a projection made by parallel lines drawn from every point of a figure and meeting the plane of projection obliquely. See also:Projection Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co. Want to thank TFD for its existence?Tell a friend about us, add a link...
points, lines, planes, crossing, parallel, intersect, vertical positions of the line and the line, intersect positions of the line and the plane, the plane and the plane, can explain projection of a first corner and a third corner and can be unfolded into a small blackboard for explaining...
1.(General Engineering) a style of engineering drawing in which true dimensions are represented as if projected from infinity on three planes perpendicular to each other, avoiding the effects of perspective 2.(Physical Geography) a type of zenithal map projection in which the area is mapped as ...
第四讲平面的投影ProjectionofPlane •平面的表示法Representationsofplanes•各种位置的平面PositionofPlanes•平面上的点和直线Pointsandlinesinplanes Z 平面图形投影总是 Y 为平面图形或直线。X Theprojectionofaplanar surfacealwaysisalineora planarsurface.1、平面的表示法Representationsofplanes c ● c ● a● ...
Astereographic projection, or more simply astereonet,is a powerful method for displaying and manipulating the 3-dimensional geometry of lines and planes (Davis and Reynolds 1996). The orientations of lines and planes can be plotted relative to the center of a sphere, called the projection sphere...
提出一种以从平面体三面投影中“提取”顶点、棱线和棱面三维信息为基础 ,得出平面体“构型”的计算方法。 Based on the 3D data of vertex,edges and planes,which are obtained from the tri angle projection of...
Its parameters are the distance to the near and far planes and the world-space coordinate of the left, right, top, and bottom clipping planes. A frustrum matrix takes the following form:(一个常见的透视矩阵就是视锥体矩阵,视锥体矩阵是一个透视矩阵,你需要指定左右上下近剪裁面远剪裁面来定义这个...
⇒(3+λ)3+(−1+2λ(x+2y−z−2)=0 ⇒(3+λ)x+(−1+2λ)2+(2−λ)1=0 ⇒6λ−9⇒λ=−3/2 ⇒ Plane is 3x−8y+7z+4=0 Now line of projection is line of intersection of planes 3x−8y+7z+4=0 and 3x+2y+z=0 ...
1.7.2 The Projection of a Right Angle Fig. 1.20 shows two line segments, BA‾ and BC‾, and two image planes, π1 and π2, perpendicular one to another. As shown in Section 1.8, such projection planes are used in Descriptive Geometry. In Fig. 1.20 the angle ABCˆ is right and...
In En (n≥4) , when two mutually perpendicular lines are in parallel with two groups of super projection planes respectively, the lines characters on the crossing planes of the super projection planes are discussed and the projection theorem of the right angle in the n-dimentional space is als...