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Added osg::Grid shape class, and added an example of its use into the

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hang glide demo.
This commit is contained in:
Robert Osfield
2002-10-31 10:36:11 +00:00
parent 85af8cc4ba
commit 21ee9e4cb7
5 changed files with 176 additions and 20 deletions
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52
include/osg/Shape
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@@ -400,7 +400,6 @@ class HeightField : public Shape
HeightField(const HeightField& mesh,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
Shape(mesh,copyop),
_zeroRotation(true),
_columns(0),
_rows(0),
_origin(0.0f,0.0f,0.0f),
@@ -413,8 +412,6 @@ class HeightField : public Shape
virtual void accept(osg::ShapeVisitor& sv) { sv.apply(*this); }
virtual void accept(osg::ConstShapeVisitor& csv) const { csv.apply(*this); }
virtual void setNumColumnsAndRows(unsigned int col,unsigned int rows) = 0;
inline unsigned int getNumColumns() const { return _columns; }
inline unsigned int getNumRows() const { return _rows; }
@@ -427,18 +424,9 @@ class HeightField : public Shape
inline void setYInterval(float dy) { _dy = dy; }
inline float getYInterval() const { return _dy; }
virtual void setHeight(unsigned int c,unsigned int r) const = 0;
virtual float getHeight(unsigned int c,unsigned int r) const = 0;
virtual void setNormal(unsigned int c,unsigned int r,const osg::Vec3& normal) const = 0;
virtual Vec3 getNormal(unsigned int c,unsigned int r) const = 0;
inline Vec3 getVertex(unsigned int c,unsigned int r) const
{
return Vec3(_origin.x()+_dx*(float)c,
_origin.y()+_dy*(float)r,
_origin.z()+getHeight(c,r));
}
inline void setRotation(const Quat& quat) { _rotation = quat; }
inline const Quat& getRotation() const { return _rotation; }
@@ -448,8 +436,6 @@ class HeightField : public Shape
protected:
~HeightField() {}
bool _zeroRotation;
unsigned int _columns,_rows;
@@ -461,6 +447,44 @@ class HeightField : public Shape
};
class SG_EXPORT Grid : public HeightField
{
public:
Grid();
Grid(const Grid& mesh,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
META_Shape(osg,Grid)
void allocGrid(unsigned int numColumns,unsigned int numRows, float value=0.0f);
void populateGrid(float minValue,float maxValue);
void setHeight(unsigned int c,unsigned int r,float value)
{
_heights[c+r*_columns] = value;
}
virtual float getHeight(unsigned int c,unsigned int r) const
{
return _heights[c+r*_columns];
}
virtual Vec3 getNormal(unsigned int,unsigned int) const
{
return osg::Vec3(0.0f,0.0f,1.0f);
}
protected:
~Grid();
typedef std::vector<float> HeightList;
HeightList _heights;
};
class CompositeShape : public Shape
{
public: