def select( self, screen, polygons ):
for polygon in polygons:
all_points = polygon.get_points()
highlights = []
for i in range( 0, len( all_points ) ):
p = all_points[ i ]
z = p.z - self.position.z
if polygon.is_selected() and z < self.observer.z and p.z == self.position.z:
this = Point( p.x - self.position.x, p.y - self.position.y, z )
prev = all_points[ i - 1 ]
last = Point( prev.x - self.position.x, prev.y - self.position.y, z )
highlights.append( [ last.rel_to( self.observer ), this.rel_to( self.observer ) ] )
for highlight in highlights:
pygame.draw.line( screen, ( 255, 0, 0 ), highlight[ 0 ], highlight[ 1 ], 1 )
def highlight( self, screen, polygons ):
for polygon in polygons:
all_points = polygon.get_points()
highlights = []
for i in range( 0, len( all_points ) ):
p = all_points[ i ]
z = p.z - self.position.z
if z < self.observer.z and p.z == self.position.z:
this = Point( p.x - self.position.x, p.y - self.position.y, z )
highlights.append( [ this.rel_to( self.observer ) ] )
prev = all_points[ i - 1 ]
if prev.z == self.position.z:
last = Point( prev.x - self.position.x, prev.y - self.position.y, z )
highlights.append( [ last.rel_to( self.observer ), this.rel_to( self.observer ) ] )
for highlight in highlights:
if len( highlight ) == 1:
pygame.draw.circle( screen, self.highlight_colour, highlight[ 0 ], self.highlight_radius, 1 )
elif len( highlight ) == 2:
pygame.draw.line( screen, self.highlight_colour, highlight[ 0 ], highlight[ 1 ], 1 )
