Differential D16335 Diff 57149 manual/sculpt_paint/brush/introduction.rst

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manual/sculpt_paint/brush/introduction.rst


	************			************
	Introduction			Introduction
	************			************

	.. figure:: /images/sculpt-paint_brush_introduction_brush-circle.png			.. figure:: /images/sculpt-paint_brush_introduction_brush-circle.png
	:align: center			:align: center

	Brush cursor.			Brush cursor.

				The brush is the main way of interacting with any painting and sculpting mode.
				While click & dragging in the 3D Viewport it will create a :doc:`stroke </sculpt_paint/brush/stroke>`
				and apply an effect depending on various brush settings.

				.. tip::
				It is highly recommended to use a graphics tablet.
				Features like pressure sensitivity only available on tablet devices.
				Using a pen will also give a much better feel for the strokes and
				enable you to achieve more accurate and fast results.
				A pen with two side buttons is also ideal to assign right and middle mouse inputs on them.



	Brush Control			Brush Control
	=============			=============

				These are the most common hotkeys for controlling the brush.

	- Set brush size :kbd:`F`			- Set brush size :kbd:`F`
	- Set brush strength :kbd:`Shift-F`			- Set brush strength :kbd:`Shift-F`
	- Rotate brush texture :kbd:`Ctrl-F`			- Rotate brush texture :kbd:`Ctrl-F`
	- Invert stroke toggle :kbd:`Ctrl`

	You can then either adjust the value interactively or by typing in numbers.			After pressing these hotkeys, you can then either adjust the value interactively or by typing in numbers.
	After pressing the hotkey move the mouse to increase/reduce the value			Move the mouse right or left to increase/reduce the value
	(additionally with precision and/or snapping activated).			(additionally with precision (:kbd:`Shift`) and/or snapping (:kbd:`Ctrl`) activated).
	Finally confirm (:kbd:`LMB`, :kbd:`Return`) or cancel (:kbd:`RMB`, :kbd:`Esc`).			Finally confirm (:kbd:`LMB`, :kbd:`Return`) or cancel (:kbd:`RMB`, :kbd:`Esc`).

				You can also invert the brush direction/effect by holding :kbd:`Ctrl`.
	Selection Masking			No newline at end of file
	=================

	If you have a complex mesh, it is sometimes not easy to paint on all vertices.
	Suppose you only want to paint on a small area of the Mesh and keep the rest untouched.
	This is where "selection masking" comes into play. When this mode is enabled,
	a brush will only paint on the selected vertices or faces.
	The option is available from the header of the 3D Viewport
	(see icons surrounded by the yellow frame):

	.. figure:: /images/sculpt-paint_brush_introduction_select.png

	You can choose between Face Selection masking (left button)
	and Vertex selection masking (right button).

	Selection masking has some advantages over the default paint mode:

	- The original mesh edges are shown, even when modifiers are active.
	- You can select faces to restrict painting to the vertices of the selected faces.


	Details About Selecting
	-----------------------

	The following standard selection operations are supported:

	- :kbd:`RMB` -- Single faces. Use :kbd:`Shift-RMB` to select multiple.
	- :kbd:`A` -- All faces, also to deselect.
	- :kbd:`B` -- Box selection.
	- :kbd:`C` -- Circle select with brush.
	- :kbd:`L` -- Pick linked (under the mouse cursor).
	- :kbd:`Ctrl-L` -- Select linked.
	- :kbd:`Ctrl-I` -- Invert selection Inverse.


	Vertex Selection Masking
	------------------------

	.. reference::

	:Mode: Vertex and Weight Paint Modes
	:Header: :menuselection:`Vertex Selection`
	:Shortcut: :kbd:`V`

	In this mode you can select one or more vertices and then paint only on the selection.
	All unselected vertices are protected from unintentional changes.

	.. figure:: /images/sculpt-paint_brush_introduction_vertex-select.png

	Vertex Selection masking.


	.. _bpy.types.Mesh.use_paint_mask:

	Face Selection Masking
	----------------------

	.. reference::

	:Mode: Texture, Vertex, and Weight Paint Modes
	:Header: :menuselection:`Paint Mask`

	The Face Selection masking allows you to select faces and limit the paint
	tool to those faces, very similar to Vertex selection masking.

	.. figure:: /images/sculpt-paint_brush_introduction_face-select.png

	Face Selection masking.


	Hide/Unhide Faces
	-----------------

	.. figure:: /images/sculpt-paint_brush_introduction_face-select-hidden.png

	Hidden faces.

	You also can hide selected faces as in Edit Mode with the keyboard Shortcut :kbd:`H`,
	then paint on the remaining visible faces and finally unhide the hidden faces again by using
	:kbd:`Alt-H`.


	Hide/Unhide Vertices
	--------------------

	You cannot directly hide selected faces in vertex mask selection mode.
	However, you can use a trick:

	#. First go to Face selection mask mode.
	#. Select the areas you want to hide and then hide the faces (as explained above).
	#. Switch back to Vertex Selection mask mode.

	Now the vertices belonging to the hidden Faces will remain hidden.


	The Clipping Region
	-------------------

	To constrain the paint area further you can use the Clipping Region.
	Press :kbd:`Alt-B` and :kbd:`LMB`-drag a rectangular area.
	The selected area will be "cut out" as the area of interest.
	The rest of the 3D Viewport gets hidden.

	.. figure:: /images/sculpt-paint_brush_introduction_border-select.png

	The Clipping Region is used to select interesting parts for local painting.

	You make the entire mesh visible again by pressing :kbd:`Alt-B` a second time.

	All paint tools that use the view respect this clipping, including box select, and of course brush strokes.