Developer Documentation

PolyLinePlugin_BezierSpline.cc
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42 /*===========================================================================*\
43 * *
44 * $Revision: 17392 $ *
45 * $Author: moebius $ *
46 * $Date: 2013-08-26 15:03:53 +0200 (Mon, 26 Aug 2013) $ *
47 * *
48 \*===========================================================================*/
49
50 //=============================================================================
51 //
52 // CLASS PolyLinePlugin - IMPLEMENTATION
53 //
54 //=============================================================================
55
56
57 //== INCLUDES =================================================================
58
59 #include "PolyLinePlugin.hh"
60
61 ACG::Vec3d
62 PolyLinePlugin::
63 getPointOnMesh(PolyLineBezierSplineData* _SplineData, ACG::Vec3d _point, ACG::Vec3d* _nor)
64 {
65 TriMeshObject* mesh;
66 if(!PluginFunctions::getObject(_SplineData->meshIndex_, mesh))
67 return _point;
68 OpenMeshTriangleBSPT<TriMesh>* bsp = mesh->requestTriangleBsp();
69 OpenMeshTriangleBSPT<TriMesh>::NearestNeighbor neigh = bsp->nearest(_point);
70 ACG::Vec3d nor = mesh->mesh()->normal(neigh.handle);
71 if(_nor)
72 *_nor = nor;
73 OpenMeshTriangleBSPT<TriMesh>::RayCollision rayInt;
74 rayInt = bsp->raycollision(_point, nor);
75 if(rayInt.size())
76 return _point + nor * rayInt[0].second;
77 return _point + nor.normalize() * neigh.dist;
78 }
79
80 void
81 PolyLinePlugin::
82 updatePolyBezierHandles(PolyLineObject* _lineObject, ACG::SceneGraph::LineNode* _line)
83 {
84 PolyLineBezierSplineData* splineData = dynamic_cast<PolyLineBezierSplineData*>(_lineObject->objectData(BEZSPLINE_DATA));
85 if(!splineData)
86 return;
87 _line->clear();
88 for(unsigned int i = 0; i < splineData->handles_.size(); i++) {
89 ACG::SceneGraph::GlutPrimitiveNode* node = 0;
90 if(_lineObject->getAdditionalNode(node, name(), "handle", i))
91 node->set_position(splineData->handles_[i]);
92 const PolyLineBezierSplineData::InterpolatePoint& control = splineData->getInterpolatePoint(i);
93 _line->add_line(control.position, splineData->handles_[i]);
94 _line->add_color(ACG::Vec4f(1,0,0,1));
95 }
96 for(unsigned int i = 0; i < splineData->points_.size(); i++) {
97 ACG::SceneGraph::GlutPrimitiveNode* node = 0;
98 if(_lineObject->getAdditionalNode(node, name(), "control", i))
99 node->set_position(splineData->points_[i].position);
100 }
101 }
102
103 void
104 PolyLinePlugin::
105 updatePolyBezierSpline(PolyLineObject* _lineObject, unsigned int _pointCount)
106 {
107 PolyLineBezierSplineData* splineData = dynamic_cast<PolyLineBezierSplineData*>(_lineObject->objectData(BEZSPLINE_DATA));
108 TriMeshObject* mesh;
109 if(!splineData || !PluginFunctions::getObject(splineData->meshIndex_, mesh)) {
110 return;//no mesh -> do nothing
111 }
112 _lineObject->line()->clear();
113 unsigned int segCount = (splineData->points_.size() + splineData->handles_.size() - 1) / 3;
114 for(unsigned int s = 0; s < segCount; s++) {
115 const ACG::Vec3d a = splineData->points_[s].position, d = splineData->points_[s + 1].position,
116 b = splineData->handles_[s * 2], c = splineData->handles_[s * 2 + 1];
117 //the last segment will get one more point to close the spline
118 unsigned int n = (s != segCount - 1) ? _pointCount : (_pointCount + 1);
119 for(unsigned int i = 0; i < n; i++) {
120 float alpha = float(i) / float(_pointCount);
121 const ACG::Vec3d e = a + (b - a) * alpha, f = c + (d - c) * alpha;
122 ACG::Vec3d g = e + (f - e) * alpha;
123 g = getPointOnMesh(splineData, g);
124 _lineObject->line()->add_point(g);
125 }
126 }
127 emit updatedObject(_lineObject->id(), UPDATE_GEOMETRY | UPDATE_TOPOLOGY);
128 }
PolyLinePlugin::getPointOnMesh
ACG::Vec3d getPointOnMesh(PolyLineBezierSplineData *_SplineData, ACG::Vec3d _point, ACG::Vec3d *_nor=0)
Returns the nearest point on the mesh or if none could be found the input.
Definition: PolyLinePlugin_BezierSpline.cc:63
UPDATE_GEOMETRY
const UpdateType UPDATE_GEOMETRY(UpdateTypeSet(1)<< 2)
Geometry updated.
MeshObject::requestTriangleBsp
OMTriangleBSP * requestTriangleBsp()
Definition: MeshObjectT_impl.hh:763
BaseObjectData::getAdditionalNode
bool getAdditionalNode(NodeT *&_node, QString _pluginName, QString _nodeName, int _id=0)
get an addition node from the object
Definition: BaseObjectDataT_impl.hh:84
ACG::SceneGraph::GlutPrimitiveNode
Definition: GlutPrimitiveNode.hh:82
PolyLinePlugin::updatePolyBezierSpline
void updatePolyBezierSpline(PolyLineObject *_lineObject, unsigned int _pointsPerSegment)
Generates points for the spline, updates handles.
Definition: PolyLinePlugin_BezierSpline.cc:105
ACG::PolyLineT::add_point
void add_point(const Point &_p)
Append a point to the polyline.
Definition: PolyLineT_impl.hh:283
ACG::SceneGraph::LineNode::add_line
void add_line(const Vec3d &_v0, const Vec3d &_v1)
add line (for LineMode == LineSegmentsMode)
Definition: LineNode.cc:151
PluginFunctions::getObject
bool getObject(const int _identifier, BaseObject *&_object)
Get the object which has the given identifier.
Definition: PluginFunctions.cc:296
PolyLineBezierSplineData::meshIndex_
size_t meshIndex_
Index of the corresponding mesh.
Definition: PolyLineBezierSplineData.hh:66
BSPImplT< TriangleBSPCoreT< OpenMeshTriangleBSPTraits< Mesh > > >::RayCollision
std::vector< std::pair< Handle, Scalar > > RayCollision
Store nearest neighbor information.
Definition: BSPImplT.hh:95
ACG::SceneGraph::LineNode::clear
void clear()
clear points/lines and colors
Definition: LineNode.cc:101
OpenMesh::VectorT
Definition: Vector11T.hh:83
ACG::SceneGraph::LineNode
Definition: LineNode.hh:84
BSPImplT< TriangleBSPCoreT< OpenMeshTriangleBSPTraits< Mesh > > >::raycollision
RayCollision raycollision(const Point &_p, const Point &_r) const
intersect mesh with ray
Definition: BSPImplT_impl.hh:127
PolyLineObject
Definition: PolyLineObject.hh:76
TriangleBSPCoreT< OpenMeshTriangleBSPTraits< Mesh > >::size
size_t size()
Definition: TriangleBSPCoreT.hh:107
BaseObject::id
int id() const
Definition: BaseObject.cc:190
MeshObject::mesh
MeshT * mesh()
return a pointer to the mesh
Definition: MeshObjectT_impl.hh:350
ACG::SceneGraph::GlutPrimitiveNode::set_position
void set_position(const Vec3d &_p, int _idx=0)
set position
Definition: GlutPrimitiveNode.cc:102
PolyLineBezierSplineData::getInterpolatePoint
InterpolatePoint & getInterpolatePoint(unsigned int _handleIndex)
Retrieves the interpolate point based on the handle.
Definition: PolyLineBezierSplineData.cc:105
TriMeshObject
Type for a MeshObject containing a triangle mesh.
Definition: TriangleMesh.hh:67
PolyLineBezierSplineData::InterpolatePoint
Definition: PolyLineBezierSplineData.hh:58
PolyLineObject::line
PolyLine * line()
return a pointer to the line
Definition: PolyLineObject.cc:199
PolyLinePlugin::updatePolyBezierHandles
void updatePolyBezierHandles(PolyLineObject *_lineObject, ACG::SceneGraph::LineNode *_line)
Updates all the handles on the PolyBezier.
Definition: PolyLinePlugin_BezierSpline.cc:82
BSPImplT< TriangleBSPCoreT< OpenMeshTriangleBSPTraits< Mesh > > >::nearest
NearestNeighbor nearest(const Point &_p) const
Return handle of the nearest neighbor face.
Definition: BSPImplT_impl.hh:68
PolyLinePlugin::name
QString name()
Name of the Plugin.
Definition: PolyLinePlugin.hh:207
UPDATE_TOPOLOGY
const UpdateType UPDATE_TOPOLOGY(UpdateTypeSet(1)<< 3)
Topology updated.
BaseObject::objectData
PerObjectData * objectData(QString _dataName)
Returns the object data pointer.
Definition: BaseObject.cc:803
ACG::PolyLineT::clear
void clear()
Clear the current polyline.
Definition: PolyLineT_impl.hh:182
ACG::SceneGraph::LineNode::add_color
void add_color(const ACG::Vec3uc &_c)
add color (only for LineMode == LineSegmentsMode)
Definition: LineNode.cc:162
OpenMesh::VectorT::normalize
auto normalize() -> decltype(*this/=std::declval< VectorT< S, DIM >>().norm())
Definition: Vector11T.hh:434
PolyLineBezierSplineData
Definition: PolyLineBezierSplineData.hh:53
OpenMeshTriangleBSPT
Definition: TriangleBSPT.hh:211