How to use only direct light?

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I want to create a viewshed analysis with Blender. Something like this:



enter image description here



I tried it using light in Blender Render and Cycles but I can't get it to work due to the light fall off. I have already set the light bounces to 0.



enter image description here



enter image description here






rendering light







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    up vote
    1
    down vote

    favorite












    I want to create a viewshed analysis with Blender. Something like this:



    enter image description here



    I tried it using light in Blender Render and Cycles but I can't get it to work due to the light fall off. I have already set the light bounces to 0.



    enter image description here



    enter image description here






    rendering light







    share|improve this question

























      up vote
      1
      down vote

      favorite









      up vote
      1
      down vote

      favorite











      I want to create a viewshed analysis with Blender. Something like this:



      enter image description here



      I tried it using light in Blender Render and Cycles but I can't get it to work due to the light fall off. I have already set the light bounces to 0.



      enter image description here



      enter image description here






      rendering light







      share|improve this question















      I want to create a viewshed analysis with Blender. Something like this:



      enter image description here



      I tried it using light in Blender Render and Cycles but I can't get it to work due to the light fall off. I have already set the light bounces to 0.



      enter image description here



      enter image description here






      rendering light




      rendering light






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 1 hour ago









      Robin Betts

      4,3331624




      4,3331624










      asked 1 hour ago









      Vince

      224




      224




















          1 Answer
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          down vote



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          You can do that easier in a compositing step.



          1. Choose whichever renderer.

          2. In the Rendering Tab of the Properties Editor, activate the Shadow Pass.

          The shadow pass hold exactly that information: where light hits and where not. The intensity isn't relevant. It is also antialiased.



          enter code here






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          • This is exactly what I needed, thanks!
            – Vince
            38 mins ago










          Your Answer




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          1 Answer
          1






          active

          oldest

          votes








          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes








          up vote
          3
          down vote



          accepted










          You can do that easier in a compositing step.



          1. Choose whichever renderer.

          2. In the Rendering Tab of the Properties Editor, activate the Shadow Pass.

          The shadow pass hold exactly that information: where light hits and where not. The intensity isn't relevant. It is also antialiased.



          enter code here






          share|improve this answer




















          • This is exactly what I needed, thanks!
            – Vince
            38 mins ago














          up vote
          3
          down vote



          accepted










          You can do that easier in a compositing step.



          1. Choose whichever renderer.

          2. In the Rendering Tab of the Properties Editor, activate the Shadow Pass.

          The shadow pass hold exactly that information: where light hits and where not. The intensity isn't relevant. It is also antialiased.



          enter code here






          share|improve this answer




















          • This is exactly what I needed, thanks!
            – Vince
            38 mins ago












          up vote
          3
          down vote



          accepted







          up vote
          3
          down vote



          accepted






          You can do that easier in a compositing step.



          1. Choose whichever renderer.

          2. In the Rendering Tab of the Properties Editor, activate the Shadow Pass.

          The shadow pass hold exactly that information: where light hits and where not. The intensity isn't relevant. It is also antialiased.



          enter code here






          share|improve this answer












          You can do that easier in a compositing step.



          1. Choose whichever renderer.

          2. In the Rendering Tab of the Properties Editor, activate the Shadow Pass.

          The shadow pass hold exactly that information: where light hits and where not. The intensity isn't relevant. It is also antialiased.



          enter code here







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered 1 hour ago









          Leander

          10.8k11542




          10.8k11542











          • This is exactly what I needed, thanks!
            – Vince
            38 mins ago
















          • This is exactly what I needed, thanks!
            – Vince
            38 mins ago















          This is exactly what I needed, thanks!
          – Vince
          38 mins ago




          This is exactly what I needed, thanks!
          – Vince
          38 mins ago

















           

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