Method and apparatus for sight distance analysis

Abstract

A computer implemented method of visualizing an infrastructure comprising: acquiring a cross section definition, the definition comprising points defining a link and link information, each of the points exhibiting a type; creating at least one three dimensional face linking points of a same type; assigning a face rendering for each of the created at least one three dimensional faces with a material definitional associated with the link information; and displaying the faces with the rendering. The invention also provides for a computing system operable to: acquire a cross section definition, the definition comprising points defining a link and link information, each of the points exhibiting a type; create at least one three dimensional face linking points of a same type; and assign a face rendering for each of the created at least one three dimensional faces with a material definitional associated with the link information.

1 - 20 . (canceled) 
     
     
         21 . A computer implemented method of sight distance analysis comprising:
 acquiring an infrastructure as a scene-graph comprising three dimensional entities;   acquiring a nominal location for a moving observer in relation to a path on said infrastructure;   acquiring a distance to a target, said target being maintained at said distance from said moving observer;   calculating for a plurality of points along said path on said infrastructure a straight line between said moving observer and said target;   defining a 2 dimensional polyline representation of a visual intrusion zone; and   projecting said visual intrusion zone on a representation of said scene-graph.   
     
     
         22 . The computer implemented method according to  claim 21 , wherein said visual intrusion zone is a function of all of said calculated straight lines. 
     
     
         23 . The computer implemented method according to  claim 22 , wherein said visual intrusion zone forms a closed polygon. 
     
     
         24 . The computer implemented method according to  claim 21 , wherein said visual intrusion zone forms a closed polygon. 
     
     
         25 . A computing system for sight distance analysis comprising a computer and a monitor, said computer being operable to:
 acquire an infrastructure as a scene-graph comprising three dimensional entities;   acquire a nominal location for a moving observer in relation to a path on said infrastructure;   acquire a distance to a target, said target being maintained at said distance from said moving observer;   calculate for a plurality of points along said path on said infrastructure a straight line between said moving observer and said target;   define a 2 dimensional polyline representation of a visual intrusion zone; and   project said visual intrusion zone on a representation of said scene-graph on said monitor.   
     
     
         26 . The computing system according to  claim 25 , wherein said visual intrusion zone is a function of all of said calculated straight lines. 
     
     
         27 . The computing system according to  claim 26 , wherein said visual intrusion zone forms a closed polygon. 
     
     
         28 . The computing system according to  claim 25 , wherein said visual intrusion zone forms a closed polygon. 
     
     
         29 . A computer readable medium containing instructions for controlling an electronic device to perform a method of sight distance analysis, the method comprising:
 acquiring an infrastructure as a scene-graph comprising three dimensional entities;   acquiring a nominal location for a moving observer in relation to a path on said infrastructure;   acquiring a distance to a target, said target being maintained at said distance from said moving observer;   calculating for a plurality of points along said path on said infrastructure a straight line between said moving observer and said target;   defining a 2 dimensional polyline representation of a visual intrusion zone; and   projecting said visual intrusion zone on a representation of said scene-graph.   
     
     
         30 . The computer readable medium according to  claim 29 , wherein said visual intrusion zone is a function of all of said calculated straight lines. 
     
     
         31 . The computer readable medium according to  claim 30 , wherein said visual intrusion zone forms a closed polygon. 
     
     
         32 . The computer readable medium according to  claim 29 , wherein said visual intrusion zone forms a closed polygon.