my drawing in pygame is covered by something and I want to animate it what does not work

huangapple
go评论98阅读模式
英文:

my drawing in pygame is covered by something and I want to animate it what does not work

问题

我创建了一个函数，可以使用我的3D线条函数制作一个三维曲线（我知道可能已经有一个版本，但我想自己学习如何做）。在尝试对这条曲线进行控制旋转动画后，我只能看到它的一小部分，并且它根本不移动。

  1. import pygame
  2. from pygame.locals import *
  3. from math import sqrt, cos, sin, radians
  5. def draw_3d_lines(screen, color, points_list, distance=1):
  6.     for i in range(len(points_list) - 1):
  7.         x1 = points_list[i][0]
  8.         y1 = points_list[i][1]
  9.         z1 = points_list[i][2]
  11.         x2 = points_list[i + 1][0]
  12.         y2 = points_list[i + 1][1]
  13.         z2 = points_list[i + 1][2]
  15.         # Apply translation and scaling
  16.         x1t = int(x1 / distance + screen.get_width() / 2)
  17.         y1t = int(y1 / distance + screen.get_height() / 2)
  18.         x2t = int(x2 / distance + screen.get_width() / 2)
  19.         y2t = int(y2 / distance + screen.get_height() / 2)
  21.         a= pygame.draw.line(screen, color, (x1t, y1t), (x2t, y2t),10)
  22.         return(a)
  24. def rotate_3d_points(points_list, angle_x, angle_y, angle_z):
  25.     angle_x = radians(angle_x)
  26.     angle_y = radians(angle_y)
  27.     angle_z = radians(angle_z)
  29.     cos_angle_x = cos(angle_x)
  30.     sin_angle_x = sin(angle_x)
  31.     cos_angle_y = cos(angle_y)
  32.     sin_angle_y = sin(angle_y)
  33.     cos_angle_z = cos(angle_z)
  34.     sin_angle_z = sin(angle_z)
  36.     rotated_points = []
  37.     for point in points_list:
  38.         x = point[0]
  39.         y = point[1]
  40.         z = point[2]
  42.         # Apply rotation
  43.         x_rotated = x * cos_angle_y - z * sin_angle_y
  44.         y_rotated = y * cos_angle_x - z * sin_angle_x
  45.         z_rotated = x * sin_angle_y + z * cos_angle_y
  47.         x_final = y_rotated * sin_angle_z + x_rotated * cos_angle_z
  48.         y_final = y_rotated * cos_angle_z - x_rotated * sin_angle_z
  49.         z_final = z_rotated
  51.         rotated_points.append((x_final, y_final, z_final))
  53.     return rotated_points
  55. def make_3d_curve(starting_point, ending_point, curve_point, step=0.01):
  56.     t = 0
  57.     points = []
  59.     while t <= 1:
  60.         # Calculate current point on the curve
  61.         x = (1 - t) ** 2 * starting_point[0] + 2 * (1 - t) * t * curve_point[0] + t ** 2 * ending_point[0]
  62.         y = (1 - t) ** 2 * starting_point[1] + 2 * (1 - t) * t * curve_point[1] + t ** 2 * ending_point[1]
  63.         z = (1 - t) ** 2 * starting_point[2] + 2 * (1 - t) * t * curve_point[2] + t ** 2 * ending_point[2]
  64.         points.append((x, y, z))
  65.         t += step
  67.     # Draw the curve
  68.     return points
  70. # Example usage
  71. pygame.init()
  73. # Set up the screen
  74. width, height = 640, 480
  75. screen = pygame.display.set_mode((width, height))
  76. pygame.display.set_caption("3D Curve")
  78. # Starting point
  79. start = [-300, -200, 0]
  81. # Ending point
  82. end = [250, 100, 0]
  84. # Curve control point
  85. curve = [300, 100, 200]
  86. curve = make_3d_curve(start, end, curve)
  87. # Main game loop
  88. running = True
  89. clock = pygame.time.Clock()
  90. while running:
  91.     for event in pygame.event.get():
  92.         if event.type == QUIT:
  93.             running = False
  94.         if event.type == pygame.KEYDOWN:
  95.             if event.key == pygame.K_a:
  96.                 rotate_3d_points(curve, 0,1,0)
  97.             if event.key == pygame.K_d:
  98.                 rotate_3d_points(curve, 0,-1,0)
  99.             if event.key == pygame.K_w:
  100.                 rotate_3d_points(curve, 1,0,0)
  101.             if event.key == pygame.K_s:
  102.                 rotate_3d_points(curve, -1,0,0)
  103.             if event.key == pygame.K_q:
  104.                 rotate_3d_points(curve, 0,0,1)
  105.             if event.key == pygame.K_e:
  106.                 rotate_3d_points(curve, 0,0,-1)
  108.     screen.fill((0, 0, 0))  # Clear the screen
  109.     a = draw_3d_lines(screen, (0,255,0), curve)
  111.     pygame.display.flip()
  112.     clock.tick(60)
  114. pygame.quit()
英文:

I made a function so I can make a 3 dimensional curve witch uses my 3d line function(I know that there may be already a version of this, but I want to learn how to do it myself) after trying to animate an controlled rotation of this curve I can only see a small part of it and it does not move at all.

  1. import pygame
  2. from pygame.locals import *
  3. from math import sqrt, cos, sin, radians
  5. def draw_3d_lines(screen, color, points_list, distance=1):
  6.     for i in range(len(points_list) - 1):
  7.         x1 = points_list[i][0]
  8.         y1 = points_list[i][1]
  9.         z1 = points_list[i][2]
  11.         x2 = points_list[i + 1][0]
  12.         y2 = points_list[i + 1][1]
  13.         z2 = points_list[i + 1][2]
  15.         # Apply translation and scaling
  16.         x1t = int(x1 / distance + screen.get_width() / 2)
  17.         y1t = int(y1 / distance + screen.get_height() / 2)
  18.         x2t = int(x2 / distance + screen.get_width() / 2)
  19.         y2t = int(y2 / distance + screen.get_height() / 2)
  21.         a= pygame.draw.line(screen, color, (x1t, y1t), (x2t, y2t),10)
  22.         return(a)
  24. def rotate_3d_points(points_list, angle_x, angle_y, angle_z):
  25.     angle_x = radians(angle_x)
  26.     angle_y = radians(angle_y)
  27.     angle_z = radians(angle_z)
  29.     cos_angle_x = cos(angle_x)
  30.     sin_angle_x = sin(angle_x)
  31.     cos_angle_y = cos(angle_y)
  32.     sin_angle_y = sin(angle_y)
  33.     cos_angle_z = cos(angle_z)
  34.     sin_angle_z = sin(angle_z)
  36.     rotated_points = []
  37.     for point in points_list:
  38.         x = point[0]
  39.         y = point[1]
  40.         z = point[2]
  42.         # Apply rotation
  43.         x_rotated = x * cos_angle_y - z * sin_angle_y
  44.         y_rotated = y * cos_angle_x - z * sin_angle_x
  45.         z_rotated = x * sin_angle_y + z * cos_angle_y
  47.         x_final = y_rotated * sin_angle_z + x_rotated * cos_angle_z
  48.         y_final = y_rotated * cos_angle_z - x_rotated * sin_angle_z
  49.         z_final = z_rotated
  51.         rotated_points.append((x_final, y_final, z_final))
  53.     return rotated_points
  55. def make_3d_curve(starting_point, ending_point, curve_point, step=0.01):
  56.     t = 0
  57.     points = []
  59.     while t &lt;= 1:
  60.         # Calculate current point on the curve
  61.         x = (1 - t) ** 2 * starting_point[0] + 2 * (1 - t) * t * curve_point[0] + t ** 2 * ending_point[0]
  62.         y = (1 - t) ** 2 * starting_point[1] + 2 * (1 - t) * t * curve_point[1] + t ** 2 * ending_point[1]
  63.         z = (1 - t) ** 2 * starting_point[2] + 2 * (1 - t) * t * curve_point[2] + t ** 2 * ending_point[2]
  64.         points.append((x, y, z))
  65.         t += step
  67.     # Draw the curve
  68.     return(points)
  70. # Example usage
  71. pygame.init()
  73. # Set up the screen
  74. width, height = 640, 480
  75. screen = pygame.display.set_mode((width, height))
  76. pygame.display.set_caption(&quot;3D Curve&quot;)
  78. # Starting point
  79. start = [-300, -200, 0]
  81. # Ending point
  82. end = [250, 100, 0]
  84. # Curve control point
  85. curve = [300, 100, 200]
  86. curve = make_3d_curve(start, end, curve)
  87. # Main game loop
  88. running = True
  89. clock = pygame.time.Clock()
  90. while running:
  91.     for event in pygame.event.get():
  92.         if event.type == QUIT:
  93.             running = False
  94.         if event.type == pygame.KEYDOWN:
  95.             if event.key == pygame.K_a:
  96.                 rotate_3d_points(curve, 0,1,0)
  97.             if event.key == pygame.K_d:
  98.                 rotate_3d_points(curve, 0,-1,0)
  99.             if event.key == pygame.K_w:
  100.                 rotate_3d_points(curve, 1,0,0)
  101.             if event.key == pygame.K_s:
  102.                 rotate_3d_points(curve, -1,0,0)
  103.             if event.key == pygame.K_q:
  104.                 rotate_3d_points(curve, 0,0,1)
  105.             if event.key == pygame.K_e:
  106.                 rotate_3d_points(curve, 0,0,-1)
  108.     screen.fill((0, 0, 0))  # Clear the screen
  109.     a = draw_3d_lines(screen, (0,255,0), curve)
  111.     pygame.display.flip()
  112.     clock.tick(60)
  114. pygame.quit()

I added the key event part and afterwards i moved the fill around but always got a nearly black screen what did not happen before.

答案1

得分: 1

make_3d_curve和rotate_3d_points不会更新列表中的点，而是返回一个新的点列表。您需要将返回值赋回给变量。例如：

<s>rotate_3d_points(curve, 0,1,0)</s>。

  1. curve = rotate_3d_points(curve, 0, 1, 0)
英文:

make_3d_curve and rotate_3d_points don't update the points in the list, but return a new list of points. You need to assign the return value back to the variable. e.g.:

<s>rotate_3d_points(curve, 0,1,0)</s>.

  1. curve = rotate_3d_points(curve, 0, 1, 0)

huangapple
  • 本文由 发表于 2023年7月27日 19:10:14
  • 转载请务必保留本文链接：https://go.coder-hub.com/76779155.html
  • pygame
  • python
匿名

发表评论

匿名网友

:?: :razz: :sad: :evil: :!: :smile: :oops: :grin: :eek: :shock: :???: :cool: :lol: :mad: :twisted: :roll: :wink: :idea: :arrow: :neutral: :cry: :mrgreen:

确定