class Grid:
# Class to rasterize a Field down into a big grid of squares
def __init__( self, wide, high ):
# Basic, keep a background field, and a 2d array of values
self.f = Field( )
self.w = wide
self.h = high
self.vals = [ [ 0 for i in range( self.w ) ] for j in range( self.h ) ]
# Pre-compute all the box values
self.step( 0.0 )
def reset( self ):
# Basic, reset the underlying field
self.f.reset( )
def step( self,perc ):
# Again basic, step the field, then compute all the box values
self.f.step( perc )
self.compute( )
def compute( self ):
for y in range( self.h ):
for x in range( self.w ):
# Map the x and y to the center of the box, get a value from the field
self.vals[ y ][ x ] = self.f.getVal( float( x ) / ( self.w - 1 ), float( y ) / ( self.h - 1 ) )
def getVal( self, x, y ):
# Basic as it gets
return self.vals[ y ][ x ]
