def update(dt):
global zpos, earth_rot, earth_orbit, moon_orbit
zpos *= 0.5**dt
# Update the solar system
earth_rot += tau * dt
moon_orbit += tau * dt / 28.0
earth_orbit += tau * dt / 365.25
# Apply the positions to the scene
earth.rotation = (math.degrees(earth_rot), 0, 1, 0)
moon.rotation = (math.degrees(moon_orbit) - 90, 0, 1, 0)
mx = MOON_DISTANCE * math.cos(-moon_orbit)
mz = MOON_DISTANCE * math.sin(-moon_orbit)
moon.pos = mx, 0, mz
sx = SUN_DISTANCE * math.cos(earth_orbit)
sz = SUN_DISTANCE * math.sin(earth_orbit)
sunlight.pos = sx, 0, sz
c.pos = v3((0, 3, zpos + 10))
def update(dt):
global camera_rot
camera_rot += 0.1 * dt
c.pos = v3((math.cos(camera_rot) * 15, 5, math.sin(camera_rot) * 15))
zpos = 10
camera_rot = 0
tau = 2 * math.pi
def update(dt):
global camera_rot
camera_rot += 0.1 * dt
c.pos = v3((math.cos(camera_rot) * 15, 5, math.sin(camera_rot) * 15))
c = Camera(pos=v3((0, 0, -20)), width=WIDTH, height=HEIGHT)
def on_draw():
scene.render(c)
if __name__ == '__main__':
from optparse import OptionParser
parser = OptionParser()
parser.add_option('-s',
'--screenshot',
metavar='FILE',
help='Write screenshot to FILE')
options, _ = parser.parse_args()
def test_airborne():
"""looking down on the point, -z, -y direction"""
root2 = math.sqrt(2)
camera = Camera(pos=v3(2, 10 * root2, 10 * root2), look_at=v3(2, 0, 0))
vec_eq(project(point, camera), v3(0, 0.5 * root2, 0.5 * root2 - 20))
def test_minusxaligned():
"""looking down the x axis in the +x direction"""
camera = Camera(pos=v3(-20, 0, 0))
vec_eq(project(point, camera), v3(0, 1, -22))
def test_xaligned():
"""looking down the x axis in the -x direction"""
camera = Camera(pos=v3(20, 0, 0))
vec_eq(project(point, camera), v3(0, 1, -18))
def test_zaligned():
"""looking down the z axis in the -z direction"""
camera = Camera(pos=v3(0, 0, 20))
vec_eq(project(point, camera), v3(2, 1, -20))
import math
from wasabisg.scenegraph import Matrix4, v3, Camera
def vec_eq(a, b):
"""Return True if vectors a and b are approximately equal."""
return (a - b).magnitude_squared() < 1e-6
point = v3(2, 1, 0)
def project(point, camera):
return camera.get_view_matrix() * point
def test_zaligned():
"""looking down the z axis in the -z direction"""
camera = Camera(pos=v3(0, 0, 20))
vec_eq(project(point, camera), v3(2, 1, -20))
def test_xaligned():
"""looking down the x axis in the -x direction"""
camera = Camera(pos=v3(20, 0, 0))
vec_eq(project(point, camera), v3(0, 1, -18))
def test_minusxaligned():
"""looking down the x axis in the +x direction"""
camera = Camera(pos=v3(-20, 0, 0))
robots.append(robot)
angle = 180
tau = 2 * math.pi
def update(dt):
global angle
angle += 90.0 * dt
for r in robots:
r.rotation = (angle, 0, 1, 0)
c = Camera(pos=v3((0, 5, -20)),
look_at=Point3(0, 5, 0),
width=WIDTH,
height=HEIGHT)
def on_draw():
window.clear()
scene.render(c)
if __name__ == '__main__':
from optparse import OptionParser
parser = OptionParser()
parser.add_option('-s',
'--screenshot',