简介:Asimplerobust'strutalgorithm'ispresentedwhich,whengivenagraphembeddedin3Dspace,thickensitsedgesintosolidstruts.Variousapplications,crystallographicandsculptural,areshowninwhichsmoothhigh-genusformsaretheoutput.Atoolboxofalgorithmictechniquesallowforavarietyofnovel,visuallyengagingformsthatexpressamathematicalaesthetic.Insculpturalexamples,hyperbolictessellationsinthePoincaréplanearetransformedinseveralwaystothree-dimensionalnetworksofedgesembodiedwithinaplausiblyorganicorganization.Bytheuseofdifferenttransformationsandadjustableparametersinthealgorithms,avarietyofattractiveformsresult.Thetechniquesproducewatertightboundaryrepresentationsthatcanbebuiltwithsolidfreeformfabricationequipment.Thefinalphysicaloutputsatisfiesthe'coolnesscriterion,'thatpassersbywillpickthemupandsay'Wow,that'scool!'
简介:Thispaperpresentsanewalgorithmforgenerating3DimagesofB-repsobjectswithtrimmedsurfaceboundaries.The3Dimageisadiscretevoxel-maprepresentationwithinaCubicFrameBuffer(CFB).Thedefinitionof3Dimagesforcurve,surfaceandsolidobjectareintroducedwhichimplytheconnectivityandfidelityrequirements.AdaptiveForwardDifferencingmatrix(AFD-matrix)for1D-3Dmanifoldsin3Dspaceisdeveloped.BysettingrulestoupdatetheAFD-matrix,theforwarddifferencedirectionandstepwisecanbeadjusted.Finally,anefficientalgorithmispresentedbasedontheAFD-matrixconceptforconvertingtheobjectin3Dspaceto3Dimagein3Ddiscretespace.
简介:打印的3D变得流行并且广泛地在最近的年里在各种各样的应用被使用了。越来越多的家用户有动机设计他们的自己的模型然后用3D打印机制作他们。然而,打印目标可以有结构的一些或因为用户可以是3D模型上的压力分析上的知识的缺乏,强调缺点。在这份报纸,我们在场帮助用户分析的一条途径一模型结构的力量当设计它的形状时。我们采用部分结构的分析而不是常规女性(有限元素方法)计算地昂贵的分析。基于部分结构的分析,我们在集成网孔设计帮助的途径进口骨骼,力量计算和网孔修正很好。骨骼能也指导节为分析造和负担计算。为有在在从分析结果的模型的阀值价值上的高应力的弱区域,我们的系统由放大骨骼的相应骨头以便使这些区域足够生硬改正他们。很多个实验表明了我们的途径的适用性和有实行可能。
简介:Isometric3Dshapepartialmatchinghasattractedagreatamountofinterest,withaplethoraofapplicationsrangingfromshaperecognitiontotexturemapping.Inthispaper,weproposeanovelisometric3DshapepartialmatchingalgorithmusingthegeodesicdiskLaplacespectrum(GD-DNA).Ittransformsthepartialmatchingproblemintothegeodesicdiskmatchingproblem.Firstly,thelargestenclosedgeodesicdiskextractedfromthepartialshapeismatchedwithgeodesicdisksfromthefullshapebytheLaplacespectrumofthegeodesicdisk.Secondly,GeneralizedMulti-DimensionalScalingalgorithm(GMDS)andEuclideanembeddingareconductedtoestablishfinalpointcorrespondencesbetweenthepartialandthefullshapeusingthematchedgeodesicdiskpair.TheproposedGD-DNAisdiscriminativeformatchinggeodesicdisks,anditcanwellsolvetheanchorpointselectionprobleminchallengingpartialshapematchingtasks.ExperimentalresultsontheShapeRetrievalContest2016(SHREC'16)benchmarkvalidatetheproposedmethod,andcomparisonswithisometricpartialmatchingalgorithmsintheliteratureshowthatourmethodhasahigherprecision.
简介:3D技术如今已经是相当的普及,各种类型的游戏都能见到它的影子,其中以FPS和RTS两个类型游戏的表现力量最为出色,在这两个类型的游戏当中,开发者使用了大量最新的图形技术,使得游戏的画面非常出色,因此使得游戏的品质也得到了一个质的飞跃。诸如HDR-高动态范围,体积雾化,测定空间式生成阴影等技术,完全要拜DirectX9的SM3.0所赐。然而RPG游戏的3D化进程是相当缓慢的。也许是因为开发者不愿意投入技术,而将更多精力投入到游戏的可玩性上。去年发售的《神鬼寓言》是非常出色的,但是缺少了绚丽的SM3.0特效,感觉还是有遗憾的。然而除了《神鬼寓言》,离我们最近的RPG大作就是很多年前的《无冬之夜》了,这也许是RPG厂商都转向了网络游戏,很少开发单机RPG的缘故吧,不过就在最近,RPG游戏开始崛起了,代表作品就是《哥特王朝Ⅲ》。