Assembly 10.6 [SketchUp to Photoshop (Plans)]


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A135 Lecture 26: SketchUp/Photoshop (Plans) from Grant Adams on Vimeo.

Note:  The following tutorial is in progress and not finished/polished.  I’ve posted the raw images/text to help with your exercises.  Please see the video for more information.

  1. Create a plan view in SketchUp by using the section plane tool.
    • Note:  If you don’t see the section plane tool, navigate to View>Toolbars>Large Tool Set.
  2. Follow SketchUp 4.7 [topo lines] to create topography lines for your model (optional).
  3. Follow SketchUp 4.4 [Styles for Photoshop] to create several exported versions of your plan view.
  4. Make sure to have an exterior shadow view (turn off the section cut, then export) and an interior shadow view (shadows with the section cut on).
  5. Open Adobe Photoshop and navigate to File>Open.  Choose your base image from SketchUp and select “Ok.”
  6. Use File>Place… to bring in each additional SketchUp export.  After each place, change the layer blending mode to be “Multiply.”  Your image should look similar to the image below.Plan_01
  7. With only the base drawing and the exterior shadow layers turned on, use the marquee selection tool (or other appropriate selection tool) to select each hole in the exterior shadow (there are likely places where shadows don’t exist and should, this step is to correct them).  With the selections made, use the eyedropper tool to sample the shadow color.  Now use the paint brush tool to paint in the missing shadow pieces.  The before and after images are shown below. [premium content]
  8. With the exterior shadows turned off (and the base drawing still on), turn on the interior shadow layer.  With the base layer selected, use the magic wand tool and click outside of your plan.  Change the selected layer to be the interior shadow layer and press the delete key on the keyboard. Your exterior shadows should disappear.  The before and after images are shown below.[premium content]
  9. Use http://search.creativecommons.org to find aerial photography of a site similar to your site.  Save the image(s) to the resources folder on your flash drive.  Use File>Place to insert the site imagery into your Photoshop document.
  10. With the base layer selected, use the magic wand tool to select outside of your floor plan.  Navigate to Select>Inverse.  Click on the layer with your background imagery.  Now click on the Add Layer Mask button to mask off the building from the background imagery.  Your resulting image should look like the image below.[premium content]
  11. The background imagery is a bit strong for the final project.  Navigate to Layer>New Adjustment Layer and choose Hue/Saturation…  Adjust the saturation value and the lightness value to what “feels” appropriate.  Now move the adjustment layer directly above the background imagery layer and press ctrl+alt+g (cmd+option+g on a mac) to apply the adjustment layer only to the layer directly below it (you will see a small arrow appear before the layer name indicating it applies only to the layer below it).  Your image should look similar to the image below.[premium content]
  12. Navigate to New>Layer.  Change the blending mode to be “Overlay” and check the box for “Fill with neutral 50% grey.” Now use the burn tool to add shadow to the background imagery to match the topography.  The image should be similar to the one shown below.
    • Note:  You should look at the lighting source to determine where the shadows should be placed.  In the image below, the topography lines indicate there is a valley behind the house.  I’ve shadowed the slopes of this valley using the burn tool to make the flat background image appear to fit the site context for this 3D model.[premium content]
  13. Click on the contour lines layer and then navigate to Image>Adjustments>Invert.  Now change the layer blending mode to “Screen”  Your contour lines should switch from white to black (shown below). [premium content]
  14. To remove the contour lines from the water, create a layer mask on the contour lines layer using the “Add Layer Mask” button at the bottom of the Layers window.  Now with the layer mask selected, use the gradient tool (often under the paint bucket tool) with the foreground color as white and the background color as white, click and drag a line from where you would like the contours to start disappearing to where they are completely invisible.  This may take several tries to get correct.  The contour lines are also a bit light.  To correct this, right click on the contour lines layer and select “Duplicate Layer” from the context menu that appears.  The result should be similar to the image shown below.[premium content]
  15. In order to ground the building into the site, add a pathway to the building.  Find an image with the path ground texture (in the image below it is sand) and use File>Place to insert the image into the scene.  Move the layer to be directly above the background imagery layer but below the dodge and burn layer.  You will see an arrow appear indicating the path layer applies to the background image only.  Use the lasso tool to select the walking path.  With the path selected, click on the “Add Layer Mask” button to let the path show through the background imagery.  Your image should look similar to the image shown below.[premium content]
  16. Select the layer mask for the walking path layer and use a white brush with 0% hardness to blur the edge of the path (so that it is not a sharp edge).  Now change to the dodge & burn layer and burn the edge of the path to add subtle shadow to the path (this makes the path look sunk in to the ground compared with the surrounding greenery (plants).  Your path should look similar to the one below.[premium content]
  17. With everything complete and layers turned on, the final image is below.Plan_09

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