Page 298 - Enhancing CAD Drawings with Photoshop
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4386.book  Page 282  Monday, November 15, 2004  3:27 PM

      282  CHAPTER 8  ILLUSTRATING ARCHITECTURE



                      10. Change Opacity to 50%, and paint again with lighter strokes. Press X, and then make white
                          brush strokes to effectively remove paint from the layer (see Figure 8.30).

                  Figure 8.30
                  Painting another
                  masked layer










                          In general, start by painting at 100% opacity and 50% flow. Then, decrease opacity to paint in
                          lighter shades of the same hue. If you go too far and build up too much paint on the layer so
                          that it looks like a flat color, paint in white to remove color from the masked layer. For more
                          variation, change the brush size and hardness by pressing the left and right square bracket
                          keys in combination with the Shift key.
                    TIP  Select a different preset brush shape or design your own in the Brushes palette for very different
                       looking strokes.
                          Digital painting is really an art form that takes practice to perfect. There is no “right way” to
                          paint; you are free to experiment and find a methodology that works for the look you desire.
                          All your masked layers ensure that you will never “paint outside the lines.” However, if you
                          want paint to spill out beyond its masked border, just click the layer mask thumbnail and paint
                          in white to increase the borders within which you can paint.
                      11. Continue painting each prepared masked layer, repeating steps 8 through 10 for each one. Use
                          the colors available in the Swatches palette, and vary your painting technique to avoid areas
                          of flat color where too much paint can build up. Figure 8.31 shows one possible result. Your
                          results will be different because it is impossible to exactly duplicate the nuances of brush strokes.

                    Using Layer Style Effects
                    As you learned in Chapter 5, “Presenting Plans,” Chapter 6, “Elevating the Elevation,” and Chapter 7,
                    layer style effects are a powerful way to add character to your compositions. Illustrations can also
                    benefit from judicious use of these effects. Let’s add texture and shading to the ground plane using
                    pattern and gradient overlays.
                       1. Press Ctrl+5 to switch to the ObjectID channel. Use the Magic Wand to make a selection; press
                          W and use a Tolerance of 20, with Anti-Aliased and Contiguous checked. Click in the ground
                          area in front of the building.
                       2. Press Shift+F12 to prepare this selection as a masked layer with your action recorded in the
                          Masking With Channels section.
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