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Taddeüs Kroes
multitouch
Commits
2f572483
Commit
2f572483
authored
May 08, 2012
by
Taddeus Kroes
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Plain Diff
Added simple pan detection.
parent
eba31ca6
Changes
2
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2 changed files
with
44 additions
and
28 deletions
+44
-28
src/events.py
src/events.py
+2
-2
src/touch.py
src/touch.py
+42
-26
No files found.
src/events.py
View file @
2f572483
...
@@ -107,6 +107,6 @@ class Pan(Gesture):
...
@@ -107,6 +107,6 @@ class Pan(Gesture):
self
.
n
=
n
self
.
n
=
n
def
__str__
(
self
):
def
__str__
(
self
):
return
'<%s (%s, %s)
to
(%s, %s) n=%d>'
%
\
return
'<%s (%s, %s)
direction=
(%s, %s) n=%d>'
%
\
(
self
.
__class__
.
__name__
,
self
.
x
,
self
.
y
,
self
.
dx
,
self
.
dy
,
(
self
.
__class__
.
__name__
,
self
.
x
,
self
.
y
,
self
.
dx
,
self
.
dy
,
self
.
amount
,
self
.
n
)
self
.
n
)
src/touch.py
View file @
2f572483
...
@@ -273,36 +273,47 @@ class MultiTouchListener(Logger):
...
@@ -273,36 +273,47 @@ class MultiTouchListener(Logger):
return
cx
-
ocx
,
cy
-
ocy
return
cx
-
ocx
,
cy
-
ocy
def
detect_pan
(
self
):
#
def detect_pan(self):
"""
#
"""
Look for multi-finger drag events. Multi-drag is defined as all the
#
Look for multi-finger drag events. Multi-drag is defined as all the
fingers moving close-ish together in the same direction.
#
fingers moving close-ish together in the same direction.
"""
#
"""
l
=
len
(
self
.
points
)
#
l = len(self.points)
if
not
l
:
#
if not l:
return
False
#
return False
m
=
MAX_MULTI_DRAG_DISTANCE
#
m = MAX_MULTI_DRAG_DISTANCE
clustered
=
l
==
1
or
all
([
p
.
distance
(
*
self
.
centroid
)
<=
m
\
#
clustered = l == 1 or all([p.distance(*self.centroid) <= m \
for
p
in
self
.
points
])
#
for p in self.points])
directions
=
[(
cmp
(
p
.
dx
(),
0
),
cmp
(
p
.
dy
(),
0
))
#
directions = [(cmp(p.dx(), 0), cmp(p.dy(), 0))
for
p
in
self
.
points
]
#
for p in self.points]
if
not
clustered
or
not
any
(
map
(
all
,
zip
(
*
directions
))):
#
if not clustered or not any(map(all, zip(*directions))):
return
False
#
return False
if
l
==
1
:
# if l == 1:
p
=
self
.
points
[
0
]
# p = self.points[0]
cx
,
cy
,
dx
,
dy
=
p
.
x
,
p
.
y
,
p
.
dx
(),
p
.
dy
()
# cx, cy, dx, dy = p.x, p.y, p.dx(), p.dy()
else
:
# else:
cx
,
cy
=
self
.
centroid
# cx, cy = self.centroid
old_cx
,
old_cy
=
self
.
old_centroid
# old_cx, old_cy = self.old_centroid
dx
,
dy
=
cx
-
old_cx
,
cy
-
old_cy
# dx, dy = cx - old_cx, cy - old_cy
# self.trigger(Pan(cx, cy, dx, dy, l))
self
.
trigger
(
Pan
(
cx
,
cy
,
dx
,
dy
,
l
))
# return True
return
True
def
detect_pan
(
self
):
l
=
len
(
self
.
points
)
if
not
l
:
return
if
distance
(
self
.
centroid
,
self
.
old_centroid
)
>
DIST_THRESHOLD
:
cx
,
cy
=
self
.
centroid
dx
,
dy
=
self
.
centroid_movement
()
self
.
trigger
(
Pan
(
cx
,
cy
,
dx
,
dy
,
l
))
def
find_point
(
self
,
sid
,
index
=
False
):
def
find_point
(
self
,
sid
,
index
=
False
):
for
i
,
p
in
enumerate
(
self
.
points
):
for
i
,
p
in
enumerate
(
self
.
points
):
...
@@ -340,8 +351,10 @@ class MultiTouchListener(Logger):
...
@@ -340,8 +351,10 @@ class MultiTouchListener(Logger):
# If a pan event is detected, ignore any rotate or pinch movement
# If a pan event is detected, ignore any rotate or pinch movement
# (they are considered noise)
# (they are considered noise)
if
not
self
.
detect_pan
():
self
.
detect_pan
()
self
.
detect_rotation_and_pinch
()
self
.
detect_rotation_and_pinch
()
#if not self.detect_pan():
# self.detect_rotation_and_pinch()
self
.
points_changed
=
False
self
.
points_changed
=
False
...
@@ -427,8 +440,11 @@ if __name__ == '__main__':
...
@@ -427,8 +440,11 @@ if __name__ == '__main__':
listener
.
bind
(
'tap'
,
tap
,
0
)
listener
.
bind
(
'tap'
,
tap
,
0
)
listener
.
bind
(
'single_tap'
,
tap
,
1
)
listener
.
bind
(
'single_tap'
,
tap
,
1
)
listener
.
bind
(
'double_tap'
,
tap
,
2
)
listener
.
bind
(
'double_tap'
,
tap
,
2
)
# Add empty handlers sp that the events are actually triggered
listener
.
bind
(
'rotate'
,
lambda
e
:
0
)
listener
.
bind
(
'rotate'
,
lambda
e
:
0
)
listener
.
bind
(
'pinch'
,
lambda
e
:
0
)
listener
.
bind
(
'pinch'
,
lambda
e
:
0
)
listener
.
bind
(
'pan'
,
lambda
e
:
0
)
try
:
try
:
listener
.
start
()
listener
.
start
()
...
...
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