Differential D1561 Diff 5206 manual/physics/smoke/material.rst

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manual/physics/smoke/material.rst

	.. TODO/Review: {{review}} .

	**************			**************
	Smoke Material			Smoke Material
	**************			**************

	Create the Material			Because Blender has two diffeant render engines there are two ways to to create the the materials.
	===================			Eaching having there own coplicated set ups. These are descibed seperatly in the links below:

	Simulating the smoke is easy, however rendering it is not.


	.. figure:: /images/render.jpg
	:width: 300px

	The Render without the correct smoke material.


	Rendering at this point will result in just the big cube (Image, :kbd:`F12`)
	or in a crash (Animation, :kbd:`Ctrl-F12`).

	The material must be a volumetric material with a Density of 0, and a high Density Scale.


	.. figure:: /images/material.jpg
	:width: 300px

	The material settings.


	The first issue can easily be fixed by working on the material and texture of the domain cube.
	Smoke requires a complex material to render correctly. Select the big cube and go to the material tab.
	There change the material to 'Volume' and set the density to 0.
	If you set the density to values bigger than 0 the domain cube will be filled with the volume material.
	The `other settings <http://wiki.blender.org/index.php/User:Broken/VolumeRenderingDev>`__ will affect the smoke,
	though. We'll cover those later.


	.. list-table::

	* - .. figure:: /images/Material_tab.jpg
	:width: 200px

	Go to the material tab

	- .. figure:: /images/Material_volume.jpg
	:width: 200px

	Smoke needs a volume material

	- .. figure:: /images/Density_0.jpg
	:width: 200px

	Density applies to the cube only, so we need to set it to 0


	Add the Texture
	===============

	In addition, Smoke requires its own texture,
	you can use a volumetric texture known as :doc:`Voxel Data </render/blender_render/textures/types/volume/index>`.
	You must remember to set the domain object and change the influence.

	.. figure:: /images/d.jpg
	:width: 300px

	The texture settings.

	Go to the texture tab and change the type to Voxel Data.
	Under the Voxel Data-Settings set the domain object to our domain cube
	(it should be listed just as 'Cube' since we are using Blender's default cube.
	Under Influence check 'Density' and leave it at 1.000
	(Emission should be automatically checked, too).
	Now you should be able to render single frames. You can choose to color your smoke as well,
	by turning Emission Color back on.


	.. tip:: To see the smoke more clearly

	Under the world tab, chose a very dark color for the horizon.


	.. list-table::

	* - .. figure:: /images/Texture_tab.jpg
	:width: 200px

	We need to add a texture of the smoke

	- .. figure:: /images/Texture_type.jpg
	:width: 200px

	Type should be Voxel Data

	- .. figure:: /images/Voxel_domain.jpg
	:width: 200px

	The domain is once again our big cube


	.. list-table::

	* - .. figure:: /images/Influence_density.jpg
	:width: 200px

	Use density as influence

	- .. figure:: /images/Smoke_render.jpg
	:width: 200px

	Finally your first smoke render :)


	.. figure:: /images/render2.jpg
	:width: 550px

	The rendered smoke. It's hard to see, but it's there.


	Extending the Smoke Simulator: Fire!
	====================================

	You can also turn your smoke into fire with another texture! To make fire,
	turn up the Emmision Value in the Materials panel.


	.. figure:: /images/e.jpg
	:width: 300px

	The Fire material.


	Then, add another texture (Keep the old texture or the smoke won't show).
	Give it a fiery color ramp- which colors based on the alpha,
	and change the influence to emission and emission color. Change the blend to Multiply.


	.. figure:: /images/f.jpg
	:width: 300px

	The fire texture settings.


	.. figure:: /images/render3.jpg
	:width: 640px

	The fire render.

				:doc:`Blender Internal </render/blender_render/materials/special_effects/volume>`

				:doc:`Cycles Render </render/cycles/materials/volume>`