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VRay.com - Your source for all things VRay  ::  VRay for SketchUp  ::  Manual  ::  New Features Guide  ::  Lights: Spotlight

VRay for SketchUp New Features

VRay for SketchUp New Features Guide

Lights: Spotlight

Spotlight: V-Ray Spotlight This is a new V-Ray for SketchUp light type that can be used to create a spotlight. The icon is located in the main V-Ray toolbar.

V-Ray Spotlight Parameters

Enable Controls

On: Turns on or off the spotlight.

Shadows: Turn on or off the spotlight shadows.

Affect Diffuse: This determines whether the light is affecting the diffuse properties of the materials.

Affect Specular: This determines whether the light is affecting the specular of the materials.

Area Specular: When this option is Off the particular light will be rendered as a point light in the specular reflections.

Intensity

Color: This parameter determines the color of the light.

Intensity: Determines the intensity of the light.

Units: Allows choosing the light units. The different units are:

Default (scalar): The color and multiplier directly determine the visible color of the light without any conversion. The light surface will appear with the given color in the final image when seen directly by the camera (assuming there is no color mapping involved).

Lumious Power (lm): Total emitted visible light power measured in lumens. When this setting is used, the intensity of the light will not depend on its size. A typical 100W electric bulb emits about 1500 lumens of light.

Luminance (lm/m^2/sr): Visible light surface power measured in lumens per square meter per steradian. When this setting is used, the intensity of the light depends on its size.

Radiant Power (W): Total emitted visible light power measured in watts. When using this setting, the intensity of the light does not depend on its size. Keep in mind that this is not the same as the electric power consumed by a light bulb, for example. A typical 100W light bulb only emits between 2 and 3 watts of visible light.

Radiance (W/m˛/sr): Visible light surface power measured in watts per square meter per steradian. When this setting is used, the intensity of the light depends on its size.

Sampling

Falloff Type: Determines how the light will transition from full strength to no lighting inside the light cone.

Photon Subdivs: This value is used by V-Ray when calculating the Global Photon Map. Lower values mean more noisy results, but will render faster. Higher values produce smoother results but take more time.

Caustic Subdivs: This option controls the amount of photons that V-Ray will trace to estimate caustics (quality of the caustics). Large numbers slow down the calculation of the caustics photon map and may use more memory.

Cutoff Threshold: This parameter specifies a threshold for the light intensity, below which the light will not be computed. Larger values cut away more from the light; lower values make the light range larger. If you specify 0.0, the light will be calculated for all surfaces.

Cone Angle: Allows you to adjust the angle of a light cone. Please see the example below.

V-Ray Spotlight Parameters - Cone Angle 0.2
Cone Angle 0.2
V-Ray Spotlight Parameters - Cone Angle 1.0 (Default)
Cone Angle 1.0 (Default)
V-Ray Spotlight Parameters - Cone Angle 2.0
Cone Angle 2.0

Penumbra Angle: This is the angle from the edge of the spotlight’s beam over which the intensity of the spotlight falls off to zero. Please see the examples below.

V-Ray Spotlight Parameters - Penumbra Angle 0.0 (Default)
Penumbra Angle 0.0 (Default)
V-Ray Spotlight Parameters - Penumbra Angle 0.2
Penumbra Angle 0.2
V-Ray Spotlight Parameters - Penumbra Angle 1.0
Penumbra Angle 1.0
V-Ray Spotlight Parameters - Penumbra Angle 0.0 (Default) example 2
Penumbra Angle 0.0 (Default)
V-Ray Spotlight Parameters - Penumbra Angle 0.2 example 2
Penumbra Angle 0.2
V-Ray Spotlight Parameters - Penumbra Angle 1.0 example 2
Penumbra Angle 1.0

Bumped Below Surface: This is used for cases where the light shines on surfaces with extreme bump mapping. For such surfaces, it is possible that the bump map will turn the surface normal towards the light, even though the light shines on the back of the surface. The light option defines whether such portions of the material will be lit or not.

Shadows

Shadow Color: Determines the color of the shadows.

Shadow Bias: Bias moves the shadow toward or away from the shadow-casting object (or objects). If the Bias value is too low, shadows can "leak" through places they shouldn’t, produce more patterns or make out-of-place dark areas on meshes. If Bias is too high, shadows can "detach" from an object. If the Bias value is too extreme in either direction, shadows might not be rendered at all.

Radius: This is the radius of the light source. If you increase this value you can create softer shadows.

Shadow Subdivs: This value controls the number of samples V-Ray takes to compute lighting (the quality of the shadows).

Decay: Normally, the light intensity is inversely proportional to the square of the distance from the light (surfaces that are farther from the light are darker than surfaces that are closer to the light). The possible types are:

  • Linear: No Decay at all, and light remains at the same intensity. The intensity will not decay with distance.
  • Inverse Decay: An inverse relationship between the intensity of the light and the distance it travels.
  • Inverse Square Decay: Still an inverse relationship, but intensity decreases much more rapidly. This is the physically correct
    decay mode.

Barn Door On: This option enables or disables the barn door effect. Barn doors restrict the light cone on the four sides of the light to produce a rectangular light shape (in the real world, they are four planes attached in a square around the light).

Barn Door Left: Allows you to control the left shutter value.

Barn Door Right: Allows you to control the right shutter value.

Barn Door Top: Allows you to control the top shutter value.

Barn Door Bottom: Allows you to control the bottom shutter value.

V-Ray Spotlight Parameters - barn door effect
This is the kind of light that the barn door effect tries to mimic.

How to use Spotlights:
1. Click on the Spotlight icon to add a V-Ray Spotlight into your scene.
2. Click on the scene to select the location of the light.
3. Right click on the Spotlight, select V-Ray for SketchUp and then "Edit Light" to enter the light options.

Spotlight - Edit Light

4. At this point you can adjust the setting of the Spotlight to get the desired effect. If you are using the Physical Camera you might have to increase the power to make the light visible.

5. Render your scene.

V-Ray Spotlight Render

Tips:

V-Ray Spotlight Tip

 



V-Ray 2.0 for SketchUp

V-Ray 2.0 for SketchUp
 
 
  V-Ray 2.0 for SketchUp Service Pack 1 Now Available
 

V-Ray 2.0 for SketchUp Service Pack 1 is now available for download. A few new features have been added and improvements have been made to many current ones. Also, V-Ray 2.0 for SketchUp now supports SketchUp 2014.

  • With the new Batch Render tool you can now render all SketchUp scene tabs with a single click.
  • V-Ray RT has been optimized for a more interactive experience and focused on a deeper integration with SketchUp.
  • Detailed scenes will be faster and easier to create with further improvements to V-Ray Proxies.
  • Thanks to your feedback, this release includes many bug fixes, including fixes to distributed rendering.
SketchUp 2014 Compatible

 

V-Ray 2.0 for SketchUp Now Available
Rendering by Dario Dubinsky

V-Ray 2.0 for SketchUp is a massive upgrade to V-Ray for SketchUp which includes a series of new feature introductions that enhance visualization workflow and render quality such as V-Ray RT, V-Ray Dome Light and streamlining scene complexity with V-Ray Proxy.

V-Ray 2.0 for SketchUp
Rendering by Dario Dubinsky

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SketchUp is one of the most widely used and easy to learn 3D Modeling software on the market today. With V-Ray for SketchUp, users now have one of the most powerful rendering tools available to visualize their models with the upmost quality and realism. V-Ray works within the SketchUp environment allowing users to be able to efficiently incorporate the task of rendering within their current workflows.

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Monday, March 24, 2014

V-Ray 2.0 for SketchUp now supports SketchUp 2014

V-Ray 2.0 for SketchUp now supports SketchUp 2014

V-Ray 2.0 for SketchUp Service Pack 1 is now available for download. A few new features have been added and improvements have been made to many current ones.

Click here for more information



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