CAJ | 학술논문

SharpMap是一款国外优秀的开源GIS软件,在GIS二次开发中广受国内外学者的关注,已有众多研究机构基于SharpMap开发出业务化的系统;但SharpMap现有功能中不包含鼠标滚轮地图缩放功能,使得其GIS地图浏览操作大不方便.探讨SharpMap已有的缩放算法原理,基于滚轮缩放操作员关注点相对屏幕坐标系位置不变和相对地理坐标系缩放视野比例一致的原则,提出SharpMap的鼠标滚轮地图缩放算法,并在.Net4.0框架下,利用C#语言开发,对算法进行了编程实现,效果表明本文构建的算法用于SharpMap二次开发能实现流畅、稳定的地图缩放效果、该算法对同类GIS功能的开发具有一定的借鉴意义.
SharpMap시일관국외우수적개원GIS연건,재GIS이차개발중엄수국내외학자적관주,이유음다연구궤구기우SharpMap개발출업무화적계통;단SharpMap현유공능중불포함서표곤륜지도축방공능,사득기GIS지도류람조작대불방편.탐토SharpMap이유적축방산법원리,기우곤륜축방조작원관주점상대병막좌표계위치불변화상대지리좌표계축방시야비례일치적원칙,제출SharpMap적서표곤륜지도축방산법,병재.Net4.0광가하,이용C#어언개발,대산법진행료편정실현,효과표명본문구건적산법용우SharpMap이차개발능실현류창、은정적지도축방효과、해산법대동류GIS공능적개발구유일정적차감의의.
SharpMap is a foreign excellent open source GIS software, which has gained extensive attention of scholars both at domestic and abroad for GIS application development. There are many research institutions have been developed business GIS system based on SharpMap. It makes the GIS maps more conveniences but lack of the function of zooming map with mouth wheel. This paper discusses the principle of algorithm for zooming in SharpMap, based on which an mouse wheel controls map zoom algorithm for SharpMap is proposed. Under the Net4.0 framework, using the C# language development, programming, the algorithm became the realization. The results showed that the effect of map zooming with mouse wheel is smooth and stable. The method is universal and provides a reference for the development with SharpMap.