Although cross contour on rectangular surfaces can be useful, the most prevalent form of this technique involves curved contours to describe rounded organic forms. In a sense, you could think of cross contour as the multiple profiles of the form actually drawn onto its skin. By adding this into your cross contour drawing, you are better understanding and showing how an object takes up space.Ĭross contour uses line to map curved or flat surfaces but instead of dealing with the profile of the form, the lines moves within the outer boundaries and it maps the surface facing the viewer. Shadows, of course, represent the way an object takes up space. You can also darken or thicken the lines where there are shadows. This is a simple way for your cross contour drawings to further suggest the three dimensionality of objects. When the pencil approaches the edge of the object, the line should appear to wrap around as it disappears behind the edge of the object. Your pencil should move in response to something that is being observed. There has to be a sense for the terrain of the surface you are describing or it will still appear flat. Vertical and horizontal lines wrap around the shape or surface and they seem to travel over the form so that it appears to have more volume. These lines show how the cross contour concept works. The angle or direction of the line as it moves around the form changes according to the perspective it is viewed at. Ask Dental Care at Cross Pointe if our services are right for you Long teeth Minor chips in the teeth Irregularly shaped teeth Slightly overlapping teeth. The cross contour lines are carried all the way around the form and depending on the subject and its surface, the lines can be curved or straight.
Latitudinal and longitudinal lines on curved surfaces Cross-contour lines are similar to contour lines on a map of rough terrain because they help us visualize the topography of a surface. It is more like a wireframe or grid that has been distorted and stretched by the curves and surface changes of an objects form. It shows topography but it is different from a topographical drawing. The lines that you draw will represent the lines the wire would make on the object. Imagine that the object you are drawing is wrapped in wire.
In more complex forms, cross-contours will be drawn at varying angles. Contours wrap around the surface of a form and conform to the laws of perspective.
Cross contouring series#
Cross contour or surface contour is a series of lines that run horizontally (latitudinally) and vertically (longitudinally) across the terrain of an object.
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