class Canvas(object):
def __init__(self, world, resolution):
self.bg_color = "#FFFFFF"
self.color = "#00000"
self.colormap = ColorMap(self.bg_color)
self.pixmap = PixMap(world, resolution, self.colormap)
def as_pixmap(self):
return self.pixmap.as_pixmap()
def set_color(self, color):
self.color = color
def convert_to_viewport(self, point):
x, y = int(round(point.x)), int(round(point.y))
return x, y
def draw_pixel(self, point):
x, y = self.convert_to_viewport(point)
self.pixmap.set_pixel(x, y, self.color)
def draw_line(self, line):
points = Rasterizer.rasterize_line(line)
for point in points:
self.draw_pixel(point)
def draw_polygon(self, polygon):
for line in polygon.lines:
self.draw_line(line)
def fill_polygon(self, polygon):
filler = PolygonFiller(self)
filler.fill(polygon)
def draw(self, primitive):
name = primitive.name()
fn = getattr(self, 'draw_' + name)
fn(primitive)
def fill(self, primitive):
name = primitive.name()
fn = getattr(self, 'fill_' + name)
fn(primitive)
class Canvas(object):
def __init__(self, world):
self.bg_color = "#FFFFFF"
self.color = "#00000"
self.xmin, self.xmax, self.ymin, self.ymax = world
self.width = self.xmax - self.xmin
self.height = self.ymax - self.ymin
self.colormap = ColorMap(self.bg_color)
self.pixmap = PixMap(world, self.colormap)
def as_pixmap(self):
return self.pixmap.as_pixmap()
def set_color(self, color):
self.color = color
def convert_to_screen(self, point):
# Postscript makes 0,0 the bottom left // XPM makes 0,0 the top left
x, y = int(round(point.x)), int(round(point.y))
return x, y
def draw_pixel(self, point):
x, y = self.convert_to_screen(point)
self.pixmap.set_pixel(x, y, self.color)
def draw_line(self, line):
points = Rasterizer.rasterize_line(line)
for point in points:
self.draw_pixel(point)
def draw_polygon(self, polygon):
for line in polygon.lines:
self.draw_line(line)
def draw(self, primitive):
name = primitive.name()
fn = getattr(self, 'draw_' + name)
fn(primitive)