FGFS-4.1/OpenSceneGraph
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

From Ruben Lopez, updates to VRML/IV loader.

Browse Source 
From Ben Discoe, corrections to comments in osg::Transform

From Alberto Barbati, Lazy evaluation of inverse matrix in osg::MatrixTransfrom
This commit is contained in:
Robert Osfield
2002-08-04 20:34:48 +00:00
parent fb0d87b29c
commit cab49a9307
8 changed files with 101 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files

40
include/osg/MatrixTransform
View File

@@ -28,17 +28,28 @@ class SG_EXPORT MatrixTransform : public Transform
META_Node(osg, MatrixTransform);
/** Set the transform's matrix.*/
void setMatrix(const Matrix& mat) { (*_matrix) = mat; _inverseDirty=true; computeInverse(); dirtyBound(); }
void setMatrix(const Matrix& mat) { (*_matrix) = mat; _inverseDirty=true; dirtyBound(); }
/** Get the transform's matrix. */
/** Get the matrix. */
inline const Matrix& getMatrix() const { return *_matrix; }
/** preMult transform.*/
void preMult(const Matrix& mat) { _matrix->preMult(mat); _inverseDirty=true; computeInverse(); dirtyBound(); }
/** pre multiply the transforms matrix.*/
void preMult(const Matrix& mat) { _matrix->preMult(mat); _inverseDirty=true; dirtyBound(); }
/** postMult transform.*/
void postMult(const Matrix& mat) { _matrix->postMult(mat); _inverseDirty=true; computeInverse(); dirtyBound(); }
/** post multiply the transforms matrix.*/
void postMult(const Matrix& mat) { _matrix->postMult(mat); _inverseDirty=true; dirtyBound(); }
/** Get the inverse matrix. */
inline const Matrix& getInverseMatrix() const
{
if (_inverseDirty)
{
_inverse->invert(*_matrix);
_inverseDirty = false;
}
return *_inverse;
}
virtual const bool computeLocalToWorldMatrix(Matrix& matrix,NodeVisitor*) const
{
if (_referenceFrame==RELATIVE_TO_PARENTS)
@@ -54,13 +65,15 @@ class SG_EXPORT MatrixTransform : public Transform
virtual const bool computeWorldToLocalMatrix(Matrix& matrix,NodeVisitor*) const
{
const Matrix& inverse = getInverseMatrix();
if (_referenceFrame==RELATIVE_TO_PARENTS)
{
matrix.postMult(*_inverse);
matrix.postMult(inverse);
}
else // absolute
{
matrix = *_inverse;
matrix = inverse;
}
return true;
}
@@ -69,18 +82,9 @@ class SG_EXPORT MatrixTransform : public Transform
virtual ~MatrixTransform();
inline void computeInverse() const
{
if (_inverseDirty)
{
_inverse->invert(*_matrix);
_inverseDirty = false;
}
}
ref_ptr<Matrix> _matrix;
mutable ref_ptr<Matrix> _inverse;
mutable bool _inverseDirty;
mutable bool _inverseDirty;
};