Watch the tutorial video.
The Simple material node creates a material, which can then be applied to terrain with an Apply material node.
A material is a set of repeating textures (tiles) that can be applied to different places on a terrain according to rules based on elevation and slope. Each layer of a material contains exactly one sub-material. A sub-material contains a set of textures that correspond to a single effect, for example, a rock sub-material or a grass sub-material.
Below is an example of different sub-materials.
A material allows different sub-materials to be combined together using one sub-material per layer.
By default, the material created is composed of four layers:
Below is an example of terrain before and after applying the default material:
To add a Simple material node, right-click in the Graph Editor and select Create Node > Materials > Simple material or press the keyboard shortcut NSMA (Node Simple MAterial).
Double click on the node to open its parameters.
Sub-materials are not installed by default. You need to download them.
If sub-materials are not yet downloaded, the images
in the Simple material parameters window are crossed out:
A window opens to let you choose a sub-material from the list of sub-materials in Instant Terra:
If a sub-material that has not yet been downloaded is selected, the following window appears:
Whichever option you choose, the download starts and a window displays the progress:
Sub-materials already downloaded remain downloaded.
Once a sub-material is selected, its name and a preview image appear in the layer that contains it in the Simple material parameters window.
The Empty button in the Simple material parameters window allows you to remove all layers of the material and start with an empty material. The Default button allows you to return to the default material.
Increase in size:
Decrease in size:
Below is an example of a grass layer with an intensity of 100% (left image) and an intensity of 50% right image), which reveals the previous layer, a layer of rock.
Intensity = 100% Intensity = 50%
If all the layers are partially transparent, the color of the terrain color map will be visible, if it has a color map. Otherwise, the color given by the terrain color ramp is visible.
Once the sub-materials have been chosen, the next step is to determine the places on the terrain where each of the layers will apply. To do this, click on Edit layers in the parameters window.
Instant Terra displays the window for editing the material layers:
The left part of the window is used to define the minimum and maximum altitude of the areas of the terrain on which the material layer will be applied. In the example above,
To modify the parameters of a layer, position the mouse cursor on the lower or upper part of the bar representing the layer. A black dot appears. Click on the black dot and move the mouse up or down while holding the button down. Instant Terra displays the altitude limit, between 0% and 100%.
You can define a transition between the layers by tilting more or less the upper part or the lower part of the rectangle representing the layer:
Example of a sharp transition:
Example of a smooth transition:
By default, the minimum and maximum elevations of the layers are relative to the terrain elevations. 0% corresponds to the lowest altitude point and 100% corresponds to the highest altitude point.
The minimum and maximum altitudes in meters to be used can be defined.
Warning: If certain parts of the terrain are located at an altitude lower than the minimum altitude, or at an altitude higher than the maximum altitude, no material layer can be applied to these parts of the terrain.
The right part of the window is used to determine for each layer the minimum slope and the maximum slope of the zones of the terrain on which the layer will be applied.
The slope varies from 0° (flat terrain) to 90° (vertical cliff).
Editing is done in the same way as for altitudes.
Both criteria are cumulative. For a layer to be applied to part of the terrain, its altitude and its slope must respect the limits defined for this layer. If you want to apply a sub-material if the elevation or slope is within the limits - or apply a sub-material to both the lower and upper part of the terrain - you can create multiple layers that will use the same sub-material.
|Click here to download sub-materials||Downloads the sub-materials to the hard drive.|
|Click here to select a sub-material||Opens the selection of sub-materials for a layer.|
|Download the selected sub-material||Downloads the selected sub-materials to the hard drive.|
|Download all sub-materials||Downloads all sub-materials to the hard drive.|
|Select the sub-materials to download||Opens a window to select the sub-materials to download.|
|Default||Returns to the default material.|
|Empty||Removes all layers of the material and start with an empty material.|
|Show terrain||Displays in the 3D view the terrain on which the material is applied.|
|Show material||Returns to the display of the material.|
|Creates a new layer.|
|Size||Adjusts the size of the sub-material.|
|Intensity||Adjusts the intensity, i.e. the layer opacity.|
|Changes the order of the layers by moving a layer up or down.|
|Disables or enables a layer, which is useful for viewing the effect of a layer.|
|Deletes a layer.|
|Edit layers||Determines the places on the terrain where each of the layers will apply.|
|Use absolute elevations||Uses the absolute altitudes in meters.|
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