立方体の斜軸測投影図における認識限界に関する諸考察

概要

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It is of importance to define the suitable project system of an oblique projection drawing whose projection principle is different from that of human eyesight, while the limit of cognizing an oblique drawing causing misunderstanding is not generally definite. The adequate or allowable direction and scale of a cube on an oblique projection drawing were discussed based on cognizing tests, considering that an oblique projection drawing is distorted from an axonometric projection drawing in the present study. Two kinds of tests were carried out ; one is with table displaying drawings in order, and the other is with those at random by parameters θ and φ . The tests reached the limit length ratio <I>g</I>'<28%, which is deeply correlated with the distortion and it was concluded that with the adequate or allowable projection system one should draw the three surfaces of a cube equally under satisfaction of the limit length ratio. The corresponding parameter set is in the domain from «θ =60° φ =30° » to «θ = 70° φ=45°». The tests suggested the tendency to feel the drawings with the glance from high position less practical, and the random display tests showed the directivities depending on the characteristics of the subjects.
日本図学会の論文
2003-06-01