Abstract: The present invention relates to a method of detecting collisions on a Graphics Processing Unit (GPU). Each collision detection object Oi is projected onto a reference direction, thus obtaining an interval Ii represented by a set {mi, Mi}. Radix sorting based on obtained mi for all Oi, thus obtaining a sorted list L. The sorted list is swept, and then colliding pairs Pi are detected. All colliding pairs are configured into a single set, thus obtaining a final colliding pair P. On a GPU, SaP can be performed on a plurality of collision detection objects in parallel using the blocks of a plurality of threads.

Abstract: The present invention relates to a method of detecting collisions on a Graphics Processing Unit (GPU). Each collision detection object Oi is projected onto a reference direction, thus obtaining an interval Ii represented by a set {mi,Mi}. Radix sorting based on obtained mi for all Oi, thus obtaining a sorted list L. The sorted list is swept, and then colliding pairs P?are detected. All colliding pairs are configured into a single set, thus obtaining a final colliding pair P. On a GPU, SaP can be performed on a plurality of collision detection objects in parallel using the blocks of a plurality of threads.

Abstract: The invention discloses an acrylic acid-modified epoxy polyester resin and the preparation process thereof. The resin comprises 100 pbw of a copolymer (A) formed from an unsaturated fatty acid-modified polyester and a bisphenol A type epoxy resin, and 20-40 pbw of poly(meth)acrylic acid (ester) (B). The preparation process comprises the following steps: (1) alcoholyzing a drying oil with a polyol; (2) adding successively, to the product from step (1), a dibasic anhydride, a fatty acid containing a conjugated double bond and an epoxy resin, and esterifying to obtain an epoxy polyester; and (3) copolymerizing the epoxy polyester from step (2) and an acrylic monomer. This invention also provides a water-based emulsion containing said resin, and a water-based paint exhibiting excellent antirust property and having low production cost.

Abstract: The invention discloses an acrylic acid-modified epoxy polyester resin and the preparation process thereof. The resin comprises 100 pbw of a copolymer (A) formed from an unsaturated fatty acid-modified polyester and a bisphenol A type epoxy resin, and 20-40 pbw of poly(meth)acrylic acid (ester) (B). The preparation process comprises the following steps: (1) alcoholyzing a drying oil with a polyol; (2) adding successively, to the product from step (1), a dibasic anhydride, a fatty acid containing a conjugated double bond and an epoxy resin, and esterifying to obtain an epoxy polyester; and (3) copolymerizing the epoxy polyester from step (2) and an acrylic monomer. This invention also provides a water-based emulsion containing said resin, and a water-based paint exhibiting excellent antirust property and having low production cost.