openscenegraph
Scale1DDragger
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1/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
2 *
3 * This library is open source and may be redistributed and/or modified under
4 * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
5 * (at your option) any later version. The full license is in LICENSE file
6 * included with this distribution, and on the openscenegraph.org website.
7 *
8 * This library is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * OpenSceneGraph Public License for more details.
12*/
13//osgManipulator - Copyright (C) 2007 Fugro-Jason B.V.
14
15#ifndef OSGMANIPULATOR_SCALE1DDRAGGER
16#define OSGMANIPULATOR_SCALE1DDRAGGER 1
17
18#include <osgManipulator/Dragger>
19#include <osgManipulator/Projector>
20
21namespace osgManipulator {
22
23/**
24 * Dragger for performing 1D scaling.
25 */
26class OSGMANIPULATOR_EXPORT Scale1DDragger : public Dragger
27{
28 public:
29
30 enum ScaleMode
31 {
32 SCALE_WITH_ORIGIN_AS_PIVOT = 0,
33 SCALE_WITH_OPPOSITE_HANDLE_AS_PIVOT
34 };
35
36 Scale1DDragger(ScaleMode scaleMode=SCALE_WITH_ORIGIN_AS_PIVOT);
37
38 META_OSGMANIPULATOR_Object(osgManipulator,Scale1DDragger)
39
40 /**
41 * Handle pick events on dragger and generate TranslateInLine commands.
42 */
43 virtual bool handle(const PointerInfo& pi, const osgGA::GUIEventAdapter& ea, osgGA::GUIActionAdapter& us);
44
45 /** Setup default geometry for dragger. */
46 void setupDefaultGeometry();
47
48 /** Set/Get min scale for dragger. */
49 inline void setMinScale(double min) { _minScale = min; }
50 inline double getMinScale() const { return _minScale; }
51
52 /** Set/Get color for dragger. */
53 inline void setColor(const osg::Vec4& color) { _color = color; setMaterialColor(_color,*this); }
54 inline const osg::Vec4& getColor() const { return _color; }
55
56 /**
57 * Set/Get pick color for dragger. Pick color is color of the dragger
58 * when picked. It gives a visual feedback to show that the dragger has
59 * been picked.
60 */
61 inline void setPickColor(const osg::Vec4& color) { _pickColor = color; }
62 inline const osg::Vec4& getPickColor() const { return _pickColor; }
63
64 /** Set/Get left and right handle nodes for dragger. */
65 inline void setLeftHandleNode (osg::Node& node) { _leftHandleNode = &node; }
66 inline void setRightHandleNode(osg::Node& node) { _rightHandleNode = &node; }
67 inline osg::Node* getLeftHandleNode() { return _leftHandleNode.get(); }
68 inline const osg::Node* getLeftHandleNode() const { return _leftHandleNode.get(); }
69 inline osg::Node* getRightHandleNode() { return _rightHandleNode.get(); }
70 inline const osg::Node* getRightHandleNode() const { return _rightHandleNode.get(); }
71
72 /** Set left/right handle position. */
73 inline void setLeftHandlePosition(double pos) { _projector->getLineStart() = osg::Vec3d(pos,0.0,0.0); }
74 inline double getLeftHandlePosition() const { return _projector->getLineStart()[0]; }
75 inline void setRightHandlePosition(double pos) { _projector->getLineEnd() = osg::Vec3d(pos,0.0,0.0); }
76 inline double getRightHandlePosition() const { return _projector->getLineEnd()[0]; }
77
78 protected:
79
80 virtual ~Scale1DDragger();
81
82 osg::ref_ptr< LineProjector > _projector;
83 osg::Vec3d _startProjectedPoint;
84 double _scaleCenter;
85 double _minScale;
86
87 osg::ref_ptr< osg::Node > _leftHandleNode;
88 osg::ref_ptr< osg::Node > _rightHandleNode;
89
90 osg::Vec4 _color;
91 osg::Vec4 _pickColor;
92
93 ScaleMode _scaleMode;
94};
95
96
97}
98
99#endif