fixes during playtest

trap/animation_renderer.py

@@ -2,6 +2,7 @@
 from __future__ import annotations
 
 import time
+import tracemalloc
 import ffmpeg
 from argparse import Namespace
 import datetime
@@ -26,6 +27,7 @@ import json
 
 from trap.frame_emitter import DetectionState, Frame, Track
 from trap.preview_renderer import DrawnTrack, PROJECTION_IMG, PROJECTION_MAP
+from trap.utils import convert_world_space_to_img_space, display_top
 
 
 logger = logging.getLogger("trap.renderer")
@@ -35,6 +37,9 @@ COLOR_PRIMARY = (255,255,255, 255)
 
 class AnimationRenderer:
     def __init__(self, config: Namespace, is_running: BaseEvent):
+
+
+        tracemalloc.start()
         self.config = config
         self.is_running = is_running
 
@@ -62,7 +67,9 @@ class AnimationRenderer:
         # self.out = cv2.VideoWriter(str(filename), fourcc, 23.97, (1280,720))
         self.fps = 60
         self.frame_size = (self.config.camera.w,self.config.camera.h)
-        self.hide_stats = False
+        self.hide_stats = self.config.render_hide_stats
+        self.hide_bg = True
+        self.pause = False
         self.out_writer = None # self.start_writer() if self.config.render_file else None
         self.streaming_process = self.start_streaming() if self.config.render_url else None
 
@@ -78,7 +85,8 @@ class AnimationRenderer:
         # , fullscreen=self.config.render_window
         
         display = pyglet.canvas.get_display()
-        screen = display.get_screens()[0]
+        idx = -1 if self.config.render_window else 0
+        screen = display.get_screens()[idx]
         print(display.get_screens())
         
         if self.streaming_process is not None:
@@ -88,6 +96,7 @@ class AnimationRenderer:
         self.window.set_handler('on_draw', self.on_draw)
         self.window.set_handler('on_refresh', self.on_refresh)
         self.window.set_handler('on_close', self.on_close)
+        self.window.set_handler('on_key_press', self.on_key_press)
 
         # don't know why, but importing this before window leads to "x connection to :1 broken (explicit kill or server shutdown)"
         from pyglet_cornerpin import PygletCornerPin
@@ -99,8 +108,11 @@ class AnimationRenderer:
         self.pins = PygletCornerPin(
             self.window,
             source_points=[[540, 670-360], [1380,670-360], [540,760-360], [1380,760-360]], 
-            corners=[[540, 670-360], [1380,670-360], [540,760-360], [1380,760-360]], 
+            # corners=[[540, 670-360], [1380,670-360], [540,760-360], [1380,760-360]],  # original test: short throw?
-            # corners=[[471, 304], [1797, 376], [467, 387], [1792, 484]]
+            # corners=[[396, 442], [1644, 734], [350, 516], [1572, 796]], # beamer downstairs
+            # corners=[[270, 452], [1698, 784], [314, 568], [1572, 860]], # ??
+            # corners=[[471, 304], [1797, 376], [467, 387], [1792, 484]] # ??
+            # corners=[[576, 706], [1790, 696], [588, 794], [1728, 796]], # beamer boven
             )
         self.window.push_handlers(self.pins)
 
@@ -123,16 +135,20 @@ class AnimationRenderer:
         self.batch_bg = pyglet.graphics.Batch()
         self.batch_overlay = pyglet.graphics.Batch()
         self.batch_anim = pyglet.graphics.Batch()
+        self.batch_debug = pyglet.graphics.Batch()
 
-        if self.config.render_debug_shapes:
+        # if self.config.render_debug_shapes:
-            self.debug_lines = [
+        self.render_debug_shapes = self.config.render_debug_shapes
-                pyglet.shapes.Line(1370, self.config.camera.h-360, 1380, 670-360, 2, COLOR_PRIMARY, batch=self.batch_overlay),#v
+        self.render_lines = True
-                pyglet.shapes.Line(0, 660-360, 1380, 670-360, 2, COLOR_PRIMARY, batch=self.batch_overlay), #h
-                pyglet.shapes.Line(1140, 760-360, 1140, 675-360, 2, COLOR_PRIMARY, batch=self.batch_overlay), #h
-                pyglet.shapes.Line(540, 760-360,540, 675-360, 2, COLOR_PRIMARY, batch=self.batch_overlay), #v
-                pyglet.shapes.Line(0, 770-360, 1380, 770-360, 2, COLOR_PRIMARY, batch=self.batch_overlay), #h
         
-            ]
+        self.debug_lines = [
+            pyglet.shapes.Line(1370, self.config.camera.h-360, 1380, 670-360, 2, COLOR_PRIMARY, batch=self.batch_debug),#v
+            pyglet.shapes.Line(0, 660-360, 1380, 670-360, 2, COLOR_PRIMARY, batch=self.batch_debug), #h
+            pyglet.shapes.Line(1140, 760-360, 1140, 675-360, 2, COLOR_PRIMARY, batch=self.batch_debug), #h
+            pyglet.shapes.Line(540, 760-360,540, 675-360, 2, COLOR_PRIMARY, batch=self.batch_debug), #v
+            pyglet.shapes.Line(0, 770-360, 1380, 770-360, 2, COLOR_PRIMARY, batch=self.batch_debug), #h
+
+        ]
 
         self.debug_points = []
         # print(self.config.debug_points_file)
@@ -149,7 +165,7 @@ class AnimationRenderer:
                     dst_img_points = np.reshape(dst_img_points, (dst_img_points.shape[0], 2))
             
                 self.debug_points = [
-                    pyglet.shapes.Circle(p[0], self.window.height - p[1], 3, color=(255,0,0,255), batch=self.batch_overlay) for p in dst_img_points
+                    pyglet.shapes.Circle(p[0], self.window.height - p[1], 3, color=(255,0,0,255), batch=self.batch_debug) for p in dst_img_points
                 ]
                 
         
@@ -263,12 +279,18 @@ class AnimationRenderer:
             self.labels['frame_time'].text = f"{self.frame.time - self.first_time: >10.2f}s"
             self.labels['frame_latency'].text = f"{self.frame.time - time.time():.2f}s"
 
-        if self.tracker_frame:
+            if self.frame.time - self.first_time > 30 and (not hasattr(self, 'has_snap') or self.has_snap == False):
+                snapshot = tracemalloc.take_snapshot()
+                display_top(snapshot, 'traceback', 15)
+                tracemalloc.stop()
+                self.has_snap = True
+        
+        if self.tracker_frame and self.frame:
             self.labels['tracker_idx'].text = f"{self.tracker_frame.index - self.frame.index}"
             self.labels['tracker_time'].text = f"{self.tracker_frame.time - time.time():.3f}s"
             self.labels['track_len'].text = f"{len(self.tracker_frame.tracks)} tracks"
         
-        if self.prediction_frame:
+        if self.prediction_frame and self.frame:
             self.labels['pred_idx'].text = f"{self.prediction_frame.index - self.frame.index}"
             self.labels['pred_time'].text = f"{self.prediction_frame.time - time.time():.3f}s"
             # self.labels['track_len'].text = f"{len(self.prediction_frame.tracks)} tracks"
@@ -297,6 +319,9 @@ class AnimationRenderer:
         
 
     def check_frames(self, dt):
+        if self.pause:
+            return
+        
         new_tracks = False
         try:
             self.frame: Frame = self.frame_sock.recv_pyobj(zmq.NOBLOCK)
@@ -305,15 +330,20 @@ class AnimationRenderer:
             img = self.frame.img
             # newcameramtx, roi = cv2.getOptimalNewCameraMatrix(self.config.camera.mtx, self.config.camera.dist, (self.frame.img.shape[1], self.frame.img.shape[0]), 1, (self.frame.img.shape[1], self.frame.img.shape[0]))
             img = cv2.undistort(img, self.config.camera.mtx, self.config.camera.dist, None, self.config.camera.newcameramtx)
-            img = cv2.warpPerspective(img, self.config.camera.H, (self.config.camera.w, self.config.camera.h))
+            img = cv2.warpPerspective(img, convert_world_space_to_img_space(self.config.camera.H), (self.config.camera.w, self.config.camera.h))
             # img = cv2.GaussianBlur(img, (15, 15), 0)
             img = cv2.flip(cv2.cvtColor(img, cv2.COLOR_BGR2RGB), 0)
             img = pyglet.image.ImageData(self.frame_size[0], self.frame_size[1], 'RGB', img.tobytes())
             # don't draw in batch, so that it is the background
+            if hasattr(self, 'video_sprite') and self.video_sprite:
+                self.video_sprite.delete()
+            self.frame.img = None
+                
             self.video_sprite = pyglet.sprite.Sprite(img=img, batch=self.batch_bg)
             # transform to flipped coordinate system for pyglet
             self.video_sprite.y = self.window.height - self.video_sprite.height
-            self.video_sprite.opacity = 70
+            # self.frame.img = np.array([]) # clearing memory?
+            # self.video_sprite.opacity = 70
         except zmq.ZMQError as e:
             # idx = frame.index if frame else "NONE"
             # logger.debug(f"reuse video frame {idx}")
@@ -370,11 +400,20 @@ class AnimationRenderer:
             self.window.set_fullscreen(not self.window.fullscreen)
         if symbol == ord('h'):
             self.hide_stats = not self.hide_stats
+        if symbol == ord('d'):
+            self.render_debug_shapes = not self.render_debug_shapes
+        if symbol == ord('p'):
+            self.pause = not self.pause
+        if symbol == ord('b'):
+            self.hide_bg = not self.hide_bg
+        if symbol == ord('l'):
+            self.render_lines = not self.render_lines
     
     def check_running(self, dt):
         if not self.is_running.is_set():
             self.window.close()
             self.event_loop.exit()
+            print('quit animation renderer')
     
     def on_close(self):
         self.is_running.clear()
@@ -389,6 +428,8 @@ class AnimationRenderer:
 
         self.refresh_labels(dt)
 
+        
+
         # self.shape1 = shapes.Circle(700, 150, 100, color=(50, 0, 30), batch=self.batch_anim)
         # self.shape3 = shapes.Circle(800, 150, 100, color=(100, 225, 30), batch=self.batch_anim)
         pass
@@ -396,24 +437,29 @@ class AnimationRenderer:
     def on_draw(self):
         self.window.clear()
 
-        self.batch_bg.draw()
+        if not self.hide_bg:
+            self.batch_bg.draw()
 
-        for track in self.drawn_tracks.values():
+        if self.render_debug_shapes:
-            for shape in track.shapes:
+            self.batch_debug.draw()
-                shape.draw() # for some reason the batches don't work
-        for track in self.drawn_tracks.values():
-            for shapes in track.pred_shapes:
-                for shape in shapes:
-                    shape.draw()
-        # self.batch_anim.draw()
-        self.batch_overlay.draw()
-
-        if self.config.render_debug_shapes:
             self.pins.draw()
 
-        # pyglet.graphics.draw(3, pyglet.gl.GL_LINE, ("v2i", (100,200, 600,800)), ('c3B', (255,255,255, 255,255,255)))
+        if self.render_lines:
+            for track in self.drawn_tracks.values():
+                for shape in track.shapes:
+                    shape.draw() # for some reason the batches don't work
+            for track in self.drawn_tracks.values():
+                for shapes in track.pred_shapes:
+                    for shape in shapes:
+                        shape.draw()
+            # self.batch_anim.draw()
+            
+
+
+            # pyglet.graphics.draw(3, pyglet.gl.GL_LINE, ("v2i", (100,200, 600,800)), ('c3B', (255,255,255, 255,255,255)))
 
         if not self.hide_stats:
+            self.batch_overlay.draw()
             self.fps_display.draw()
 
         # if streaming, capture buffer and send
@@ -499,6 +545,7 @@ class AnimationRenderer:
         #         cv2.waitKey(1)
         logger.info('Stopping')
         logger.info(f'used corner pins {self.pins.pin_positions}')
+        print(self.pins.pin_positions)
 
 
         # if i>2:

trap/config.py

@@ -342,6 +342,9 @@ render_parser.add_argument("--render-animation",
 render_parser.add_argument("--render-debug-shapes",
                     help="Lines and points for debugging/mapping",
                     action='store_true')
+render_parser.add_argument("--render-hide-stats",
+                    help="Default toggle to hide (switch with 'h')",
+                    action='store_true')
 render_parser.add_argument("--full-screen",
                     help="Set Window full screen",
                     action='store_true')

trap/cv_renderer.py

@@ -342,7 +342,9 @@ class CvRenderer:
         i=0
         first_time = None
 
-        cv2.namedWindow("frame", cv2.WND_PROP_FULLSCREEN)
+        cv2.namedWindow("frame", cv2.WINDOW_NORMAL)
+        # https://gist.github.com/ronekko/dc3747211543165108b11073f929b85e
+        cv2.moveWindow("frame", 1920, -1)
         cv2.setWindowProperty("frame",cv2.WND_PROP_FULLSCREEN,cv2.WINDOW_FULLSCREEN)
 
         while self.is_running.is_set():
@@ -467,8 +469,8 @@ def decorate_frame(frame: Frame, tracker_frame: Frame, prediction_frame: Frame,
     # Fill image with red color(set each pixel to red)
     overlay[:] = (0, 0, 0)
 
-    img = cv2.addWeighted(dst_img, .2, overlay, .3, 0)
+    # img = cv2.addWeighted(dst_img, .2, overlay, .3, 0)
-    # img = frame.img.copy()
+    img = dst_img.copy()
 
     # all not working:
     # if i == 1:
@@ -506,13 +508,14 @@ def decorate_frame(frame: Frame, tracker_frame: Frame, prediction_frame: Frame,
        
     cv2.putText(img, f"{frame.index:06d}", (20,17), cv2.FONT_HERSHEY_PLAIN, 1, base_color, 1)
     cv2.putText(img, f"{frame.time - first_time: >10.2f}s", (150,17), cv2.FONT_HERSHEY_PLAIN, 1, base_color, 1)
+    cv2.putText(img, f"{frame.time - time.time():.2f}s", (250,17), cv2.FONT_HERSHEY_PLAIN, 1, base_color, 1)
 
     if prediction_frame:
         # render Δt and Δ frames
         cv2.putText(img, f"{tracker_frame.index - frame.index}", (90,17), cv2.FONT_HERSHEY_PLAIN, 1, tracker_color, 1)
         cv2.putText(img, f"{prediction_frame.index - frame.index}", (120,17), cv2.FONT_HERSHEY_PLAIN, 1, predictor_color, 1)
-        cv2.putText(img, f"{tracker_frame.time - time.time():.2f}s", (230,17), cv2.FONT_HERSHEY_PLAIN, 1, tracker_color, 1)
+        cv2.putText(img, f"{tracker_frame.time - time.time():.2f}s", (310,17), cv2.FONT_HERSHEY_PLAIN, 1, tracker_color, 1)
-        cv2.putText(img, f"{prediction_frame.time - time.time():.2f}s", (290,17), cv2.FONT_HERSHEY_PLAIN, 1, predictor_color, 1)
+        cv2.putText(img, f"{prediction_frame.time - time.time():.2f}s", (380,17), cv2.FONT_HERSHEY_PLAIN, 1, predictor_color, 1)
         cv2.putText(img, f"{len(tracker_frame.tracks)} tracks", (620,17), cv2.FONT_HERSHEY_PLAIN, 1, base_color, 1)
         cv2.putText(img, f"h: {np.average([len(t.history or []) for t in prediction_frame.tracks.values()]):.2f}", (700,17),  cv2.FONT_HERSHEY_PLAIN, 1, tracker_color, 1)
         cv2.putText(img, f"ph: {np.average([len(t.predictor_history or []) for t in prediction_frame.tracks.values()]):.2f}", (780,17),  cv2.FONT_HERSHEY_PLAIN, 1, predictor_color, 1)

trap/preview_renderer.py

@@ -87,7 +87,7 @@ class DrawnTrack:
 
         self.track = track
         # self.H = H 
-        self.coords = [d.get_foot_coords() for d in track.history] if self.draw_projection == PROJECTION_IMG else track.get_projected_history(self.H, self.camera)
+        self.coords = [d.get_foot_coords() for d in track.history] if self.draw_projection == PROJECTION_IMG else track.get_projected_history(None, self.camera)
 
         # perhaps only do in constructor:
         self.inv_H = np.linalg.pinv(self.H)
@@ -125,8 +125,11 @@ class DrawnTrack:
 
         # 1. track history
         for i, pos in enumerate(self.drawn_positions):
-            self.drawn_positions[i][0] = int_or_not(exponentialDecay(self.drawn_positions[i][0], self.coords[i][0], 16, dt))
+            self.drawn_positions[i][0] = self.coords[i][0]
-            self.drawn_positions[i][1] = int_or_not(exponentialDecay(self.drawn_positions[i][1], self.coords[i][1], 16, dt))
+            self.drawn_positions[i][1] = self.coords[i][1]
+            # self.drawn_positions[i][0] = int_or_not(exponentialDecay(self.drawn_positions[i][0], self.coords[i][0], 16, dt))
+            # self.drawn_positions[i][1] = int_or_not(exponentialDecay(self.drawn_positions[i][1], self.coords[i][1], 16, dt))
+            # print(self.drawn_positions)
 
         if len(self.coords) > len(self.drawn_positions):
             self.drawn_positions.extend(self.coords[len(self.drawn_positions):])
@@ -172,7 +175,7 @@ class DrawnTrack:
 
     def update_shapes(self, dt):
 
-        drawn_positions = convert_world_points_to_img_points(self.drawn_positions)
+        drawn_positions = convert_world_points_to_img_points(self.coords[:500]) # TODO)) Glitch in self.drawn_positions, now also capped
         drawn_pred_history = convert_world_points_to_img_points(self.drawn_pred_history)
         drawn_predictions = [convert_world_points_to_img_points(p) for p in self.drawn_predictions]
         # positions = convert_world_points_to_img_points(self.drawn_predictions)
@@ -185,6 +188,9 @@ class DrawnTrack:
             self.shapes = self.shapes[:len(drawn_positions)]
 
         # for i, pos in drawn_positions.enumerate():
+        draw_dot = False # if False, draw line
+        for_laser = True
+        
         if True:
             for ci in range(1, len(drawn_positions)):
                 x, y = [int(p) for p in drawn_positions[ci-1]]
@@ -196,28 +202,33 @@ class DrawnTrack:
 
                 if ci >= len(self.shapes):
                 # TODO: add color2
-                    # line = self.renderer.gradientLine(x, y, x2, y2, 3, color, color, batch=self.renderer.batch_anim)
+                    if draw_dot:
-                    line = pyglet.shapes.Arc(x2, y2, 10, thickness=2, color=color, batch=self.renderer.batch_anim)
+                        line = pyglet.shapes.Arc(x2, y2, 10, thickness=2, color=color, batch=self.renderer.batch_anim)
-                    line.opacity = 20
+                    else:
+                        line = self.renderer.gradientLine(x, y, x2, y2, 3, color, color, batch=self.renderer.batch_anim)
+                    line.opacity = 20 if not for_laser else 255
                     self.shapes.append(line)
                     
                 else:
                     line = self.shapes[ci-1]
                     line.x, line.y = x, y
-                    # line.x2, line.y2 = x2, y2
+                    if draw_dot:
-                    line.radius = int(exponentialDecay(line.radius, 1.5, 3, dt))
+                        line.radius = int(exponentialDecay(line.radius, 1.5, 3, dt))
+                    else:
+                        line.x2, line.y2 = x2, y2
                     line.color = color
-                    line.opacity = int(exponentialDecay(line.opacity, 180, 8, dt))
+                    if not for_laser:
+                        line.opacity = int(exponentialDecay(line.opacity, 180, 8, dt))
 
         # TODO: basically a duplication of the above,  do this smarter?
         # TODO: add intermediate segment
         color = colorset[self.track_id % len(colorset)]
 
-        if len(self.pred_history_shapes) > len(drawn_pred_history):
+        if False:
-            self.pred_history_shapes = self.pred_history_shapes[:len(drawn_pred_history)]
+            if len(self.pred_history_shapes) > len(drawn_pred_history):
+                self.pred_history_shapes = self.pred_history_shapes[:len(drawn_pred_history)]
 
         # for i, pos in drawn_pred_history.enumerate():
-        if False:
             for ci in range(1, len(drawn_pred_history)):
                 x, y = [int(p) for p in drawn_pred_history[ci-1]]
                 x2, y2 = [int(p) for p in drawn_pred_history[ci]]
@@ -239,48 +250,48 @@ class DrawnTrack:
                     line.color = color
                     line.opacity = int(exponentialDecay(line.opacity, 180, 8, dt))
     
+        if True:
+            for a, drawn_prediction in enumerate(drawn_predictions):
+                if len(self.pred_shapes) <= a:
+                    self.pred_shapes.append([])
 
-        for a, drawn_prediction in enumerate(drawn_predictions):
+                if len(self.pred_shapes[a]) > (len(drawn_prediction) +1):
-            if len(self.pred_shapes) <= a:
+                    self.pred_shapes[a] = self.pred_shapes[a][:len(drawn_prediction)]
-                self.pred_shapes.append([])
 
-            if len(self.pred_shapes[a]) > (len(drawn_prediction) +1):
+                # for i, pos in drawn_predictions.enumerate():
-                self.pred_shapes[a] = self.pred_shapes[a][:len(drawn_prediction)]
+                for ci in range(0, len(drawn_prediction)):
-
+                    if ci == 0:
-            # for i, pos in drawn_predictions.enumerate():
+                        continue
-            for ci in range(0, len(drawn_prediction)):
+                        # x, y = [int(p) for p in drawn_positions[-1]]
-                if ci == 0:
-                    continue
-                    # x, y = [int(p) for p in drawn_positions[-1]]
-                else:
-                    x, y = [int(p) for p in drawn_prediction[ci-1]]
-
-                x2, y2 = [int(p) for p in drawn_prediction[ci]]
-
-                y, y2 = self.renderer.window.height - y, self.renderer.window.height - y2
-                # color = [255,0,0]
-                # print(x,y,x2,y2,color)
-
-                if ci >= len(self.pred_shapes[a]):
-                # TODO: add color2
-                    # line = self.renderer.gradientLine(x, y, x2, y2, 3, color, color, batch=self.renderer.batch_anim)
-                    line = pyglet.shapes.Line(x,y ,x2, y2, 1.5, color, batch=self.renderer.batch_anim)
-                    # line = pyglet.shapes.Arc(x,y ,1.5, thickness=1.5, color=color, batch=self.renderer.batch_anim)
-                    line.opacity = 5
-                    self.pred_shapes[a].append(line)
-                    
-                else:
-                    line = self.pred_shapes[a][ci-1]
-                    line.x, line.y = x, y
-                    line.x2, line.y2 = x2, y2
-                    line.color = color
-                    decay = (16/ci) if ci else 16
-                    half = len(drawn_prediction) / 2
-                    if ci < half:
-                        target_opacity = 60
                     else:
-                        target_opacity = (1 - ((ci - half) / half)) * 60
+                        x, y = [int(p) for p in drawn_prediction[ci-1]]
-                    line.opacity = int(exponentialDecay(line.opacity, target_opacity, decay, dt))
+
+                    x2, y2 = [int(p) for p in drawn_prediction[ci]]
+
+                    y, y2 = self.renderer.window.height - y, self.renderer.window.height - y2
+                    # color = [255,0,0]
+                    # print(x,y,x2,y2,color)
+
+                    if ci >= len(self.pred_shapes[a]):
+                    # TODO: add color2
+                        # line = self.renderer.gradientLine(x, y, x2, y2, 3, color, color, batch=self.renderer.batch_anim)
+                        line = pyglet.shapes.Line(x,y ,x2, y2, 1.5, color, batch=self.renderer.batch_anim)
+                        # line = pyglet.shapes.Arc(x,y ,1.5, thickness=1.5, color=color, batch=self.renderer.batch_anim)
+                        line.opacity = 5
+                        self.pred_shapes[a].append(line)
+                        
+                    else:
+                        line = self.pred_shapes[a][ci-1]
+                        line.x, line.y = x, y
+                        line.x2, line.y2 = x2, y2
+                        line.color = color
+                        decay = (16/ci) if ci else 16
+                        half = len(drawn_prediction) / 2
+                        if ci < half:
+                            target_opacity = 60
+                        else:
+                            target_opacity = (1 - ((ci - half) / half)) * 60
+                        line.opacity = int(exponentialDecay(line.opacity, target_opacity, decay, dt))
         
 
 class FrameWriter:

trap/utils.py

@@ -1,4 +1,7 @@
 # lerp & inverse lerp from https://gist.github.com/laundmo/b224b1f4c8ef6ca5fe47e132c8deab56
+import linecache
+import os
+import tracemalloc
 from typing import Iterable
 import cv2
 import numpy as np
@@ -41,3 +44,28 @@ def convert_world_points_to_img_points(points: Iterable):
     if isinstance(points, np.ndarray):
         return np.array(points) * 100
     return [[p[0]*100, p[1]*100] for p in points]
+
+def display_top(snapshot: tracemalloc.Snapshot, key_type='lineno', limit=5):
+    snapshot = snapshot.filter_traces((
+        tracemalloc.Filter(False, "<frozen importlib._bootstrap>"),
+        tracemalloc.Filter(False, "<unknown>"),
+    ))
+    top_stats = snapshot.statistics(key_type)
+
+    print("Top %s lines" % limit)
+    for index, stat in enumerate(top_stats[:limit], 1):
+        frame = stat.traceback[0]
+        # replace "/path/to/module/file.py" with "module/file.py"
+        filename = os.sep.join(frame.filename.split(os.sep)[-2:])
+        print("#%s: %s:%s: %.1f KiB"
+              % (index, filename, frame.lineno, stat.size / 1024))
+        line = linecache.getline(frame.filename, frame.lineno).strip()
+        if line:
+            print('    %s' % line)
+
+    other = top_stats[limit:]
+    if other:
+        size = sum(stat.size for stat in other)
+        print("%s other: %.1f KiB" % (len(other), size / 1024))
+    total = sum(stat.size for stat in top_stats)
+    print("Total allocated size: %.1f KiB" % (total / 1024))