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Merge-request: 756
Reviewed-by: Olivier Goffart <olivier.goffart@nokia.com>
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Marking these types are movable allows container classes
to optimize for their unique properties.
Reviewed-by: Sarah Smith
Reviewed-by: Daniel Pope
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Reviewed-by: Trust Me
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Reviewed-by: Sarah Smith
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Reviewed-by: Sarah Smith
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Previous code was creating a full 3D rotation matrix and then
projecting back to 2D. This change combines the two steps into
one to avoid calculating matrix components that will be dropped.
Reviewed-by: Sarah Smith
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Change 100afe8d fixed a bug in QGraphicsRotation related to when
the "distance to plane" projection needed to be performed. As a
side effect it made the toTransform() API not do the expected
thing when the function is called with no argument.
This change makes the default no-argument version of toTransform()
do the simple "drop row 3 and column 3" orthographic transformation
that normal users of the class expect, and adds a new overload for
the "distance to plane" projection case for the special case.
Reviewed-by: trustme
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Reviewed-by: Olivier
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It is useful to be able to map direction vectors by the top-left
3x3 component of a 4x4 matrix, ignoring the translation and
projection components.
Reviewed-by: Sarah Smith
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Reviewed-by: Trust Me
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Some concerns were expressed about the float precision of QMatrix4x4,
which this change addresses by using qreal instead.
The QVector2D/3D/4D classes still use float internally, so that they
can be used directly in large arrays of vertex values to be uploaded
to an OpenGL server.
QQuaternion is a client-side class, and it should produce rotations
that are consistent with QMatrix4x4. So its precision was changed too.
A consequence of this change is that the following no longer works
in a portable fashion:
QMatrix4x4 mat;
...
glLoadMatrixf(mat.constData());
The caller must now repack the argument to convert from qreal to GLfloat.
Reviewed-by: Michael Goddard
Reviewed-by: Andreas
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Reviewed-by: Trust Me
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Existing QVariant-capable classes in QtGui like QColor, QPixmap,
etc have "operator QVariant()". This change adds the same operators
for QVector2D, QVector3D, QVector4D, QQuaternion, and QMatrix4x4.
Reviewed-by: Justin McPherson
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When converting from 3D back to 2D, it is necessary to project
the z component unless an orthographic projection is desired.
This change adds a distanceToPlane argument that specifies the
perspective projection factor to apply during the conversion.
The default value of 1024 corresponds to the projection performed
by QTransform::rotate(), for consistency with existing classes.
Reviewed-by: trustme
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Reviewed-by: Trust Me
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Reviewed-by: Sarah Smith
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Reviewed-by: Trust Me
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The MODULE placeholder shouldn't be used anymore, and neither should the
old Trolltech license header.
Reviewed-by: Trust Me
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Use the matrix "flagBits" to short-cut transformations when the
matrix type is identity/translate/scale.
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The main use case for fixed-point support is to build large
arrays of vertices. This can be handled using qvertextype or
something similar at higher levels. So it isn't worth risking
numerical instability in the core classes.
Reviewed-by: trustme
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These sources had the old headers. Update to the new LGPL ones.
Reviewed-by: TrustMe
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