Abstract: The invention relates to method for simulating wind fields in a web browser using the computing power of a graphics card, the method comprising: obtaining wind field data, uploading the wind field data, freeing up a memory space, saving a first position of a particle, determining a second position of the particle, updating the position of the particle and visualizing a wind flow marker.

Abstract: Disclosed is a method for providing 3D GIS (Geographic Information System) web services using a web client and a server, the method including the steps of with the server, processing information to be transmitted to the web client, and with the server, transmitting, to the web client, information to be displayed on a screen of the web client in response to a request from the web client, wherein the information in the step of processing information includes information about a 3D object containing an internal object, the information about a 3D object having one or more first sub-cubes and one or more second sub-cubes set for the 3D object, with the first sub-cubes being used for processing visibility indexes and the second sub-cubes being used for processing spatial indexes, and wherein the step of transmitting information includes transmitting information about an internal object that corresponds to a visibility index overlapped with a spatial index.

Abstract: Disclosed is a method for providing 3D GIS web services using a web client and a server, including the steps of with the server, processing information to be transmitted to the web client, and with the server, transmitting, to the web client, information to be displayed on a screen of the web client in response to a request from the web client, wherein the information in the step of processing information includes information about a 3D object containing an internal object, the information about a 3D object having one or more first sub-cubes and one or more second sub-cubes set for the 3D object, with the first sub-cubes being used for processing visibility indexes and the second sub-cubes being used for processing spatial indexes, and wherein the step of transmitting information includes transmitting information about an internal object that corresponds to a visibility index overlapped with a spatial index.

Abstract: The present disclosure relates a method for providing 3D GIS (Geographic Information System) web services using a web client and a server, the method including the steps of: in the server side, processing information to be transmitted to the web client; and in the server side, upon request of the web client, transmitting to the web client the information to be displayed on a screen of the web client. In the step of processing information, the information to be processed includes a main image and peripheral images around the main image, and the step of transmitting the information involves searching for a main image and peripheral images around the main image that corresponds to a request of the web client if the request includes information about an image to be visualized on the screen.

Abstract: The present disclosure relates a method for providing 3D GIS (Geographic Information System) web services using a web client and a server, the method including the steps of: in the server side, processing information to be transmitted to the web client; and in the server side, upon request of the web client, transmitting to the web client the information to be displayed on a screen of the web client. In the step of processing information, the information to be processed includes a main image and peripheral images around the main image, and the step of transmitting the information involves searching for a main image and peripheral images around the main image that corresponds to a request of the web client if the request includes information about an image to be visualized on the screen.

Abstract: Disclosed is a method for providing 3D GIS web services using a web client and a server, including the steps of with the server, processing information to be transmitted to the web client, and with the server, transmitting, to the web client, information to be displayed on a screen of the web client in response to a request from the web client, wherein the information in the step of processing information includes information about a 3D object containing an internal object, the information about a 3D object having one or more first sub-cubes and one or more second sub-cubes set for the 3D object, with the first sub-cubes being used for processing visibility indexes and the second sub-cubes being used for processing spatial indexes, and wherein the step of transmitting information includes transmitting information about an internal object that corresponds to a visibility index overlapped with a spatial index.

Abstract: Disclosed is a method for providing 3D GIS (Geographic Information System) web services using a web client and a server, the method including the steps of with the server, processing information to be transmitted to the web client, and with the server, transmitting, to the web client, information to be displayed on a screen of the web client in response to a request from the web client, wherein the information in the step of processing information includes information about a 3D object containing an internal object, the information about a 3D object having one or more first sub-cubes and one or more second sub-cubes set for the 3D object, with the first sub-cubes being used for processing visibility indexes and the second sub-cubes being used for processing spatial indexes, and wherein the step of transmitting information includes transmitting information about an internal object that corresponds to a visibility index overlapped with a spatial index.

Abstract: Disclosed is a method for reducing volume of 3D modeling data, including: a first step of selecting a block object in the 3D modeling data, a second step of extracting from the 3D modeling data a target block to be comparable with the block object, a third step of comparing the block object with the target object, and a fourth step of designating the target object as a reference object if the block object and the target object are turned out to be identical with each other as a result of the comparing step.