def draw(self, Canvas, line): r_size = 10 / Canvas.Scale point = self.pos rightPoint = (point[0] - r_size, point[1]) leftPoint = (point[0] + r_size, point[1]) upRightPoint = (rightPoint[0], rightPoint[1]+ r_size) downRightPoint = (rightPoint[0], rightPoint[1]-r_size) upLeftPoint = (leftPoint[0], leftPoint[1]+r_size) downLeftPoint = (leftPoint[0], leftPoint[1]-r_size) theta = Geom.angleFromXaxis(line) firstTriangle = [point, upRightPoint, downRightPoint] secondTriangle = [point, upLeftPoint, downLeftPoint] firstTriangle = Geom.rotatePointList(firstTriangle, theta, point) secondTriangle = Geom.rotatePointList(secondTriangle, theta, point) Canvas.AddPolygon( firstTriangle, LineWidth=1, LineColor="BLUE", FillColor="BLUE", ) Canvas.AddPolygon( secondTriangle, LineWidth=1, LineColor="BLUE", FillColor="BLUE", )
def draw(self, Canvas, line): t_size = 8 / Canvas.Scale point = self.pos ## Make the T shape with lines downPoint = (point[0] , point[1]-t_size/2) upPoint = (point[0], point[1]+t_size) rightPoint = (point[0]+t_size, point[1]+t_size) leftPoint = (point[0]-t_size, point[1]+t_size) ## rotate the T shape to always be normal to the edge theta = Geom.angleFromXaxis(line) lines = [leftPoint, rightPoint , upPoint, downPoint] lines = Geom.rotatePointList(lines, theta, point) Canvas.AddLine( [lines[0], lines[1]], LineWidth=4, LineColor="BLUE" ) Canvas.AddLine( [lines[2], lines[3]], LineWidth=4, LineColor="BLUE" )
def draw(self, Canvas, line): l_size = 8 / Canvas.Scale point = self.pos upPoint = (point[0], point[1]+ l_size) downPoint = (point[0], point[1] - l_size) rightPoint = (point[0] + l_size, point[1] - l_size) lines = [upPoint, downPoint, rightPoint] theta = Geom.angleFromXaxis(line) lines = Geom.rotatePointList(lines, theta, point) Canvas.AddLine( [lines[0], lines[1]], LineWidth=4, LineColor="BLUE" ) Canvas.AddLine( [lines[1], lines[2]], LineWidth=4, LineColor="BLUE" )
def draw(self, Canvas, line): c_w = 10 / Canvas.Scale c_h_long = 10 /Canvas.Scale c_h_short = 3 / Canvas.Scale point = self.pos leftPoint = (point[0]-c_w, point[1]) rightPoint = (point[0]+c_w, point[1]) def rightCompressor(l_point, r_point): upLeftPoint = (l_point[0], l_point[1]+c_h_long) downLeftPoint = (l_point[0], l_point[1]-c_h_long) upRightPoint = (r_point[0], r_point[1]+c_h_short) downRightPoint = (r_point[0], r_point[1]-c_h_short) return [upLeftPoint, downLeftPoint, downRightPoint, upRightPoint] def leftCompressor(l_point, r_point): upLeftPoint = (l_point[0], l_point[1]+c_h_short) downLeftPoint = (l_point[0], l_point[1]-c_h_short) upRightPoint = (r_point[0], r_point[1]+c_h_long) downRightPoint = (r_point[0], r_point[1]- c_h_long) return [upLeftPoint, downLeftPoint, downRightPoint, upRightPoint] ## find the change in x on the line to determine the ## direction of the edge delta_x = Geom.delta_x(*line) ## get the angle that the line makes with the x-axis theta = Geom.angleFromXaxis(line) ## if it's negative the direction in the x is right justified if delta_x < 0: ## so we construct a right justified shape compressor = rightCompressor(leftPoint, rightPoint) ## if it's positive the direction in the x is left justified elif delta_x > 0: ## so we construct a left justified shape compressor = leftCompressor(leftPoint, rightPoint) ## Uh Oh Vertical lines, now we have to think about the change in y elif delta_x == 0: ## the change in y delta_y = Geom.delta_y(*line) ## if it's positive then the direction in the y is up if delta_y < 0: ## since we will ultimately be rotating 90 degrees ## for a vertical line pointing up ## we want the shape to be right justified ## (think about it) compressor = rightCompressor(leftPoint, rightPoint) ##if it's negative then the direction in the y is down elif delta_y > 0: ## and we construct a left justified shape compressor = leftCompressor(leftPoint, rightPoint) ## if the delta y is also zero then our line is two of ## the same point and we have some bad input ## since this code is just for prototyping and fast development ## we will make due with a descriptive warning message printed ## to the console, and we'll make compressor right justified ## don't worry if this happens it will be obvious else: compressor = rightCompressor(leftPoint, rightPoint) ## and then we rotate it acordingly compressor = Geom.rotatePointList(compressor, theta, point) ## finally we draw this darned thing to the Canvas Canvas.AddPolygon( compressor, LineWidth=1, LineColor="BLUE", FillColor="BLUE", )