tanner/unnamed-cad-software
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

feat: Implement middle-mouse rotation around grid intersection with visual pivot

Browse Source 
Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>
This commit is contained in:
Tanner Collin
2026-02-17 13:04:33 -07:00
parent 68eeeb11ec
commit 88199a9d51
3 changed files with 90 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

45
src/Camera.cpp
View File

@@ -88,8 +88,15 @@ QMatrix4x4 Camera::modelViewMatrix() const
{
QMatrix4x4 model;
model.translate(m_panX, m_panY, m_zoom);
if (m_isRotating) {
model.translate(m_rotationPivot);
}
model.rotate(m_xRot / 16.0f, 1, 0, 0);
model.rotate(m_yRot / 16.0f, 0, 1, 0);
if (m_isRotating) {
model.translate(-m_rotationPivot);
}
return model;
}
@@ -217,6 +224,44 @@ void Camera::animateToPlaneView(int plane)
animGroup->start(QAbstractAnimation::DeleteWhenStopped);
}
void Camera::startRotation(const QVector3D& pivot)
{
m_rotationPivot = pivot;
QMatrix4x4 rotation;
rotation.rotate(m_xRot / 16.0f, 1, 0, 0);
rotation.rotate(m_yRot / 16.0f, 0, 1, 0);
QVector3D p_rotated = rotation.map(m_rotationPivot);
QVector3D p_diff = p_rotated - m_rotationPivot;
setPanX(m_panX + p_diff.x());
setPanY(m_panY + p_diff.y());
setZoom(m_zoom + p_diff.z());
m_isRotating = true;
}
void Camera::stopRotation()
{
if (!m_isRotating) {
return;
}
QMatrix4x4 rotation;
rotation.rotate(m_xRot / 16.0f, 1, 0, 0);
rotation.rotate(m_yRot / 16.0f, 0, 1, 0);
QVector3D p_rotated = rotation.map(m_rotationPivot);
QVector3D p_diff = p_rotated - m_rotationPivot;
setPanX(m_panX - p_diff.x());
setPanY(m_panY - p_diff.y());
setZoom(m_zoom - p_diff.z());
m_isRotating = false;
}
void Camera::animateRestoreState()
{
auto* animGroup = new QParallelAnimationGroup(this);