>(dx + 0.5f * context.glW + std::min<float>(m_roi[0], m_roi[2]) * relativeZoom);
int yStart = static_cast<int>(dy + 0.5f * context.glH + std::min<float>(m_roi[1], m_roi[3]) * relativeZoom);
context.display->displayText(title, xStart, yStart - 5 - titleHeight, ccGenericGLDisplay::ALIGN_DEFAULT, 0, defaultColor->rgb, &titleFont);
}
}
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