def test_normalize(self):
vec1 = Vector2f(0.0, 0.0)
vec2 = normalize(vec1)
self.assertEqual(vec1.x, vec2.x, "Normalized zerovector x failed")
self.assertEqual(vec1.y, vec2.y, "Normalized zerovector y failed")
vec1 = Vector2f(1.0, 0.0)
vec2 = normalize(vec1)
self.assertEqual(vec1.x, vec2.x, "Normalized (1.0, 0.0) x failed")
self.assertEqual(vec1.y, vec2.y, "Normalized (1.0, 0.0) y failed")
vec1 = Vector2f(0.0, 1.0)
vec2 = normalize(vec1)
self.assertEqual(vec1.x, vec2.x, "Normalized (0.0, 1.0) x failed")
self.assertEqual(vec1.y, vec2.y, "Normalized (0.0, 1.0) y failed")
vec1 = Vector2f(1.23122, 0.23342)
vec2 = normalize(vec1)
self.assertEqual(round(vec2.x, 5), 0.98250, "Normalized l>1 x failed")
self.assertEqual(round(vec2.y, 5), 0.18627, "Normalized l>1 y failed")
self.assertEqual(round(vec1.x, 5), 1.23122,
"Original vector was changed")
self.assertEqual(round(vec1.y, 5), 0.23342,
"Original vector was changed")
vec1 = Vector2f(0.73122, 0.23342)
vec2 = normalize(vec1)
self.assertEqual(round(vec2.x, 5), 0.95264, "Normalized l<1 x failed")
self.assertEqual(round(vec2.y, 5), 0.30410, "Normalized l<1 y failed")
def test_vec_trunc(self):
vec1 = Vector2f(0.0, 0.0)
vec1.trunc(2)
self.assertEqual(vec1.len(), 0.0, "Zerovector failed")
vec1 = Vector2f(1.0, 1.0)
vec1.trunc(2)
self.assertEqual(vec1.len(), sqrt(2), "Shorter vector failed")
vec1 = Vector2f(1.0, 1.0)
vec1.trunc(sqrt(2))
self.assertEqual(vec1.len(), sqrt(2), "Same length vector failed")
vec1 = Vector2f(2.0, 2.0)
vec1.trunc(2)
self.assertEqual(round(vec1.len(), 5), 2, "Longer vector failed")
def __init__(self, leader, params, gParams, grid):
self.params = params
self.gParams = gParams
self.grid = grid
self.pos = Vector2f(random.random() * 1024, random.random() * 768)
self.loc = Vector2f(
floor(self.pos.x / 32) + 1,
floor(self.pos.y / 32) + 1)
self.grid.insert(self, self.loc.x, self.loc.y)
self.repulsionF = Vector2f(0.0, 0.0)
self.v = Vector2f(0.0001, 0.0)
self.orientation = 0.0
self.leader = leader
def __init__(self, params, gParams):
self.params = params
self.gParams = gParams
self.pos = Vector2f(random.random() * 1024, random.random() * 768)
self.v = Vector2f(0.0000001, 0.0)
self.orientation = 0.0
self.cDist = 0.8
self.cRad = 0.8
self.wAngle = 0.0
self.wChange = 0.5
self.target = Vector2f(0.0, 0.0)
self.controlled = False
self.seeking = False
random.seed(100)
def test_div(self):
vec1 = Vector2f(1.2543, 1.2432)
num = 2
vecResult = vec1 / num
self.assertEqual(vecResult.x, 1.2543 / num,
"Division with positive number failed")
self.assertEqual(vecResult.y, 1.2432 / num,
"Division with positive number failed")
vec1 = Vector2f(1.2543, 1.2432)
num = -2
vecResult = vec1 / num
self.assertEqual(vecResult.x, 1.2543 / num,
"Division with negative number failed")
self.assertEqual(vecResult.y, 1.2432 / num,
"Division with negative number failed")
def test_rotate(self):
vec1 = Vector2f(1.0, 0.0)
vec1.rotate(0)
self.assertEqual(vec1.angle(), 0, "0 failed")
vec1 = Vector2f(1.0, 0.0)
vec1.rotate(pi / 4)
self.assertEqual(round(vec1.angle(), 5), round(pi / 4, 5),
"pi/4 failed")
vec1 = Vector2f(1.0, 0.0)
vec1.rotate(0.56453)
self.assertEqual(round(vec1.angle(), 5), 0.56453, "0.56453 failed")
vec1 = Vector2f(1.0, 0.0)
vec1.rotate(-pi / 4)
self.assertEqual(round(vec1.angle(), 5), round(7 * pi / 4, 5),
"-pi/4 failed")
def test_trunc(self):
vec1 = Vector2f(0.0, 0.0)
vec2 = trunc(vec1, 2)
self.assertEqual(vec1.len(), vec2.len(), "Zerovector failed")
vec1 = Vector2f(1.0, 1.0)
vec2 = trunc(vec1, 2)
self.assertEqual(vec1.len(), vec2.len(), "Shorter vector failed")
vec1 = Vector2f(1.0, 1.0)
vec2 = trunc(vec1, sqrt(2))
self.assertEqual(vec1.len(), vec2.len(), "Same length vector failed")
vec1 = Vector2f(2.0, 2.0)
vec2 = trunc(vec1, 2)
self.assertEqual(round(vec2.len(), 5), 2, "Longer vector failed")
self.assertEqual(round(vec1.len(), 5), round(sqrt(8), 5),
"Original vector was changed")
def move(self):
# Get target from behind the leader
target = self.leader.getPos() - normalize(
self.leader.getV()) * self.params.followDist
# Calculate desired direction
steer = trunc(target - self.pos, self.params.maxF)
# Truncate final steering vector and convert to acceleration
steer = trunc(steer + self.repulsionF, self.params.maxF)
acc = steer / self.params.mass * self.gParams.speed
# Truncate final speed, slow down if necessary
self.v = trunc(self.v + acc, self.params.maxV)
dist = distance(self.pos, target)
if dist < self.params.slowingD:
self.v *= dist / self.params.slowingD
# Calculate new position
self.pos += self.v * self.gParams.speed
# Update grid if necessary
newLoc = Vector2f(
floor(self.pos.x / 32) + 1,
floor(self.pos.y / 32) + 1)
if newLoc.x != self.loc.x or newLoc.y != self.loc.y:
self.grid.remove(self, self.loc.x, self.loc.y)
self.loc = newLoc
self.grid.insert(self, self.loc.x, self.loc.y)
# Set current angle for drawing
self.orientation = self.v.angle() * 180 / pi
def setLeaderTarget(self, target):
# Calculate simulation coordinates from click and set leader target
vecTarget = Vector2f(target.x(), target.y())
vecTarget.x -= 16
vecTarget.y = 768 - (vecTarget.y - 23)
if vecTarget.x > 0 and vecTarget.x < 1024 and vecTarget.y > 0 and vecTarget.y < 768:
self.leader.goTo(vecTarget)
def test_len(self):
vec1 = Vector2f(1.0, 0.0)
length = vec1.len()
self.assertEqual(length, 1.0, "Unit vector failed")
vec1 = Vector2f(1.0, 1.0)
length = vec1.len()
self.assertEqual(length, sqrt(2), "[1.0,1.0] vector failed")
vec1 = Vector2f(0.0, 0.0)
length = vec1.len()
self.assertEqual(length, 0.0, "[0.0,0.0] vector failed")
vec1 = Vector2f(-1.0, 0.0)
length = vec1.len()
self.assertEqual(length, 1.0, "[-1.0,0.0] vector failed")
vec1 = Vector2f(21.234234, 15.345323)
length = vec1.len()
self.assertEqual(round(length, 5), 26.19870,
"[21.234234,15.345323] vector failed")
def test_mul(self):
vec1 = Vector2f(1.2543, 1.2432)
num = 2
vecResult = vec1 * num
self.assertEqual(vecResult.x, 1.2543 * num,
"Multiplying with positive number failed")
self.assertEqual(vecResult.y, 1.2432 * num,
"Multiplying with positive number failed")
vec1 = Vector2f(1.2543, 1.2432)
num = -2
vecResult = vec1 * num
self.assertEqual(vecResult.x, 1.2543 * num,
"Multiplying with negative number failed")
self.assertEqual(vecResult.y, 1.2432 * num,
"Multiplying with negative number failed")
vec1 = Vector2f(1.2543, 1.2432)
num = 0.0
vecResult = vec1 * num
self.assertEqual(vecResult.x, 0.0, "Multiplying with zero failed")
self.assertEqual(vecResult.y, 0.0, "Multiplying with zero failed")
def test_vec_normalize(self):
vec1 = Vector2f(0.0, 0.0)
vec1.normalize()
self.assertEqual(vec1.x, 0.0, "Normalized zerovector x failed")
self.assertEqual(vec1.y, 0.0, "Normalized zerovector y failed")
vec1 = Vector2f(1.0, 0.0)
vec1.normalize()
self.assertEqual(vec1.x, 1.0, "Normalized (1.0, 0.0) x failed")
self.assertEqual(vec1.y, 0.0, "Normalized (1.0, 0.0) y failed")
vec1 = Vector2f(0.0, 1.0)
vec1.normalize()
self.assertEqual(vec1.x, 0.0, "Normalized (0.0, 1.0) x failed")
self.assertEqual(vec1.y, 1.0, "Normalized (0.0, 1.0) y failed")
vec1 = Vector2f(1.23122, 0.23342)
vec1.normalize()
self.assertEqual(round(vec1.x, 5), 0.98250, "Normalized l>1 x failed")
self.assertEqual(round(vec1.y, 5), 0.18627, "Normalized l>1 y failed")
vec1 = Vector2f(0.73122, 0.23342)
vec1.normalize()
self.assertEqual(round(vec1.x, 5), 0.95264, "Normalized l<1 x failed")
self.assertEqual(round(vec1.y, 5), 0.30410, "Normalized l<1 y failed")
def wander(self):
# Get wander force with random angle
wForce = normalize(self.v) * self.cDist
rForce = normalize(self.v) * self.cRad
self.wAngle += (random.random() * 2 - 1) * self.wChange
rForce.rotate(self.wAngle)
wForce += rForce
# Turn back at the window limits
if self.pos.x > 1100:
wForce += Vector2f(-1.0, 0.0) * self.pos.x / 100 * self.params.maxF
elif self.pos.x < 100:
wForce += Vector2f(
1.0, 0.0) * (1280 - self.pos.x) / 100 * self.params.maxF
if self.pos.y > 650:
wForce += Vector2f(0.0, -1.0) * self.pos.y / 100 * self.params.maxF
elif self.pos.y < 70:
wForce += Vector2f(
0.0, 1.0) * (720 - self.pos.y) / 100 * self.params.maxF
# Truncate to maxF
wForce.trunc(self.params.maxF)
# Get final velocity
steering = wForce / self.params.mass * self.gParams.speed
self.v = trunc(self.v + steering, self.params.maxV)
def test_distance(self):
vec1 = Vector2f(1.0, 0.0)
vec2 = Vector2f(0.0, 1.0)
self.assertEqual(distance(vec1, vec2), sqrt(2), "Dist1 failed")
vec1 = Vector2f(0.0, 0.0)
vec2 = Vector2f(0.0, 0.0)
self.assertEqual(distance(vec1, vec2), 0.0, "Dist2 failed")
vec1 = Vector2f(0.2314320, 0.3242123)
vec2 = Vector2f(-0.2342343, 0.0324121)
self.assertEqual(round(distance(vec1, vec2), 5), 0.54954,
"Dist3 failed")
def calcRepulsion(self, followers):
self.repulsionF = Vector2f(0.0, 0.0)
collisionChecks = 0
# Calculate evasion from neighbours that are too close
for i in self.grid.getNeighbours(self.loc.x, self.loc.y):
d = distance(self.pos, i.pos)
collisionChecks += 1
if d < self.params.separationD and d != 0.0:
self.repulsionF += (self.pos -
i.getPos()) * self.params.separationD / d
# Evade leader if necessary
fLeader = self.leader.getPos() + normalize(
self.leader.getV()) * self.params.followDist
d = distance(self.pos, fLeader)
if d < self.params.followDist and d != 0.0:
self.repulsionF += (self.pos -
fLeader) * self.params.followDist / d
d = distance(self.pos, self.leader.getPos())
if d < self.params.followDist and d != 0.0:
self.repulsionF += (self.pos - self.leader.getPos()
) * 2 * self.params.followDist / d
return collisionChecks
def test_angle(self):
vec1 = Vector2f(1.0, 0.0)
self.assertEqual(vec1.angle(), 0.0, "0 degrees failed")
vec1 = Vector2f(0.0, 1.0)
self.assertEqual(vec1.angle(), pi / 2, "90 degrees failed")
vec1 = Vector2f(-1.0, 0.0)
self.assertEqual(vec1.angle(), pi, "180 degrees failed")
vec1 = Vector2f(0.0, -1.0)
self.assertEqual(vec1.angle(), 3 * pi / 2, "270 degrees failed")
vec1 = Vector2f(0.234522, 0.123477)
self.assertEqual(round(vec1.angle(), 5), round(atan2(vec1.y, vec1.x),
5),
"22.76703 degrees failed")
vec1 = Vector2f(-0.234522, -0.123477)
self.assertEqual(round(vec1.angle(), 5),
round(atan2(vec1.y, vec1.x) + 2 * pi, 5),
"202.76703 degrees failed")
def test_add(self):
vec1 = Vector2f(1.2543, 1.2432)
vec2 = Vector2f(0.7543, 0.4432)
vecResult = vec1 + vec2
self.assertEqual(vecResult.x, 1.2543 + 0.7543,
"Adding positive x coordinate failed")
self.assertEqual(vecResult.y, 1.2432 + 0.4432,
"Adding positive y coordinate failed")
vec1 = Vector2f(1.2543, 1.2432)
vec2 = Vector2f(-0.7543, -0.4432)
vecResult = vec1 + vec2
self.assertEqual(vecResult.x, 1.2543 - 0.7543,
"Adding negative x coordinate failed")
self.assertEqual(vecResult.y, 1.2432 - 0.4432,
"Adding negative y coordinate failed")
vec1 = Vector2f(1.2543, 1.2432)
vec2 = Vector2f(0.0, 0.0)
vecResult = vec1 + vec2
self.assertEqual(vecResult.x, 1.2543,
"Adding zero x coordinate failed")
self.assertEqual(vecResult.y, 1.2432,
"Adding zero y coordinate failed")
