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| 1 | An octree-based proxy for collision detection in large-scale particle systems显示文摘Particle systems are important building block for simulating vivid and detail-rich effects in virtual world.One of the most difficult aspects of particle systems has been detecting collisions between particles and mesh surface.Due to the huge computation,a variety of proxy-based approaches have been proposed recently to perform visually correct simulation.However,all either limit the complexity of the scene,fail to guarantee non-penetration,or are too slow for real-time use with many particles.In this paper,we propose a new octree-based proxy for colliding particles with meshes on the GPU.Our approach works by subdividing the scene mesh with an octree in which each leaf node associates with a representative normal corresponding to the normals of the triangles that intersect the node.We present a view-visible method,which is suitable for both closed and non-closed models,to label the empty leaf nodes adjacent to nonempty ones with appropriate back/front property,allowing particles to collide with both sides of the scene mesh.We show how collisions can be performed robustly on this proxy structure in place of the original mesh,and describe an extension that allows for fast traversal of the octree structure on the GPU.The experiments show that the proposed method is fast enough for real-time performance with millions of particles interacting with complex scenes. | FAN WenShan WANG Bin PAUL Jean-Claude SUN JiaGuang | 2013 | Science China(Information Sciences)2013，56，1： | 8 |
| 2 | Approximate degree reduction of B6zier curves显示文摘 | Hu Shimin Sun Jiaguang Jin Tongguang | 1998 | Tsinghua Science & Technology1998，3，2： | 1 |
| 3 | The sweep-envelope differential equation algorithm for general deformed swept volumes显示文摘 | Wang Guoping Sun Jiaguang Hua Xuanji | 2000 | Computer Aided Geometric Design2000，17，5： | 1 |
| 4 | Workflow-based resource allocation to optimize overall performance of composite services显示文摘 | BangYu Wu Chi-Hung Chi Zhe Chen Ming Gu JiaGuang Sun | 2008 | Future Generation Computer Systems2008，，3： | 1 |
| 5 | Reconstruction of curved solids from engineering drawings显示文摘 | Liu Shixia Hu Shimin Chen Yujian Sun Jiaguang | | 0，，14： | 1 |
| 6 | A constructive approach to solving 3D geometric constraint systems using dependence analysis显示文摘 | LI Yantao HU Shimin SUN Jiaguang | 2002 | Computer Aided Design2002，34，2： | 1 |
| 7 | Degree reduction of B-spline curves 显示文摘 | Yong Junhai Hu Shimin Sun Jiaguang | 2001 | Computer Aided Geometric Design2001，18，2： | 1 |
| 8 | Approximate degree reduction of B6zier curves 显示文摘 | Hu Shimin Sun Jiaguang Jin Tongguang | 1998 | Tsinghua Science and Technology1998，3，2： | 1 |
| 9 | Approximate degree reduction of Bézier curves显示文摘 | Hu Shimin Sun Jiaguang Jin Tongguang | 1998 | Tsinghua Science and Technology1998，3，2： | 1 |
| 10 | Scan BIST with biased scan test signals显示文摘The conventional test-per-scan built-in self-test (BIST) scheme needs a number of shift cycles followed by one capture cycle. Fault effects received by the scan flip-flops are shifted out while shifting in the next test vector like scan testing. Unlike deterministic testing, it is unnecessary to apply a complete test vector to the scan chains. A new scan-based BIST scheme is proposed by properly controlling the testsignals of the scan chains. Different biased random values are assigned to the test signals of scan flip-flops in separate scan chains. Capture cycles can be insertedat any clock cycle if necessary. A new testability estimation procedure according to the proposed testing scheme is presented. A greedy procedure is proposed to select a weight for each scan chain. Experimental results show that the proposed method can improve test effectiveness of scan-based BIST greatly, and most circuits can obtain complete fault coverage or very close to complete fault coverage. | XIANG Dong CHEN MingJing SUN JiaGuang | 2008 | Science in China(Series F)2008，51，7： | 1 |
| 11 | A construct approach to solving 3-D geometric constraint systems using dependency analysis显示文摘 | Li Yantao Hu Shimin Sun Jiaguang | 2002 | Computer-Aided Design2002，34，2： | 1 |
| 12 | A constructive approach to solving 3D geometric constraint systems using dependence analysis显示文摘 | Li Yantao Hu Shimin Sun Jiaguang | 2002 | Computer-Aided Design2002，34，2： | 1 |
| 13 | Approximate degree reduction of rectangular Bézier surfaces 显示文摘 | Hu Shiming Zheng Guoqin Sun Jiaguang | 1997 | Chinese Journal of Advanced Software Research1997，4，4： | 1 |
| 14 | Approximate degree reduction of Bézier curves 显示文摘 | Hu Shiming Sun Jiaguang Jin Tongguang | 1998 | Tsinghua Science & Technology1998，3，2： | 1 |
| 15 | Task-activity based aces control for process collaboration environments显示文摘 | LU Yahui ZHANG Li SUN Jiaguang | 2009 | Com- puters in Industry2009，60，6： | 1 |
| 16 | Approximate Degree Reduction of Bézier Curves显示文摘 | Hu Shimin Sun Jiaguang Jin Tongguang Wang Cuozhao | 1998 | Tsinghua Science and Technology1998，3，2： | 1 |
| 17 | Approximate degree reduction of Bézier curves显示文摘 | Hu Shimin Sun Jiaguang Jin Tongguang Wang Guozhao | 1998 | Tsinghua Science and Technology1998，3，2： | 1 |
| 18 | Task activity based access control for process collaboration environments显示文摘 | LU Yahui ZHANG Li SUN Jiaguang | 2009 | Computers in Industry2009，60，6： | 1 |
| 19 | A note on approximation of discrete data by G1 arc splines显示文摘 | YONG Junhai HU Shimin SUN Jiaguang | 1999 | Computer- Aided Design1999，31，14： | 1 |
| 20 | Reconfigured scan forest for test application cost,test data volume and test power reduction显示文摘 | Xiang Dong Li KaiWei Sun JiaGuang | 2007 | IEEE Trans on Computers2007，56，4： | 1 |
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