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C++ GraphicLayer::translateScreenToData方法代码示例

本文整理汇总了C++中GraphicLayer::translateScreenToData方法的典型用法代码示例。如果您正苦于以下问题:C++ GraphicLayer::translateScreenToData方法的具体用法?C++ GraphicLayer::translateScreenToData怎么用?C++ GraphicLayer::translateScreenToData使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在GraphicLayer的用法示例。


在下文中一共展示了GraphicLayer::translateScreenToData方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: updateBoundingBox

void TextObjectImp::updateBoundingBox()
{
   // Get the width and height of the bounding box in screen pixels based on the scaled text image size
   int iWidth = 0;
   int iHeight = 0;

   string text = getSubstitutedText();
   if (text.empty() == false)
   {
      QString strMessage = QString::fromStdString(text);
      QFont scaledFont = getScaledFont();

      int iMaxSize = 0;
      glGetIntegerv(GL_MAX_TEXTURE_SIZE, &iMaxSize);

      int iAlignment = getTextAlignment();

      QFontMetrics ftMetrics(scaledFont);
      QRect boundingBox = ftMetrics.boundingRect(0, 0, iMaxSize, iMaxSize,
         iAlignment | Qt::TextWordWrap, strMessage);

      iWidth = boundingBox.width();
      iHeight = boundingBox.height();
   }

   // Get the current bounding box
   LocationType llCorner = getLlCorner();
   LocationType urCorner = getUrCorner();

   // Use the lower left corner as the anchor and compute the data coordinate of the upper right corner
   GraphicLayer* pLayer = getLayer();
   if (pLayer != NULL)
   {
      // Compute the upper right coordinate
      PerspectiveView* pView = dynamic_cast<PerspectiveView*>(pLayer->getView());
      if (pView != NULL)
      {
         double zoomFactor = 100.0 / pView->getZoomPercentage();
         double xScale = zoomFactor / pLayer->getXScaleFactor();
         double yScale = zoomFactor / pLayer->getYScaleFactor();

         urCorner.mX = llCorner.mX + (iWidth * xScale);
         urCorner.mY = llCorner.mY + (iHeight * yScale);
      }

      if (dynamic_cast<OrthographicView*>(pLayer->getView()) != NULL)
      {
         double dScreenX = 0.0;
         double dScreenY = 0.0;
         pLayer->translateDataToScreen(llCorner.mX, llCorner.mY, dScreenX, dScreenY);
         pLayer->translateScreenToData(dScreenX + iWidth, dScreenY + iHeight, urCorner.mX, urCorner.mY);
      }
   }
   else
   {
      urCorner.mX = llCorner.mX + iWidth;
      urCorner.mY = llCorner.mY + iHeight;
   }

   // Update the bounding box and selection handles
   setBoundingBox(llCorner, urCorner);
   updateHandles();

   mUpdateBoundingBox = false;
}
开发者ID:Siddharthk,项目名称:opticks,代码行数:65,代码来源:TextObjectImp.cpp


注:本文中的GraphicLayer::translateScreenToData方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。