平面的投影Projectionofaplane课件

平面的投影Projectionofaplane主讲人：黄一帆教学目标Teachingobjectives1.了解平面的投影原理及特性2.熟悉平面在投影体系的位置关系3.掌握平面的三面投影绘制UnderstandtheprojectionprincipleandcharacteristicsofaplaneFamiliarwiththepositionalrelationshipoftheplaneintheprojectionsystemMasterthethreesidedprojectiondrawingofaplane目录CONTENTS1234认识平面投影UnderstandingPlanarProjection各种位置平面的投影Projectionofvariouspositionplanes平面投影的画法Drawingmethodof3planeprojection课程总结CourseSummary5思考题Thinkingquestions1认识平面投影UnderstandingPlanarProjectionONE几何体Geometry点

spot线

line面

surface皮影Shadowpuppetry垂直

vertical平行

parallel倾斜

incline积聚性

accumulation显实性

Materiality类似性

similarity2各种位置平面的投影ProjectionofvariouspositionplanesTWO一般位置平面obliqueplane特殊位置平面Speciallocationplane平面分类Planeclassification投影面倾斜面Projectionplaneinclinedplane投影面平行面Projectionplaneparallelplane投影面垂直面Projectionplaneverticalplane正平线面frontalplane平行V面ParallelV-plane正平面frontalplane平行V面ParallelV-plane水平面horizontalplane平行H面ParallelH-plane侧平面Lateralplane平行W面ParallelW-plane铅垂面Plumbsurface垂直H面VerticalH-plane铅垂面Plumbsurface垂直H面VerticalH-plane正垂面Perpendicularplane垂直V面VerticalV-plane侧垂面Lateralsaggingsurface垂直W面VerticalW-plane三面类似Similaronthreesides一线两面Onesidewithtwolines一面两线Onesidewithtwolines3平面投影的画法TheDrawingMethodofPlaneProjectionTHREE过平面内两点

Passingthroughtwopointsintheplane过平面内一点Passingthroughapointintheplane平行于平面内一直线Paralleltoastraightlineintheplane4课程总结CourseSummaryFOUR平面的投影Projectionofaplane平面分类FlatClassification平面画法Projectiondrawing投影面平行面Projectionplaneparallelplane投影面垂直面Projectionplaneverticalplane投影面倾斜面Projectionplaneinclinedplane单一平面Singlestraightline平面内的直线Straightlinesintheplane平面内的点Pointsintheplane5思考题QuestionsFIVE12请思考如下问题Pleasethinkthefollowingquestions根据投影图，怎样判断点是否属于平面内?制图中，利用迹线表示平面的原理是什么?Howtodeterminewhetherapointbelongstotheplanebasedonthep