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Code Issues Releases Wiki Activity

Editor: Account for pixel ratio in instance mode mouse coordinates conversion (#6573)

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This commit is contained in:
Alexei Kotov 2025-03-13 18:42:55 +03:00
parent fdba5d4cb7
commit 34a5eb7512
1 changed files with 9 additions and 7 deletions
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16
apps/opencs/view/render/instancemode.cpp
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@ -171,16 +171,18 @@ osg::Vec3f CSVRender::InstanceMode::getProjectionSpaceCoords(const osg::Vec3f& p
osg::Vec3f CSVRender::InstanceMode::getMousePlaneCoords(const QPoint& point, const osg::Vec3d& dragStart)
{
osg::Matrix viewMatrix;
viewMatrix.invert(getWorldspaceWidget().getCamera()->getViewMatrix());
osg::Matrix projMatrix;
projMatrix.invert(getWorldspaceWidget().getCamera()->getProjectionMatrix());
osg::Matrix combined = projMatrix * viewMatrix;
const osg::Matrix viewMatrix = getWorldspaceWidget().getCamera()->getViewMatrix();
const osg::Matrix projMatrix = getWorldspaceWidget().getCamera()->getProjectionMatrix();
const osg::Matrix combined = osg::Matrix::inverse(viewMatrix * projMatrix);
/* calculate viewport normalized coordinates
note: is there a reason to use getCamera()->getViewport()->computeWindowMatrix() instead? */
float x = (point.x() * 2) / getWorldspaceWidget().getCamera()->getViewport()->width() - 1.0f;
float y = 1.0f - (point.y() * 2) / getWorldspaceWidget().getCamera()->getViewport()->height();
const float scale = getWorldspaceWidget().devicePixelRatioF();
const osg::Viewport* viewport = getWorldspaceWidget().getCamera()->getViewport();
float x = point.x() * scale / viewport->width();
float y = point.y() * scale / viewport->height();
x = x * 2.0f - 1.0f;
y = 1.0f - y * 2.0f;
osg::Vec3f mousePlanePoint = osg::Vec3f(x, y, dragStart.z()) * combined;