使用 draw() 而不是 eventloop 时的 pyglet
pyglet when using draw() instead of eventloop
我正在尝试用 pyglet 画一个圆。但是当我使用 app.run() 循环的 draw() 函数而不是它时,它是不可见的。有什么建议我可以做什么?谢谢
from math import *
from pyglet.gl import *
window = pyglet.window.Window()
def makeCircle(x_pos, y_pos, radius, numPoints):
verts = []
glClear(pyglet.gl.GL_COLOR_BUFFER_BIT)
glColor3f(1,1,0)
for i in range(numPoints):
angle = radians(float(i)/numPoints * 360.0)
x = radius *cos(angle) + x_pos
y = radius *sin(angle) + y_pos
verts += [x,y]
circle = pyglet.graphics.vertex_list(numPoints, ('v2f', verts))
circle.draw(GL_LINE_LOOP)
input()
makeCircle(5,5, 100, 10)
您必须调用 来更新 window。
由于您没有设置投影矩阵,因此必须在标准化设备坐标中绘制几何图形,所有 3 个分量(x、y、z)都在 [-1, 1] 范围内。注意,pyglet 在应用程序启动时默认设置投影矩阵 pyglet.app.run()
.
调用window.flip()
并改变几何:
from math import *
from pyglet.gl import *
window = pyglet.window.Window()
def makeCircle(x_pos, y_pos, radius, numPoints):
verts = []
glClear(pyglet.gl.GL_COLOR_BUFFER_BIT)
glColor3f(1,1,0)
for i in range(numPoints):
angle = radians(float(i)/numPoints * 360.0)
x = radius *cos(angle) + x_pos
y = radius *sin(angle) + y_pos
verts += [x,y]
circle = pyglet.graphics.vertex_list(numPoints, ('v2f', verts))
circle.draw(GL_LINE_LOOP)
window.flip() # <--------
input()
makeCircle(0, 0, 0.5, 10) # <--------
或者,您可以通过 glOrtho
自行设置正交投影。例如:
from math import *
from pyglet.gl import *
window = pyglet.window.Window()
def makeCircle(x_pos, y_pos, radius, numPoints):
verts = []
glMatrixMode(GL_PROJECTION)
glOrtho(0, 640, 0, 480, -1, 1)
glMatrixMode(GL_MODELVIEW)
glClear(pyglet.gl.GL_COLOR_BUFFER_BIT)
glColor3f(1,1,0)
for i in range(numPoints):
angle = radians(float(i)/numPoints * 360.0)
x = radius *cos(angle) + x_pos
y = radius *sin(angle) + y_pos
verts += [x,y]
circle = pyglet.graphics.vertex_list(numPoints, ('v2f', verts))
circle.draw(GL_LINE_LOOP)
text = 'This is a test but it is not visible'
label = pyglet.text.Label(text, font_size=36,
x=10, y=10, anchor_x='left', anchor_y='bottom',
color=(255, 123, 255, 255))
label.draw()
window.flip()
input()
makeCircle(5,5, 100, 10)
我正在尝试用 pyglet 画一个圆。但是当我使用 app.run() 循环的 draw() 函数而不是它时,它是不可见的。有什么建议我可以做什么?谢谢
from math import *
from pyglet.gl import *
window = pyglet.window.Window()
def makeCircle(x_pos, y_pos, radius, numPoints):
verts = []
glClear(pyglet.gl.GL_COLOR_BUFFER_BIT)
glColor3f(1,1,0)
for i in range(numPoints):
angle = radians(float(i)/numPoints * 360.0)
x = radius *cos(angle) + x_pos
y = radius *sin(angle) + y_pos
verts += [x,y]
circle = pyglet.graphics.vertex_list(numPoints, ('v2f', verts))
circle.draw(GL_LINE_LOOP)
input()
makeCircle(5,5, 100, 10)
您必须调用
由于您没有设置投影矩阵,因此必须在标准化设备坐标中绘制几何图形,所有 3 个分量(x、y、z)都在 [-1, 1] 范围内。注意,pyglet 在应用程序启动时默认设置投影矩阵 pyglet.app.run()
.
调用window.flip()
并改变几何:
from math import *
from pyglet.gl import *
window = pyglet.window.Window()
def makeCircle(x_pos, y_pos, radius, numPoints):
verts = []
glClear(pyglet.gl.GL_COLOR_BUFFER_BIT)
glColor3f(1,1,0)
for i in range(numPoints):
angle = radians(float(i)/numPoints * 360.0)
x = radius *cos(angle) + x_pos
y = radius *sin(angle) + y_pos
verts += [x,y]
circle = pyglet.graphics.vertex_list(numPoints, ('v2f', verts))
circle.draw(GL_LINE_LOOP)
window.flip() # <--------
input()
makeCircle(0, 0, 0.5, 10) # <--------
或者,您可以通过 glOrtho
自行设置正交投影。例如:
from math import *
from pyglet.gl import *
window = pyglet.window.Window()
def makeCircle(x_pos, y_pos, radius, numPoints):
verts = []
glMatrixMode(GL_PROJECTION)
glOrtho(0, 640, 0, 480, -1, 1)
glMatrixMode(GL_MODELVIEW)
glClear(pyglet.gl.GL_COLOR_BUFFER_BIT)
glColor3f(1,1,0)
for i in range(numPoints):
angle = radians(float(i)/numPoints * 360.0)
x = radius *cos(angle) + x_pos
y = radius *sin(angle) + y_pos
verts += [x,y]
circle = pyglet.graphics.vertex_list(numPoints, ('v2f', verts))
circle.draw(GL_LINE_LOOP)
text = 'This is a test but it is not visible'
label = pyglet.text.Label(text, font_size=36,
x=10, y=10, anchor_x='left', anchor_y='bottom',
color=(255, 123, 255, 255))
label.draw()
window.flip()
input()
makeCircle(5,5, 100, 10)