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1、Lesson2TheArchitecturalChartingDrawingRecognitionandFundamentalsofCADCAD----ComputerAidedDesignTheArchitecturalChartingandDrawingRecognitionThearchitecturalengineeringplatisonekindoftheengineeringplat,whichisusedtoexpresstheshape,size,material,structure,constructionmodeofthebu
2、ildingaswellasthespecificationandsoon[1].Itisnotonlyanimportanttooltoexpressdesignintentions,exchangetechnologythoughts,butalsoanimportanttechnicaldocumenttoinstructtechnicalworksuchasproduction,construction,managementandsoon.architecturalengineeringplat建筑工程图样structure结构，构造con
3、struction建设，施工“Thearchitecturalchartinganddrawingrecognition”isthetheoryandmethodthatstudiesdrawingandreadingofthearchitecturalengineeringplat,andalsoisthemaintechnologicalcurriculumthatraisesseniorengineeringappliedtalentsinproductlineforrelatedmajors.Theprimarycoverageofthis
4、curriculumincludes:elementaryknowledgeandskillofcharting,projectionchartingandthearchitecturalengineeringplatandsoon.architecturalchartinganddrawingrecognition建筑工程制图与识图projectioncharting投影制图curriculum课程Theprojectionphenomenonreferstothatifaobjectisirradiatedunderthesunlightorl
5、amplight,itwillleaveashadowonthegroundoronthewall.Byscientificallyandabstractedlysummarizingtherelationshipbetweenobjectandshadowinthelong-termproductionpractice,peoplesumupthemethodofprojection.Theprojectioniswidelyusedtoexpresstheobjectintheengineeringcircle,soastorealizethe
6、interconvertionbetweenthree-dimensionalobjectsandtwo-dimensionalobjects.First,ProjectionchartingTheconceptofprojectionprojectionphenomenon投影现象three-dimensional三维Threebasicelementsthattheprojectionmusthavearetheprojectionline,theobject,theprojectingplane.Fig2.1Projectionprocess
7、Projectionscommonlyusedintheprojectarethree-planeprojectiondrawing,theaxonometricdrawingandtheperspectivedrawing.（a）three-planeprojectiondrawing（b）axonometricdrawing（c）perspectivedrawingFig2.2Projectionthree-planeprojectiondrawing三面投影图theaxonometricdrawing轴测图theperspectivedraw
8、ing透视图Three-planeprojectiondrawingisthemainpatternintheprojec
