Lighting
Lighting parameters help you specify the appearance of materials by light.
The following parameters are available:
| Parameter | Description | Example |
|---|---|---|
| Ambient | Defines the color of the material when no light touches its surface. |  |
| Diffuse | Defines the way the light is scattered when it touches the surface. Recommendation:
Avoid values higher than 0.7.
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| Specular | Defines the glossy spot of shiny surfaces. |  |
| Glossiness | Defines the brightness area size on the material. |  |
| Reflectivity | Defines the reflectivity of the material. |  |
| Transparency | Defines how much you can see through a material. |  |
| Refraction | Defines the bending of the light through transparent bodies. Note:
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Examples
Below are the values of some examples of materials parameters.
To reproduce wood, specify the following parameters:
| Parameters | Value |
|---|---|
| Ambient | Between 0.7 and 1 |
| Diffuse | ≈1 |
| Specular | If the wood is shiny: ≈1, if not: 0 |
| Reflectivity | 0 |
| Transparency | 0 |
| Refraction | / |
To reproduce building materials (concrete, bricks, plaster), specify the following parameters:
| Parameters | Value |
|---|---|
| Ambient | Between 0.7 and 0.9 |
| Diffuse | ≈1 |
| Specular | 0 |
| Roughness | 0 |
| Reflectivity | 0 |
| Transparency | 0 |
| Refraction | / |
To reproduce transparent materials (glass), specify the following parameters:
| Parameters | Value |
|---|---|
| Ambient | 0 |
| Diffuse | 0 |
| Specular | 1 |
| Roughness | 0 |
| Reflectivity | / |
| Transparency | 1 |
| Refraction | 1.6 |
To reproduce refracting metal materials, specify the following parameters:
| Parameters | Value |
|---|---|
| Ambient | Between 0.2 and 0.4 |
| Diffuse | Between 0.4 and 0.5 |
| Specular | Between 0.3 and 0.9 |
| Roughness | Between 0 and 0.2 |
| Reflectivity | / |
| Transparency | 0 |
| Refraction | 1 |
To reproduce dull metal materials, specify the following parameters:
| Parameters | Value |
|---|---|
| Ambient | Between 0.7 and 1 |
| Diffuse | Between 0.8 and 1 |
| Specular | Between 0.3 and 0.9 |
| Roughness | Between 0 and 0.3 |
| Reflectivity | / |
| Transparency | 0 |
| Refraction | 1 |
To reproduce dark paintings materials, specify the following parameters:
| Parameters | Value |
|---|---|
| Ambient | ≈0.4 |
| Diffuse | ≈0.7 |
| Specular | ≈0.9 |
| Roughness | Between 0 and 0.1 |
| Reflectivity | ≈0.2 |
| Transparency | 0 |
| Refraction | 1 |
To reproduce dull paintings materials, specify the following parameters:
| Parameters | Value |
|---|---|
| Ambient | Between 0.8 and 1 |
| Diffuse | Between 0.9 and 1 |
| Specular | ≈1 |
| Roughness | Between 0 and 0.4 |
| Reflectivity | Between 0.2 and 0.4 |
| Transparency | 0 |
| Refraction | 1 |