diff options
| author | Jacopo Mondi <jacopo.mondi@ideasonboard.com> | 2023-10-19 16:01:27 +0200 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart@ideasonboard.com> | 2023-10-23 16:05:59 +0300 |
| commit | b54c935dd764ac3348bcedb9ff67d53a26cfaceb (patch) | |
| tree | ce558e390a37d6a92cde7c77d60f8387f0a4b053 /src/libcamera/camera_sensor.cpp | |
| parent | 250577878bff825516ea5a942aea1b3339acb15c (diff) | |
libcamera: transform: Invert operator*() operands
The current definition of operator*(Transform t1, Transform t0) follows
the function composition notion, where t0 is applied first then t1 is
applied last.
In order to introduce operator*(Orientation, Transform) where a
Transform is applied on top of an Orientation, invert the operand order
of operator*(Transform, Transform) so that usage of operator* with both
Orientation and Transform can be made associative.
For example:
Orientation o;
Transform t = t1 * t2
Orientation o1 = o * t
= o * (t1 * t2) = (o * t1) * t2 = o * t1 * t2
Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com>
Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Diffstat (limited to 'src/libcamera/camera_sensor.cpp')
| -rw-r--r-- | src/libcamera/camera_sensor.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/libcamera/camera_sensor.cpp b/src/libcamera/camera_sensor.cpp index 8ff72b42..521a1997 100644 --- a/src/libcamera/camera_sensor.cpp +++ b/src/libcamera/camera_sensor.cpp @@ -1136,7 +1136,7 @@ Transform CameraSensor::validateTransform(Transform *transform) const * Combine the requested transform to compensate the sensor mounting * rotation. */ - Transform combined = *transform * rotationTransform_; + Transform combined = rotationTransform_ * *transform; /* * We combine the platform and user transform, but must "adjust away" @@ -1165,7 +1165,7 @@ Transform CameraSensor::validateTransform(Transform *transform) const * If the sensor can do no transforms, then combined must be * changed to the identity. The only user transform that gives * rise to this is the inverse of the rotation. (Recall that - * combined = transform * rotationTransform.) + * combined = rotationTransform * transform.) */ *transform = -rotationTransform_; combined = Transform::Identity; |