samplerulefile.cga

/**
 * File:    ruleheights.cga
 * Created: 10 Jun 2013 13:42:55 GMT
 * Author:  Flora Roumpani

 This is a sample cga rule file used to simply extrude the volumes and
 control colors. In this case we are using the Twitter palette.
 The user can modify this rule to create diffrent building shapes
 instead of simple extrutions. 

 */

version "2011.1"

attr HGT = 0
attr opacitytwit=1
attr opacityshape=0.6



##to use for a colorramp
#attr maxHGT= 1000
#attr min = 0
#@Range(0,1)
#attr colorValue = 1
#attr x_norm =1 / (maxHGT - min) * (maxHGT - min)

	
Lot -->
	
	
	##use colorRamp
	#extrude (HGT)
	#color (colorRamp("brownToBlue",x_norm))
	#set (material.opacity, opacity)
	#Volume.

	
	case  HGT < 5 :
	extrude (30)color ("#CACACA")
	set (material.opacity, opacityshape)
	Volume.
	
	case  HGT < 100 :
	extrude (HGT)color ("#A3E0FF")#twitterpalete
	set (material.opacity, opacitytwit)
	Volume.
	
	case  HGT < 200 :
	extrude (HGT)color ("#66CCFF")#twitterpalete
	set (material.opacity, opacitytwit)
	Volume.
	
	case  HGT < 400 :
	extrude (HGT)color ("#52A3CC")#twitterpalete
	set (material.opacity, opacitytwit)
	Volume.
	
	case  HGT < 600 :
	extrude (HGT)color ("#478FB2")#twitterpalete
	set (material.opacity, opacitytwit)
	Volume.
	
	case  HGT < 800 :
	extrude (HGT)color ("#3D7A99")#twitterpalete
	set (material.opacity, opacitytwit)
	Volume.
	
	case  HGT > 1000 :
	extrude (HGT)color ("#295266")#twitterpalete
	set (material.opacity, opacitytwit)
	Volume.
	
	else:
	set (material.opacity, opacityshape)
	Volume.