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feat: Add vertex snapping and draw line endpoints

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Co-authored-by: aider (gemini/gemini-2.5-pro) <aider@aider.chat>
This commit is contained in:
Tanner Collin
2026-02-14 22:16:14 -07:00
parent 78ac60926d
commit 6e64856f23
2 changed files with 86 additions and 0 deletions
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84
src/ViewportWidget.cpp
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@@ -161,6 +161,30 @@ void ViewportWidget::paintGL()
}
glEnd();
glDisable(GL_BLEND);
} else if (m_isSnappingVertex) {
const float rectSize = 0.0075f * -m_zoom;
glColor4f(1.0, 1.0, 0.0, 0.5f);
glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glBegin(GL_LINE_LOOP);
if (m_currentPlane == SketchPlane::XY) {
glVertex3f(m_snapVertex.X() - rectSize, m_snapVertex.Y() - rectSize, m_snapVertex.Z());
glVertex3f(m_snapVertex.X() + rectSize, m_snapVertex.Y() - rectSize, m_snapVertex.Z());
glVertex3f(m_snapVertex.X() + rectSize, m_snapVertex.Y() + rectSize, m_snapVertex.Z());
glVertex3f(m_snapVertex.X() - rectSize, m_snapVertex.Y() + rectSize, m_snapVertex.Z());
} else if (m_currentPlane == SketchPlane::XZ) {
glVertex3f(m_snapVertex.X() - rectSize, m_snapVertex.Y(), m_snapVertex.Z() - rectSize);
glVertex3f(m_snapVertex.X() + rectSize, m_snapVertex.Y(), m_snapVertex.Z() - rectSize);
glVertex3f(m_snapVertex.X() + rectSize, m_snapVertex.Y(), m_snapVertex.Z() + rectSize);
glVertex3f(m_snapVertex.X() - rectSize, m_snapVertex.Y(), m_snapVertex.Z() + rectSize);
} else if (m_currentPlane == SketchPlane::YZ) {
glVertex3f(m_snapVertex.X(), m_snapVertex.Y() - rectSize, m_snapVertex.Z() - rectSize);
glVertex3f(m_snapVertex.X(), m_snapVertex.Y() + rectSize, m_snapVertex.Z() - rectSize);
glVertex3f(m_snapVertex.X(), m_snapVertex.Y() + rectSize, m_snapVertex.Z() + rectSize);
glVertex3f(m_snapVertex.X(), m_snapVertex.Y() - rectSize, m_snapVertex.Z() + rectSize);
}
glEnd();
glDisable(GL_BLEND);
}
if (m_isDefiningLine && m_activeTool == static_cast<int>(ApplicationController::ToolType::Line)) {
@@ -169,6 +193,10 @@ void ViewportWidget::paintGL()
worldPos.setX(0);
worldPos.setY(0);
worldPos.setZ(0);
} else if (m_isSnappingVertex) {
worldPos.setX(m_snapVertex.X());
worldPos.setY(m_snapVertex.Y());
worldPos.setZ(m_snapVertex.Z());
}
glBegin(GL_LINES);
glColor3f(1.0, 1.0, 0.0);
@@ -209,6 +237,8 @@ void ViewportWidget::mousePressEvent(QMouseEvent *event)
gp_Pnt p;
if (m_isSnappingOrigin) {
p.SetCoord(0, 0, 0);
} else if (m_isSnappingVertex) {
p = m_snapVertex;
} else {
QVector3D worldPos = unproject(event->pos());
p.SetCoord(worldPos.x(), worldPos.y(), worldPos.z());
@@ -253,6 +283,54 @@ void ViewportWidget::mouseMoveEvent(QMouseEvent *event)
if (shouldSnap != m_isSnappingOrigin) {
m_isSnappingOrigin = shouldSnap;
if (m_isSnappingOrigin) {
m_isSnappingVertex = false;
}
update();
}
bool oldIsSnappingVertex = m_isSnappingVertex;
m_isSnappingVertex = false;
if (!m_isSnappingOrigin && m_document && m_currentPlane != SketchPlane::NONE) {
QVector3D worldPos = unproject(m_currentMousePos);
const float snapRectHalfSize = 0.0075f * -m_zoom;
for (Feature* feature : m_document->features()) {
if (auto sketch = dynamic_cast<SketchFeature*>(feature)) {
for (const auto& obj : sketch->objects()) {
if (obj->type() == SketchObject::ObjectType::Line) {
auto line = static_cast<const SketchLine*>(obj);
const gp_Pnt vertices[] = {line->startPoint(), line->endPoint()};
for (const auto& vertex : vertices) {
bool isClose = false;
switch (m_currentPlane) {
case SketchPlane::XY:
isClose = qAbs(worldPos.x() - vertex.X()) < snapRectHalfSize && qAbs(worldPos.y() - vertex.Y()) < snapRectHalfSize;
break;
case SketchPlane::XZ:
isClose = qAbs(worldPos.x() - vertex.X()) < snapRectHalfSize && qAbs(worldPos.z() - vertex.Z()) < snapRectHalfSize;
break;
case SketchPlane::YZ:
isClose = qAbs(worldPos.y() - vertex.Y()) < snapRectHalfSize && qAbs(worldPos.z() - vertex.Z()) < snapRectHalfSize;
break;
case SketchPlane::NONE:
break;
}
if (isClose) {
m_isSnappingVertex = true;
m_snapVertex = vertex;
goto end_snap_check;
}
}
}
}
}
}
end_snap_check:;
}
if (oldIsSnappingVertex != m_isSnappingVertex) {
update();
}
@@ -560,6 +638,7 @@ void ViewportWidget::drawSketch(const SketchFeature* sketch)
glDisable(GL_DEPTH_TEST);
glLineWidth(2.0f);
glColor3f(1.0, 1.0, 1.0);
glPointSize(5.0f);
for (const auto& obj : sketch->objects()) {
if (obj->type() == SketchObject::ObjectType::Line) {
@@ -570,6 +649,11 @@ void ViewportWidget::drawSketch(const SketchFeature* sketch)
glVertex3d(start.X(), start.Y(), start.Z());
glVertex3d(end.X(), end.Y(), end.Z());
glEnd();
glBegin(GL_POINTS);
glVertex3d(start.X(), start.Y(), start.Z());
glVertex3d(end.X(), end.Y(), end.Z());
glEnd();
}
}
glEnable(GL_DEPTH_TEST);