def draw_init(self, backgroundImg=False, fontsize=14, fontColor="white"):
gloo.clear(color="#231e1f")
# gloo.set_state("translucent", depth_test=False,blend=True)
try:
self.text.clear()
except:
pass
self.selected_point = -1
self.fontsize = fontsize
panzoom = PanZoomTransform(self.canvas)
if backgroundImg:
self.im = read_png("timg.png")
self.image = ImageVisual(self.im, method="subdivide")
self.image.update = self.canvas.update
self.image.transform = STTransform(
scale=(2 / self.image.size[0], 2 / self.image.size[1]),
translate=(-1, -1),
)
else:
self.image = None
self.markers = PointCollection(
"agg",
vertex=self.pvertex,
fragment=self.pfragment,
color="shared",
size="local",
transform=panzoom,
)
self.lines = PathCollection(
mode="agg",
vertex=self.lvertex,
fragment=self.lfragment,
color="shared",
linewidth="global",
transform=panzoom,
)
self.markers.update.connect(self.canvas.update)
self.lines.update.connect(self.canvas.update)
self.text = TextVisual(u"", color="white")
self.text.font_size = self.fontsize
self.text.visible = False
self.textpos = None
self.canvas.events.draw.connect(self.on_draw)
self.canvas.events.resize.connect(self.on_resize)
self.canvas.events.mouse_press.connect(self.on_mouse_press)
self.canvas.show()
from vispy.util import load_data_file
from vispy.util.svg import Document
from vispy.visuals.collections import PathCollection, PolygonCollection
from vispy.visuals.transforms import PanZoomTransform
path = load_data_file('tiger/tiger.svg')
tiger = Document(path)
width, height = int(tiger.viewport.width), int(tiger.viewport.height)
canvas = app.Canvas(size=(width, height), show=True, keys='interactive')
gloo.set_viewport(0, 0, width, height)
gloo.set_state("translucent", depth_test=True)
panzoom = PanZoomTransform(canvas, aspect=1.0)
paths = PathCollection("agg+",
linewidth='shared',
color="shared",
transform=panzoom)
polys = PolygonCollection("agg", transform=panzoom)
paths.update.connect(canvas.update)
z = 0
for path in tiger.paths:
for vertices, closed in path.vertices:
vertices = 2 * (vertices / (width, height, 1)) - 1
vertices[:, 1] = -vertices[:, 1]
if len(vertices) < 3:
continue
if path.style.stroke is not None:
vertices[:, 2] = z - 0.5 / 1000.
if path.style.stroke_width:
T = np.linspace(0, 2 * np.pi, 2 * n, endpoint=False)
P = np.zeros((2 * n, 3))
P[:, 0] = R * np.cos(T)
P[:, 1] = R * np.sin(T)
return P
n = 2500
S = star(n=5)
P = np.tile(S.ravel(), n).reshape(n, len(S), 3)
P *= np.random.uniform(5, 10, n)[:, np.newaxis, np.newaxis]
P[:, :, :2] += np.random.uniform(0, 800, (n, 2))[:, np.newaxis, :]
P = P.reshape(n * len(S), 3)
P = 2 * (P / (800, 800, 1)) - 1
paths = PathCollection(mode="agg")
paths.append(P, closed=True, itemsize=len(S))
paths["linewidth"] = 1.0
paths["viewport"] = 0, 0, 800, 800
@c.connect
def on_draw(e):
gloo.clear("white")
paths.draw()
@c.connect
def on_resize(e):
width, height = e.size[0], e.size[1]
gloo.set_viewport(0, 0, width, height)
triangles = T.tris.ravel()
P = np.zeros((len(points), 3), dtype=np.float32)
P[:, :2] = points
return P, triangles
def star(inner=0.5, outer=1.0, n=5):
R = np.array([inner, outer] * n)
T = np.linspace(0, 2 * np.pi, 2 * n, endpoint=False)
P = np.zeros((2 * n, 3))
P[:, 0] = R * np.cos(T)
P[:, 1] = R * np.sin(T)
return P
paths = PathCollection("agg", color='shared')
triangles = TriangleCollection("raw", color='shared')
P0 = star()
P1, tris = triangulate(P0)
n = 1000
for i in range(n):
c = i / float(n)
x, y = np.random.uniform(-1, +1, 2)
s = 25 / 800.0
triangles.append(P1 * s + (x, y, i / 1000.), tris, color=(1, 0, 0, .5))
paths.append(P0 * s + (x, y, (i - 1) / 1000.),
closed=True,
color=(0, 0, 0, .5))
canvas = app.Canvas(size=(800, 800), show=True, keys='interactive')
gloo.set_viewport(0, 0, canvas.size[0], canvas.size[1])
gloo.set_state("translucent", depth_test=False)
def star(inner=0.5, outer=1.0, n=5):
R = np.array([inner, outer] * n)
T = np.linspace(0, 2 * np.pi, 2 * n, endpoint=False)
P = np.zeros((2 * n, 3))
P[:, 0] = R * np.cos(T)
P[:, 1] = R * np.sin(T)
return P
paths = PathCollection("agg", color='shared')
polys = PolygonCollection("raw", color='shared')
P = star()
n = 100
for i in range(n):
c = i / float(n)
x, y = np.random.uniform(-1, +1, 2)
s = 100 / 800.0
polys.append(P * s + (x, y, i / 1000.), color=(1, 0, 0, .5))
paths.append(
P * s + (x, y, (i - 1) / 1000.), closed=True, color=(0, 0, 0, .5))
paths["linewidth"] = 1.0
paths['viewport'] = 0, 0, 800, 800
p = np.zeros((len(P), 3))
p[:, :2] = P
p = unique_rows(p)
if len(p) > 1:
paths.append(p, closed=True)
if len(p) > 2:
polys.append(p, color=color)
# Create the canvas.
canvas = app.Canvas(size=(800, 800), keys='interactive')
gloo.set_viewport(0, 0, canvas.size[0], canvas.size[1])
gloo.set_state("translucent", depth_test=False)
panzoom = PanZoomTransform(canvas, aspect=1)
paths = PathCollection(mode="agg+", color="global", transform=panzoom)
polys = PolygonCollection("raw", color="local", transform=panzoom)
paths.update.connect(canvas.update)
for feature in geo["features"]:
if feature["geometry"]["type"] == 'Polygon':
path = feature["geometry"]["coordinates"]
rgba = np.random.uniform(0.5, .8, 4)
rgba[3] = 1
add(path[0], color=rgba)
elif feature["geometry"]["type"] == 'MultiPolygon':
coordinates = feature["geometry"]["coordinates"]
for path in coordinates:
rgba = np.random.uniform(0.5, .8, 4)
rgba[3] = 1
class GraphHigh(QtWidgets.QWidget):
"""Widget defined in Qt Designer"""
filter_signal = QtCore.Signal(object, object)
neighbors_signal = QtCore.Signal(str, object)
def __init__(self, parent=None):
super(GraphHigh, self).__init__(parent)
self.canvas = app.Canvas(size=(1800, 600),
keys="interactive",
show=False)
gloo.set_viewport(0, 0, self.canvas.size[0], self.canvas.size[1])
gloo.set_state("translucent", depth_test=False)
# self.setObjectName("ThemeWidget")
# self.setStyleSheet("QWidget#ThemeWidget{background:transparent;border: 0px;}")
# self.canvas.native.setObjectName("ThemeWidget")
# self.canvas.native.setStyleSheet("QWidget#ThemeWidget{background:transparent;border: 0px;}")
self.filter_signal.connect(self.updateMarkerVisible)
vbl = QtWidgets.QVBoxLayout()
vbl.setSpacing(0)
vbl.setContentsMargins(0, 0, 0, 0)
vbl.addWidget(self.canvas.native)
self.setLayout(vbl)
gloo.clear(color="#231e1f")
# gloo.set_state("translucent", depth_test=False,blend=True)
self.canvas.show()
self.pvertex = """
varying float v_size;
varying vec4 v_color;
varying float v_linewidth;
varying float v_antialias;
// Main (hooked)
// ------------------------------------
void main (void)
{
fetch_uniforms();
v_size = size;
v_color = color;
gl_Position = $transform(vec4(position, 1));
gl_PointSize = size + 2.0 * (1.0 + 1.5*1.0);
}
"""
self.pfragment = """
#include "markers/disc.glsl"
#include "antialias/filled.glsl"
// Varyings
// ------------------------------------
varying float v_size;
varying vec4 v_color;
// Main
// ------------------------------------
void main()
{
vec2 P = gl_PointCoord.xy - vec2(0.5,0.5);
float point_size = v_size + 2. * (1.0 + 1.5*1.0);
float distance = marker_disc(P*point_size, v_size);
gl_FragColor = filled(distance, 1.0, 1.0, v_color);
}
"""
self.lvertex = """
#include "misc/viewport-NDC.glsl"
// Externs
// ------------------------------------
// extern vec3 prev;
// extern vec3 curr;
// extern vec3 next;
// extern float id;
// extern vec4 color;
// extern float antialias;
// extern float linewidth;
// extern vec4 viewport;
// vec4 transform(vec3 position);
// Varyings
// ------------------------------------
varying float v_antialias;
varying float v_linewidth;
varying float v_distance;
varying vec4 v_color;
// Main
// ------------------------------------
void main (void)
{
// This function is externally generated
fetch_uniforms();
v_linewidth = linewidth;
v_antialias = antialias;
v_color = color;
// transform prev/curr/next
vec4 prev_ = $transform(vec4(prev, 1));
vec4 curr_ = $transform(vec4(curr, 1));
vec4 next_ = $transform(vec4(next, 1));
// prev/curr/next in viewport coordinates
vec2 _prev = NDC_to_viewport(prev_, viewport.zw);
vec2 _curr = NDC_to_viewport(curr_, viewport.zw);
vec2 _next = NDC_to_viewport(next_, viewport.zw);
// Compute vertex final position (in viewport coordinates)
float w = linewidth/2.0 + 1.5*antialias;
float z;
vec2 P;
if( curr == prev) {
vec2 v = normalize(_next.xy - _curr.xy);
vec2 normal = normalize(vec2(-v.y,v.x));
P = _curr.xy + normal*w*id;
} else if (curr == next) {
vec2 v = normalize(_curr.xy - _prev.xy);
vec2 normal = normalize(vec2(-v.y,v.x));
P = _curr.xy + normal*w*id;
} else {
vec2 v0 = normalize(_curr.xy - _prev.xy);
vec2 v1 = normalize(_next.xy - _curr.xy);
vec2 normal = normalize(vec2(-v0.y,v0.x));
vec2 tangent = normalize(v0+v1);
vec2 miter = vec2(-tangent.y, tangent.x);
float l = abs(w / dot(miter,normal));
P = _curr.xy + miter*l*sign(id);
}
if( abs(id) > 1.5 ) v_color.a = 0.0;
v_distance = w*id;
gl_Position = viewport_to_NDC(vec3(P, curr_.z/curr_.w), viewport.zw);
}
"""
self.lfragment = """
#include "antialias/antialias.glsl"
// Varyings
// ------------------------------------
varying vec4 v_color;
varying float v_distance;
varying float v_linewidth;
varying float v_antialias;
// Main
// ------------------------------------
void main()
{
if (v_color.a == 0.) { discard; }
gl_FragColor = stroke(v_distance, v_linewidth, v_antialias, v_color);
}
"""
def draw_init(self, backgroundImg=False, fontsize=14, fontColor="white"):
gloo.clear(color="#231e1f")
# gloo.set_state("translucent", depth_test=False,blend=True)
try:
self.text.clear()
except:
pass
self.selected_point = -1
self.fontsize = fontsize
panzoom = PanZoomTransform(self.canvas)
if backgroundImg:
self.im = read_png("timg.png")
self.image = ImageVisual(self.im, method="subdivide")
self.image.update = self.canvas.update
self.image.transform = STTransform(
scale=(2 / self.image.size[0], 2 / self.image.size[1]),
translate=(-1, -1),
)
else:
self.image = None
self.markers = PointCollection(
"agg",
vertex=self.pvertex,
fragment=self.pfragment,
color="shared",
size="local",
transform=panzoom,
)
self.lines = PathCollection(
mode="agg",
vertex=self.lvertex,
fragment=self.lfragment,
color="shared",
linewidth="global",
transform=panzoom,
)
self.markers.update.connect(self.canvas.update)
self.lines.update.connect(self.canvas.update)
self.text = TextVisual(u"", color="white")
self.text.font_size = self.fontsize
self.text.visible = False
self.textpos = None
self.canvas.events.draw.connect(self.on_draw)
self.canvas.events.resize.connect(self.on_resize)
self.canvas.events.mouse_press.connect(self.on_mouse_press)
self.canvas.show()
def init_data2(self, filename):
work = GraphWork()
self.SubG = None
self.G = work.readFile(filename)
# Compute centrality measures
work.DegreeCentrality(self.G)
# Compute community measures
work.LouvainCommunity(self.G)
# Compute node sizes
self.marksize = work.setGNodesSize(self.G)
# Compute node colors
self.colors = work.setGNodesColor(self.G)
self.labels = work.getGNodesAttrList(self.G, "label")
# Compute graph layout
node_pos, edge_pos = work.pygraphviz_layout(self.G,
prog="sfdp",
bundle=False)
# Number of nodes
self.npts = self.G.number_of_nodes()
# Number of edges
self.nlinks = self.G.number_of_edges()
print("aaaa")
self.drawgraph(node_pos, edge_pos, self.colors, self.marksize)
def init_data(self, G, marksize, colors, labels, node_pos, edge_pos, npts,
nlinks):
self.G = G
self.SubG = None
self.marksize = marksize
self.colors = colors
self.labels = labels
# Number of nodes
self.npts = npts
# Number of edges
self.nlinks = nlinks
self.draw(node_pos, edge_pos, self.colors, self.marksize)
def draw(self, pos, edges, colors, marksize):
# Number of nodes
self.npts = len(pos)
# Number of edges
self.nlinks = len(edges)
self.colors = np.array(self.colors)
self.marksize = marksize
self.pos = np.array(pos)
edges = np.array(edges)
# Set node positions
self.get_Range()
self.pos = (self.pos - (self.width / 2, self.height / 2)) * (
2 / self.width,
2 / self.height,
)
self.pos = np.c_[self.pos, np.zeros(len(self.pos))]
self.markers.append(self.pos, size=self.marksize)
self.markers["color"] = self.colors
# Set edge colors
self.normal_selected_linecolor = np.array([[0.86, 0.86, 0.86, 0.4],
[1, 0, 0, 1],
[0.86, 0.86, 0.86, 0.1]])
self.lineselected = np.zeros(self.nlinks, dtype=int)
self.edges = []
for i in edges:
i = np.array(i)
i = (i - (self.width / 2, self.height / 2)) * (
2 / self.width,
2 / self.height,
)
self.edges.append(i)
tmp = np.c_[i, np.ones(len(i))]
self.lines.append(tmp, itemsize=len(i))
self.edges = np.array(self.edges)
self.lines["color"] = (0.86, 0.86, 0.86, 0.6)
self.lines["linewidth"] = 0.5
self.selected_point = -1
self.canvas.show()
def get_Range(self):
x = self.pos[:, 0]
y = self.pos[:, 1]
self.width = (x.max() - x.min()) * 1.05
self.height = (y.max() - y.min()) * 1.05
if x.max() == x.min():
self.width = x.max() * 1.05
if y.max() == y.min():
self.height = y.max() * 1.05
def on_draw(self, e):
gloo.clear(color="#231e1f")
if self.image:
self.image.draw()
self.lines.draw()
self.markers.draw()
try:
self.text.draw()
except:
vp = (0, 0, self.canvas.physical_size[0],
self.canvas.physical_size[1])
self.canvas.context.set_viewport(*vp)
self.markers["viewport"] = vp
self.lines["viewport"] = vp
self.text.transforms.configure(canvas=self.canvas, viewport=vp)
self.text.draw()
if self.textpos != None:
npos = self.pos[self.textpos]
npos = self.itransPos(npos)
self.text.pos = [npos[0], npos[1]]
self.canvas.update()
def on_resize(self, event):
vp = (0, 0, self.canvas.physical_size[0], self.canvas.physical_size[1])
self.canvas.context.set_viewport(*vp)
self.markers["viewport"] = vp
self.lines["viewport"] = vp
self.text.transforms.configure(canvas=self.canvas, viewport=vp)
def transPos(self, pos):
npos = self.markers.transform.canvas_tr.map(pos)
npos = (npos - self.markers.transform.translate
) / self.markers.transform.scale
return npos
def itransPos(self, pos):
npos = [pos[0], pos[1], 0, 1]
npos = self.markers.transform.canvas_tr.imap(
npos * self.markers.transform.scale +
self.markers.transform.translate)
return npos
def on_resize(self, event):
vp = (0, 0, self.canvas.physical_size[0], self.canvas.physical_size[1])
self.canvas.context.set_viewport(*vp)
self.lines["viewport"] = vp
self.markers["viewport"] = vp
self.text.transforms.configure(canvas=self.canvas, viewport=vp)
def on_mouse_press(self, event):
if event.button == 1:
if self.selected_point != -1:
self.updateSubGVisible()
self.selected_point = -1
if self.selected_point == -1:
width = self.canvas.physical_size[0]
height = self.canvas.physical_size[1]
pos = self.markers.transform.canvas_tr.map(event.pos)
pos = (pos - self.markers.transform.translate
) / self.markers.transform.scale
D = self.pos - [pos[0], pos[1], 0]
D = np.sqrt((D**2).sum(axis=1))
self.selected_point = np.argmin(D)
if D[self.selected_point] < 0.01:
self.colors[:, 3:4] = 1
nid = int(self.selected_point)
seleted = self.labels[nid]
self.updateMarkerVisible(seleted)
else:
self.selected_point = -1
self.textpos = None
self.text.visible = False
if self.SubG is None:
self.neighbors_signal.emit("", None)
else:
self.neighbors_signal.emit("", [])
def on_mouse_release(self, event):
self.selected_point = -1
def setSubG(self, SubG):
self.SubG = SubG
def updateSubGVisible(self):
if self.SubG is None:
self.colors[:, 3:4] = 1
self.markers["color"] = self.colors
self.lineselected[:] = 0
self.lines["color"] = self.normal_selected_linecolor[
self.lineselected]
self.canvas.update()
else:
result = self.SubG.nodes()
edges = self.SubG.edges()
for i, n in enumerate(self.G.nodes()):
if n not in result:
self.colors[i][3] = 0.0
else:
self.colors[i][3] = 1.0
self.markers["color"] = self.colors
itemindex = []
for i, edge in enumerate(self.G.edges()):
if edge in edges:
itemindex.append(i)
self.lineselected[:] = 2
for i in itemindex:
self.lineselected[i] = 1
self.lines["color"] = self.normal_selected_linecolor[
self.lineselected]
self.canvas.update()
def updateMarkerVisible(self, seleted):
if self.SubG is None:
G = self.G
self.colors[:, 3:4] = 1
self.markers["color"] = self.colors
self.lineselected[:] = 0
self.lines["color"] = self.normal_selected_linecolor[
self.lineselected]
else:
G = self.SubG
result = self.SubG.nodes()
edges = self.SubG.edges()
for i, n in enumerate(self.G.nodes()):
if n not in result:
self.colors[i][3] = 0.0
else:
self.colors[i][3] = 1.0
self.markers["color"] = self.colors
if seleted in G.nodes():
nid = self.labels.index(seleted)
self.selected_point = nid
result = []
nodes = G.nodes()
for i, edge in enumerate(self.G.edges()):
if seleted == edge[0] and edge[1] in nodes:
result.append(edge[1])
if seleted == edge[1] and edge[0] in nodes:
result.append(edge[0])
result = list(set(result))
sss = self.getNodeInfo(G, seleted)
self.neighbors_signal.emit(sss, result)
for i, n in enumerate(self.G.nodes()):
if n not in result:
self.colors[i][3] = 0.0
self.colors[self.selected_point][3] = 1
self.markers["color"] = self.colors
self.text.text = seleted
npos = self.pos[nid]
npos = [npos[0], npos[1], 0, 1]
npos = (npos * self.markers.transform.scale +
self.markers.transform.translate)
npos = self.markers.transform.canvas_tr.imap(npos)
self.textpos = nid
self.text.pos = [npos[0], npos[1]]
self.text.visible = True
itemindex = []
edges = G.edges()
for i, edge in enumerate(self.G.edges()):
if seleted == edge[0] or seleted == edge[1]:
if edge in edges:
itemindex.append(i)
self.lineselected[:] = 2
for i in itemindex:
self.lineselected[i] = 1
self.lines["color"] = self.normal_selected_linecolor[
self.lineselected]
self.canvas.update()
else:
self.text.visible = False
if self.SubG is None:
self.neighbors_signal.emit("", None)
else:
self.neighbors_signal.emit("", [])
self.selected_point = -1
def getNodeInfo(self, G, node):
nodesAttrs = [
("label", "Node name"),
("node_type", "Node type"),
("InDegree", "InDegree centrality"),
("OutDegree", "OutDegree centrality"),
("Degree", "Degree centrality"),
("Betweeness", "Betweenness centrality"),
("Closeness", "Closeness centrality"),
("PageRank", "PageRank centrality"),
("Louvain", "Louvain community"),
("Label propagation", "Label propagation community"),
("Union find", "Union find community"),
]
outstr = ""
data = G.nodes()[node]
for attr in nodesAttrs:
outstr = outstr + "%s: %s\n" % (attr[1], data[attr[0]])
return outstr
def updateMarkersColor(self, attrName):
work = GraphWork()
self.colors = work.setGNodesColor(self.G, attrName=attrName)
self.colors = np.array(self.colors)
if self.SubG is None:
self.colors[:, 3:4] = 1
else:
result = self.SubG.nodes()
for i, n in enumerate(self.G.nodes()):
if n not in result:
self.colors[i][3] = 0.0
else:
self.colors[i][3] = 1.0
self.markers["color"] = self.colors
self.canvas.update()
def updateMarkersSize(self, attrName):
work = GraphWork()
self.marksize = work.setGNodesSize(self.G, attrName=attrName)
for i in self.pos:
self.markers.__delitem__(0)
self.markers.append(self.pos, size=self.marksize)
if self.SubG is None:
self.colors[:, 3:4] = 1
else:
result = self.SubG.nodes()
for i, n in enumerate(self.G.nodes()):
if n not in result:
self.colors[i][3] = 0.0
else:
self.colors[i][3] = 1.0
self.markers["color"] = self.colors
self.canvas.update()
from vispy import app, gloo
from vispy.util import load_data_file
from vispy.util.svg import Document
from vispy.visuals.collections import PathCollection, PolygonCollection
from vispy.visuals.transforms import PanZoomTransform
path = load_data_file('tiger/tiger.svg')
tiger = Document(path)
width, height = int(tiger.viewport.width), int(tiger.viewport.height)
canvas = app.Canvas(size=(width, height), show=True, keys='interactive')
gloo.set_viewport(0, 0, width, height)
gloo.set_state("translucent", depth_test=True)
panzoom = PanZoomTransform(canvas, aspect=1.0)
paths = PathCollection(
"agg+", linewidth='shared', color="shared", transform=panzoom)
polys = PolygonCollection("agg", transform=panzoom)
paths.update.connect(canvas.update)
z = 0
for path in tiger.paths:
for vertices, closed in path.vertices:
vertices = 2 * (vertices / (width, height, 1)) - 1
vertices[:, 1] = -vertices[:, 1]
if len(vertices) < 3:
continue
if path.style.stroke is not None:
vertices[:, 2] = z - 0.5 / 1000.
if path.style.stroke_width:
stroke_width = path.style.stroke_width.value
T = np.linspace(0, 2 * np.pi, 2 * n, endpoint=False)
P = np.zeros((2 * n, 3))
P[:, 0] = R * np.cos(T)
P[:, 1] = R * np.sin(T)
return P
n = 2500
S = star(n=5)
P = np.tile(S.ravel(), n).reshape(n, len(S), 3)
P *= np.random.uniform(5, 10, n)[:, np.newaxis, np.newaxis]
P[:, :, :2] += np.random.uniform(0, 800, (n, 2))[:, np.newaxis, :]
P = P.reshape(n * len(S), 3)
P = 2 * (P / (800, 800, 1)) - 1
paths = PathCollection(mode="agg")
paths.append(P, closed=True, itemsize=len(S))
paths["linewidth"] = 1.0
paths['viewport'] = 0, 0, 800, 800
@c.connect
def on_draw(e):
gloo.clear('white')
paths.draw()
@c.connect
def on_resize(e):
width, height = e.size[0], e.size[1]
gloo.set_viewport(0, 0, width, height)