Often, in the process of carving in relief, it is desired to texture the depiction of buildings. Drawing reference lines can help in determing the shape and the alignment of singles, siding, windows, doors etc. In a perspective drawing, parallel lines are drawn to meet in a vanishing point. There are three different types of perspective drawings, namely one point, two point and three point perspective.
One can use a long straight edge and experimentally determine where the vanishing points are. By rotating the straight edge about the vanishing point, reference lines can be established for the carving.
Another way of determining reference lines is as follows. Let's say that it is desired to draw lines on the roof of a building indicating shingles or roofing.
- Lay a ruler along edge of the roof and rotate the ruler until some convienent number of steps aligns with the peak of the roof and the edge as in step 1. In the example shown a scale ruler was used but any convienent ruler will do. The steps can be in 1/16's or 1/8's or even in millimeters. Step one shows the scale with 0 at the edge of the roof and 19 at the peak with steps of 3/32 inches per step.
- At every division place a dot where it is desired to have a reference line.
- Go to the opposite end of the roof and do the same thing. The ruler will have to rotated slightly because one side will be smaller (or larger) than the first side. Line up the same divisions as before (0 and 19 in this case) and mark with a dot.
- Connect the corresponding dots creating a series of reference lines.
The reference lines can now be uses as a guide to carve or burn detail into the relief carving.
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