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Circles and Curves in Perspective

From DT Online


Description

In most drawing methods, including perspective, circles and curves have to be constructed by plotting points using straight lines then sketching through them.


1ptCircle.png
2ptCircle.png


Circles and arcs are drawn in perspective by first using normal projection methods to plot the imaginary square or rectangle that would surround them and then sketching the curve inside it.


1ptCircle2.png
2ptCircle2.png


To help sketch the circle accurately, its centre can be found by drawing the diagonals of the bounding square. Also the points where the circle touches each side of the (perspective) square can be found by projecting from the centre to the Vanishing Points


Note: The Major Axis of the Ellipse is always at right angles to the axis of the cylinder.


DT Online Buyers' Guide
A3 Cartridge Paper A3 Layout Pad A3 Marker Pad A3 Coloured Pad A3 Tracing Paper A3 Graph Pad A3 Drawing Board Drawing and Sketching Pencil Art Set Coloured Pencil Set A3 Light Box
A3 Cartridge Paper A3 Layout Pad A3 Marker Pad A3 Coloured Pad A3 Tracing Paper A3 Graph Pad A3 Drawing Board Drawing and Sketching Pencil Art Set Coloured Pencil Set A3 Light Box