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Commit 483e76d7 authored by Mike Kremer's avatar Mike Kremer
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When moving selections: 

The transformation manipulator now snaps into the origin position if the cursor's distance is smaller than a given tolerance.
Can be bypassed by holding the Alt key when dragging selections.

git-svn-id: http://www.openflipper.org/svnrepo/OpenFlipper/branches/Free@6961 383ad7c9-94d9-4d36-a494-682f7c89f535
parent 3d75edbb
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Inline Side-by-side
ACG/Scenegraph/TranslationManipulatorNode.cc
View file @ 483e76d7
......@@ -73,6 +73,10 @@ namespace SceneGraph {
//== IMPLEMENTATION ==========================================================
// How many pixels should the cursor be away from the dragging center
// for the translation operation to affect the geometry's position
#define SNAP_PIXEL_TOLERANCE 30
// Node colors (normal, over, clicked, occluded normal, occluded over, occluded clicked)
const Vec4f colors[4][6] = {
......@@ -142,6 +146,7 @@ TranslationManipulatorNode( BaseNode* _parent, const std::string& _name )
resize_current_ (0.0),
mode_ (TranslationRotation),
ignoreTime_ (false),
dragging_(false),
auto_size_(TranslationManipulatorNode::Never),
auto_size_length_(1.0)
{
......@@ -396,7 +401,7 @@ bool TranslationManipulatorNode::updateCurrentColors (GLState& _state)
//----------------------------------------------------------------------------
void TranslationManipulatorNode::drawMaipulator (GLState& _state, bool _active)
void TranslationManipulatorNode::drawManipulator (GLState& _state, bool _active)
{
glPushAttrib(GL_ENABLE_BIT );
glDisable( GL_CULL_FACE );
......@@ -694,12 +699,12 @@ TranslationManipulatorNode::draw(GLState& _state, unsigned int /* _drawMode */ )
glDepthMask(GL_FALSE);
glEnable (GL_BLEND);
glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
drawMaipulator(_state, false);
drawManipulator(_state, false);
glDisable (GL_BLEND);
glDepthFunc(GL_LEQUAL);
glDepthMask(GL_TRUE);
drawMaipulator(_state, true);
drawManipulator(_state, true);
// Restore old attributes and modelview
glPopAttrib();
......@@ -755,6 +760,12 @@ TranslationManipulatorNode::mouseEvent(GLState& _state, QMouseEvent* _event)
for (i = 0; i < NumElements; i++)
element_[i].clicked_ = false;
// Start dragging process
if(!dragging_) {
draggingOrigin3D_ = center();
dragging_ = true;
}
// hit origin ?
if (mode_ != LocalRotation)
element_[Origin].clicked_ = hitSphere(_state, newPoint2D);
......@@ -817,6 +828,7 @@ TranslationManipulatorNode::mouseEvent(GLState& _state, QMouseEvent* _event)
any_top_clicked_ = false;
outer_ring_clicked_ = false;
ignoreTime_ = true;
dragging_ = false;
break;
}
......@@ -913,22 +925,38 @@ TranslationManipulatorNode::mouseEvent(GLState& _state, QMouseEvent* _event)
// If origin was clicked on
if(element_[Origin].clicked_) {
// translate along screen plane ( unproject to get world coords for translation and apply them )
Vec3d d = _state.project(center());
Vec3d oldvec = _state.unproject(Vec3d(oldPoint2D_[0], (_state.context_height() - oldPoint2D_[1]), d[2]));
Vec3d newvec = _state.unproject(Vec3d(newPoint2D[0], (_state.context_height() - newPoint2D[1]), d[2]));
Vec3d ntrans = newvec - oldvec;
if (mode_ != Resize)
translate(ntrans);
else
{
double positive = -1;
if (newPoint2D[0] - oldPoint2D_[0] + oldPoint2D_[1] - newPoint2D[1] > 0)
positive = 1;
scale( 1.0 + ntrans.norm() * positive);
}
}
// translate along screen plane ( unproject to get world coords for translation and apply them )
Vec3d d = _state.project(center());
Vec3d d_origin = _state.project(draggingOrigin3D_);
// Snap back to origin position if mouse cursor
// is near enough
if (abs(d_origin[0] - newPoint2D[0]) < SNAP_PIXEL_TOLERANCE &&
abs(_state.context_height() - d_origin[1] - newPoint2D[1]) < SNAP_PIXEL_TOLERANCE
&& !(_event->modifiers() & Qt::AltModifier)) {
newPoint2D = oldPoint2D_;
Vec3d backtrans = draggingOrigin3D_ - center();
if (mode_ != Resize) {
translate(backtrans);
}
}
// translate along screen plane ( unproject to get world coords for translation and apply them )
Vec3d oldvec = _state.unproject(Vec3d(oldPoint2D_[0], (_state.context_height() - oldPoint2D_[1]), d[2]));
Vec3d newvec = _state.unproject(Vec3d(newPoint2D[0], (_state.context_height() - newPoint2D[1]), d[2]));
Vec3d ntrans = newvec - oldvec;
if (mode_ != Resize)
translate(ntrans);
else
{
double positive = -1;
if (newPoint2D[0] - oldPoint2D_[0] + oldPoint2D_[1] - newPoint2D[1] > 0)
positive = 1;
scale( 1.0 + ntrans.norm() * positive);
}
}
// x axis clicked apply translation along axis
......@@ -943,6 +971,19 @@ TranslationManipulatorNode::mouseEvent(GLState& _state, QMouseEvent* _event)
// vector as translation
Vec3d d = _state.project(center());
Vec3d d_origin = _state.project(draggingOrigin3D_);
// Snap back to origin position if mouse cursor
// is near enough
if (abs(d_origin[0] - newPoint2D[0]) < SNAP_PIXEL_TOLERANCE &&
abs(_state.context_height() - d_origin[1] - newPoint2D[1]) < SNAP_PIXEL_TOLERANCE
&& !(_event->modifiers() & Qt::AltModifier)) {
newPoint2D = oldPoint2D_;
Vec3d backtrans = draggingOrigin3D_ - center();
if (mode_ != Resize) {
translate(backtrans);
}
}
Vec3d oldvec = _state.unproject(Vec3d(oldPoint2D_[0], (_state.context_height() - oldPoint2D_[1]), d[2]));
Vec3d newvec = _state.unproject(Vec3d(newPoint2D[0], (_state.context_height() - newPoint2D[1]), d[2]));
Vec3d ntrans = newvec - oldvec;
......@@ -992,6 +1033,19 @@ TranslationManipulatorNode::mouseEvent(GLState& _state, QMouseEvent* _event)
// vector as translation
Vec3d d = _state.project(center());
Vec3d d_origin = _state.project(draggingOrigin3D_);
// Snap back to origin position if mouse cursor
// is near enough
if (abs(d_origin[0] - newPoint2D[0]) < SNAP_PIXEL_TOLERANCE &&
abs(_state.context_height() - d_origin[1] - newPoint2D[1]) < SNAP_PIXEL_TOLERANCE
&& !(_event->modifiers() & Qt::AltModifier)) {
newPoint2D = oldPoint2D_;
Vec3d backtrans = draggingOrigin3D_ - center();
if (mode_ != Resize) {
translate(backtrans);
}
}
Vec3d oldvec = _state.unproject(Vec3d(oldPoint2D_[0], (_state.context_height() - oldPoint2D_[1]), d[2]));
Vec3d newvec = _state.unproject(Vec3d(newPoint2D[0], (_state.context_height() - newPoint2D[1]), d[2]));
Vec3d ntrans = newvec - oldvec;
......@@ -1036,6 +1090,19 @@ TranslationManipulatorNode::mouseEvent(GLState& _state, QMouseEvent* _event)
// vector as translation
Vec3d d = _state.project(center());
Vec3d d_origin = _state.project(draggingOrigin3D_);
// Snap back to origin position if mouse cursor
// is near enough
if (abs(d_origin[0] - newPoint2D[0]) < SNAP_PIXEL_TOLERANCE &&
abs(_state.context_height() - d_origin[1] - newPoint2D[1]) < SNAP_PIXEL_TOLERANCE
&& !(_event->modifiers() & Qt::AltModifier)) {
newPoint2D = oldPoint2D_;
Vec3d backtrans = draggingOrigin3D_ - center();
if (mode_ != Resize) {
translate(backtrans);
}
}
Vec3d oldvec = _state.unproject(Vec3d(oldPoint2D_[0], (_state.context_height() - oldPoint2D_[1]), d[2]));
Vec3d newvec = _state.unproject(Vec3d(newPoint2D[0], (_state.context_height() - newPoint2D[1]), d[2]));
Vec3d ntrans = newvec - oldvec;
......
ACG/Scenegraph/TranslationManipulatorNode.hh
View file @ 483e76d7
......@@ -213,7 +213,7 @@ private:
bool hitSphere(GLState& _state, const Vec2i& _v2);
bool hitOuterSphere(GLState& _state, const Vec2i& _v2);
void drawMaipulator (GLState& _state, bool _active);
void drawManipulator (GLState& _state, bool _active);
void drawCircle(const float innerRadius, const float outerRadius);
......@@ -260,6 +260,8 @@ private:
bool ignoreTime_;
Vec2i oldPoint2D_;
Vec3d draggingOrigin3D_;
bool dragging_;
GLMatrixd localTransformation_;
......
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