The Lens on the Nokia N9. More...
Public Member Functions |
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| void | setFocus (float, float speed) |
| Set the focus of the lens in diopters. |
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| float | getFocus () const |
| Get the current focus of the lens in diopters. |
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| float | farFocus () const |
| The N9 lens focuses to infinity (zero diopters). |
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| float | nearFocus () const |
| The closest focus distance is ~6.25cm (16.0 diopters) on N9. |
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| bool | focusChanging () const |
| Is the focus currently changing? |
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| float | minFocusSpeed () const |
| The N9's lens has only one speed, which covers its entire focal range in about 1ms. |
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| float | maxFocusSpeed () const |
| The N9's lens has only one speed, which covers its entire focal range in about 1ms. |
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| int | focusLatency () const |
| if I call setFocus, how long will it take before the lens starts moving? |
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| void | setZoom (float, float) |
| The N9's lens is fixed at a focal length of 3.77mm. |
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| float | getZoom () const |
| The N9's lens is fixed at a focal length of 3.77mm. |
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| float | minZoom () const |
| The N9's lens is fixed at a focal length of 3.77mm. |
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| float | maxZoom () const |
| The N9's lens is fixed at a focal length of 3.77mm. |
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| bool | zoomChanging () const |
| The N9's lens is fixed at a focal length of 3.77mm. |
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| float | minZoomSpeed () const |
| The N9's lens is fixed at a focal length of 3.77mm. |
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| float | maxZoomSpeed () const |
| The N9's lens is fixed at a focal length of 3.77mm. |
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| int | zoomLatency () const |
| The N9's lens is fixed at a focal length of 3.77mm. |
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| void | setAperture (float, float) |
| The N9's aperture is fixed at F/2.22. |
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| float | getAperture () const |
| The N9's aperture is fixed at F/2.22. |
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| float | wideAperture (float) const |
| The N9's aperture is fixed at F/2.22. |
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| float | narrowAperture (float) const |
| The N9's aperture is fixed at F/2.22. |
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| bool | apertureChanging () const |
| The N9's aperture is fixed at F/2.22. |
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| int | apertureLatency () const |
| The N9's aperture is fixed at F/2.22. |
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| float | minApertureSpeed () const |
| The N9's aperture is fixed at F/2.22. |
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| float | maxApertureSpeed () const |
| The N9's aperture is fixed at F/2.22. |
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| void | tagFrame (FCam::Frame) |
| Tag a frame with the state of the Lens during that frame. |
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| float | getFocus (Time t) const |
| What was the focus at some time in the past? Uses linear interpolation from known lens positions. |
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The N9 has a lens capable of focus at a fixed speed. However, the zoom and aperture are fixed.
| void FCam::N9::Lens::setFocus | ( | float | , | |
| float | speed | |||
| ) | [virtual] |
Set the focus of the lens in diopters.
See Focus for a discussion of diopters.
The second argument is the focus speed in diopters per second. Numbers less than zero (like the default), get mapped to max speed. This function initiates the change in focus and returns. It may take some time before the focus actually reaches the target position (or as close as it can get). Use FCam::Lens::focusChanging to see if the lens is still moving.
Implements FCam::Lens.
| float FCam::N9::Lens::getFocus | ( | ) | const [virtual] |
Get the current focus of the lens in diopters.
Implements FCam::Lens.
| float FCam::N9::Lens::minFocusSpeed | ( | ) | const [virtual] |
The N9's lens has only one speed, which covers its entire focal range in about 1ms.
You can treat it as instant for most applications.
Implements FCam::Lens.
| float FCam::N9::Lens::maxFocusSpeed | ( | ) | const [virtual] |
The N9's lens has only one speed, which covers its entire focal range in about 1ms.
You can treat it as instant for most applications.
Implements FCam::Lens.
| void FCam::N9::Lens::tagFrame | ( | FCam::Frame | ) | [virtual] |
| float FCam::N9::Lens::getFocus | ( | Time | t | ) | const |
What was the focus at some time in the past? Uses linear interpolation from known lens positions.
| Copyright (c) 2012, Nokia Corporation and/or its subsidiary(-ies). All rights reserved. See Copyright. |
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