.. _layer_blur: ######################## Blur Layer ######################## .. figure:: blur_dat/Layer_blur_blur_icon.png :alt: Layer_blur_blur_icon.png :width: 64px .. _layer_blur About Blur Layer: About Blur Layer ---------------- Blur is a graphical effect that aims to imitate an unfocused image. In a photography context blur can occur when the `focal point `__ of the lens is not at the right position of the target of the photograph. Also blur can have other origins. Blurs can happen as the result of a poor exposure during its recording (too long exposure time for a large movement of the object or a high movement of the recorder). Also blurring occurs when you use a very wide `aperture `__ (f4). In that case the objects that are out of focus are very blurred compared to the situation where the aperture is fully closed (f22). In a graphical context, blurs are effects that imitate those situations (with more or less success). .. _layer_blur Parameters of the Blur Layer: Parameters of the Blur Layer ---------------------------- The parameters of the ``Blur Layer`` are: +---------------------------------------------------------+-------------------------+------------------------------------------------+ | **Name** | **Value** | **Type** | +---------------------------------------------------------+-------------------------+------------------------------------------------+ | |Type_real_icon.png| |Z_Depth_Parameter| | 0.000000 | real | +---------------------------------------------------------+-------------------------+------------------------------------------------+ | |Type_real_icon.png| |Amount_Parameter| | 1.000000 | real | +---------------------------------------------------------+-------------------------+------------------------------------------------+ | |Type_integer_icon.png| |Blend_Method| | Composite | integer | +---------------------------------------------------------+-------------------------+------------------------------------------------+ | |Type_vector_icon.png| :ref:`Size ` | 6.000000pt,6.000000pt | vector | +---------------------------------------------------------+-------------------------+------------------------------------------------+ | |Type_integer_icon.png| :ref:`Type ` | Fast Gaussian Blur | integer | +---------------------------------------------------------+-------------------------+------------------------------------------------+ .. |Type_real_icon.png| image:: images/Type_real_icon.png :width: 16px .. |Type_integer_icon.png| image:: images/Type_integer_icon.png :width: 16px .. |Type_vector_icon.png| image:: images/Type_vector_icon.png :width: 16px .. _layer_blur Size: Size ~~~~ The ``Size`` parameter controls the size of the blur. Depending on that value the blur can have different effects. Note that rendering time quickly increases as you increase the size parameter, so be careful. This parameter is a compound value of two real numbers, x and y. Each of them indicates the size of the blur along that direction. .. _layer_blur Type: Type ~~~~ There are 5 types of blur: - :ref:`Fast Gaussian Blur ` - :ref:`Box Blur ` (`More info `__) - :ref:`Cross Hatch Blur ` - :ref:`Disc Blur ` - :ref:`Gaussian Blur ` (`More info `__) .. _layer_blur Samples: Samples ------- .. _layer_blur Star animation: Star animation ~~~~~~~~~~~~~~ If you wonder how the animations were made (`sample file `__): - a |Star_Layer| is positioned at the center of the Frame, with an |Outline_Layer| of width 0.05u - the animations have 120 frames, and the `Size <#Size>`__ parameter of the blur goes from 0u,0u to 1u,1u - the |Render_dialog| settings are set to Quality 9 and Anti-Aliasing 1 Fast Gaussian : |Fast Gaussian| Box : |Box| Cross Hatch : |Cross Hatch| Disc : |Disc| Gaussian : |Gaussian| .. |Fast Gaussian| image:: blur_dat/Blur_fast_gaussian.gif .. |Box| image:: blur_dat/Blur_box.gif .. |Cross Hatch| image:: blur_dat/Blur_cross_hatch.gif .. |Disc| image:: blur_dat/Blur_disc.gif .. |Gaussian| image:: blur_dat/Blur_gaussian.gif .. _layer_blur Fast Gaussian: Fast Gaussian ~~~~~~~~~~~~~ .. _layer_blur Fast Gaussian Blur: Fast Gaussian Blur ~~~~~~~~~~~~~~~~~~ +----------------------------------------------+-----------------------------------------------+ | **Fast Gaussian Blur** | | +----------------------------------------------+-----------------------------------------------+ | .. figure:: blur_dat/BlursFastGaussian.png | .. figure:: blur_dat/Blurs2FastGaussian.png | | :alt: blur_dat/BlursFastGaussian.png | :alt: blur_dat/Blurs2FastGaussian.png | | | | | | | +----------------------------------------------+-----------------------------------------------+ .. _layer_blur Box: Box ~~~ +------------------------------------+--------------------------------------+ | **Box Blur** | | +------------------------------------+--------------------------------------+ | .. figure:: blur_dat/BlurBox.png | .. figure:: blur_dat/Blurs2Box.png | | :alt: blur_dat/BlurBox.png | :alt: blur_dat/Blurs2Box.png | | | | | | | +------------------------------------+--------------------------------------+ .. _layer_blur Cross Hatch: Cross Hatch ~~~~~~~~~~~ +-------------------------------------------+---------------------------------------------+ | **Cross Hatch Blur** | | +-------------------------------------------+---------------------------------------------+ | .. figure:: blur_dat/BlurCrossHatch.png | .. figure:: blur_dat/Blurs2CrossHatch.png | | :alt: blur_dat/BlurCrossHatch.png | :alt: blur_dat/Blurs2CrossHatch.png | | | | | | | +-------------------------------------------+---------------------------------------------+ .. _layer_blur Disc: Disc ~~~~ +-------------------------------------+---------------------------------------+ | **Disc Blur** | | +-------------------------------------+---------------------------------------+ | .. figure:: blur_dat/BlurDisc.png | .. figure:: blur_dat/Blurs2Disc.png | | :alt: blur_dat/BlurDisc.png | :alt: blur_dat/Blurs2Disc.png | | | | | | | +-------------------------------------+---------------------------------------+ .. _layer_blur Gaussian: Gaussian ~~~~~~~~ +-----------------------------------------+-------------------------------------------+ | **Gaussian Blur** | | +-----------------------------------------+-------------------------------------------+ | .. figure:: blur_dat/BlurGaussian.png | .. figure:: blur_dat/Blurs2Gaussian.png | | :alt: blur_dat/BlurGaussian.png | :alt: blur_dat/Blurs2Gaussian.png | | | | | | | +-----------------------------------------+-------------------------------------------+ .. _layer_blur Fast Gaussian Blur over all the layers: Fast Gaussian Blur over all the layers ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +----------------------------------------------+ | **Fast Gaussian Blur over all the layers** | +----------------------------------------------+ | .. figure:: blur_dat/Blur.png | | :alt: blur_dat/Blur.png | | | | | +----------------------------------------------+ .. _layer_blur See also: See also -------- - |Radial_Blur_Layer| with a radial control of the size of the blur. - |Motion_Blur_Layer| a type of blur that aims to simulate a motion blur (the one that happens when the object's movement is too fast for the exposure time). It is controlled by a single parameter called “Aperture”. .. |Z_Depth_Parameter| replace:: :ref:`Z Depth Parameter ` .. |Amount_Parameter| replace:: :ref:`Opacity ` .. |Blend_Method| replace:: :ref:`Blend Method ` .. |Star_Layer| replace:: :ref:`Star Layer ` .. |Outline_Layer| replace:: :ref:`Outline Layer ` .. |Render_dialog| replace:: :ref:`Render Dialog ` .. |Radial_Blur_Layer| replace:: :ref:`Radial Blur Layer ` .. |Motion_Blur_Layer| replace:: :ref:`Motion Blur Layer `