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# -*- coding: utf-8 -*-
"""
***************************************************************************
---------------------
Date : 27.03.2018
Copyright : (C) 2018 by Benjamin Jakimow
Email : benjamin jakimow at geo dot hu-berlin dot de
***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************
"""
# noinspection PyPep8Naming
import sys, os, re, collections
from qgis import *
from qgis.core import *
from qgis.gui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
import pyqtgraph.opengl as gl
from pyqtgraph import functions as fn
from OpenGL.GL import *
import OpenGL.GLUT
from pyqtgraph.opengl import *
from pyqtgraph.opengl.GLGraphicsItem import GLGraphicsItem
from pyqtgraph.Vector import Vector
class AxisGrid3D(GLGraphicsItem):
def __init__(self, *args, **kwds):
super(AxisGrid3D, self).__init__(*args, **kwds)
self.antialias = True
self.mRangesMin = np.asarray([0,0,0], dtype=np.float64)
self.mRangesMax = np.asarray([1,1,1], dtype=np.float64)
self.mSteps = np.asarray([10,10,10], dtype=np.int)
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self.mVisibility = np.ones((3), dtype=np.bool)
self.mColor = QColor('grey')
self.mDims = ['xy', 'xz', 'yz']
def setColor(self, color):
self.mColor = QColor(color)
def set(self, dim, v0=None, v1=None, steps=None, visible=None, skipUpdate=False):
assert isinstance(dim, str)
dim = dim.lower()
assert dim in self.mDims
i = self.mDims.index(dim)
if v0 is not None:
self.mRangesMin[i] = v0
if v1 is not None:
self.mRangesMax[i] = v1
if isinstance(steps, int):
self.mSteps[i] = steps
if isinstance(visible, bool):
self.mVisibility[i] = visible
if not skipUpdate:
self.update()
def setXY(self, **kwds):
self.set('xy', **kwds)
def setXZ(self, **kwds):
self.set('xz', **kwds)
def setYZ(self, **kwds):
self.set('yz', **kwds)
def setMinRanges(self, ranges):
self.mRangesMin[:] = ranges
def setMaxRanges(self, ranges):
self.mRangesMax[:] = ranges
def paint(self):
self.setupGLState()
if self.antialias:
glEnable(GL_LINE_SMOOTH)
glEnable(GL_BLEND)
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST)
glBegin(GL_LINES)
#T = self.transform()
#origin of axis values
valMin = Vector(*self.mRangesMin)
#max extent of axis values
valMax = Vector(*self.mRangesMax)
valRange = valMax - valMin
if valRange.x() <= 0:
valRange.setX(1)
if valRange.y() <= 0:
valRange.setY(1)
if valRange.z() <= 0:
valRange.setZ(1)
stepSize = valRange / Vector(self.mSteps)
valuesX = np.arange(valMin.x(), valMax.x()+1.00001*stepSize.x(), stepSize.x())
valuesY = np.arange(valMin.y(), valMax.y()+1.00001*stepSize.y(), stepSize.y())
valuesZ = np.arange(valMin.z(), valMax.z()+1.00001*stepSize.z(), stepSize.z())
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c = fn.glColor(self.mColor)
glColor4f(*c)
if self.mVisibility[0]: #show XY
for x in valuesX:
glVertex3f(x, valuesY[0], valMin.z())
glVertex3f(x, valuesY[-1], valMin.z())
for y in valuesY:
glVertex3f(valuesX[0], y, valMin.z())
glVertex3f(valuesX[-1], y, valMin.z())
if self.mVisibility[1]: # show XZ
for x in valuesX:
glVertex3f(x, valMin.y(), valuesZ[0])
glVertex3f(x, valMin.y(), valuesZ[-1])
for z in valuesZ:
glVertex3f(valuesX[0], valMin.y(), z)
glVertex3f(valuesX[-1], valMin.y(), z)
if self.mVisibility[2]: # show YZ
for y in valuesY:
glVertex3f(valMin.x(), y, valuesZ[0])
glVertex3f(valMin.x(), y, valuesZ[-1])
for z in valuesZ:
glVertex3f(valMin.x(), valuesY[0], z)
glVertex3f(valMin.x(), valuesY[-1], z)
glEnd()
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class Label3D(GLGraphicsItem):
def __init__(self, label='', *args, **kwds):
super(Label3D, self).__init__(*args, **kwds)
self.mLabel = label
self.mIsVisible = True
self.mPos =np.asarray([0,0,0], dtype=np.float)
def setPos(self, x,y,z):
self.mPos[0] = x
self.mPos[1] = y
self.mPos[2] = z
def setText(self, text):
assert isinstance(text, str)
self.mLabel = text
def text(self):
return self.mLabel
def setVisible(self, b):
assert isinstance(b, bool)
self.mIsVisible = b
self.update()
def isVisible(self):
return self.mIsVisible
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def paint(self, *args, **kwds):
s = ""
if False:
self.setupGLState()
#glBegin(GL_LINES)
glEnable(GL_LINE_SMOOTH)
glEnable(GL_BLEND)
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST)
#glBegin(GL_LINES)
glPushMatrix()
x,y,z= self.mPos
glTranslatef(1,0,0)
#glScale()
from OpenGL.GLUT import glutStrokeCharacter,glutStrokeWidth, GLUT_STROKE_ROMAN
w = 0
text = self.mLabel.encode('utf-8')
for c in text:
w += glutStrokeWidth(GLUT_STROKE_ROMAN, c)
glRotate(1,0,1,0)
glScale(0.1,0.1,0.1)
glTranslatef(-w / 2., -w/5., -w/2.)
for c in text:
glutStrokeCharacter(GLUT_STROKE_ROMAN, c)
glPopMatrix()
class ViewWidget3D(GLViewWidget):
def __init__(self, parent=None):
super(ViewWidget3D, self).__init__(parent)
self.mousePos = QPoint(-1, -1)
self.setBackgroundColor(QColor('black'))
self.setMouseTracking(True)
self.mDataMinRanges = np.asarray([0, 0, 0])
self.mDataMaxRanges = np.asarray([1, 1, 1])
self.mDataSpan = self.mDataMaxRanges - self.mDataMinRanges
self.mScale = np.asarray([1.,1.,1.])
self.mDataN = 0
self.glAxes = Axis3D()
from pyqtgraph.Transform3D import Transform3D
self.mItemTransformation = Transform3D()
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#self.glGridItemXY = AxisGrid3D()
#self.glGridItemXZ = AxisGrid3D()
#self.glGridItemYZ = AxisGrid3D()
self.glGridItem = AxisGrid3D()
#self.glGridItemXZ.setVisible(False)
#self.glGridItemYZ.setVisible(False)
x, y, z = self.glAxes.size()
#self.glGridItemYZ.rotate(-90, 0, 1, 0)
#self.glGridItemXZ.rotate( 90, 1, 0, 0)
# self.glGridItemXY.scale(x/10,y/10, 1)
# self.glGridItemXZ.scale(x/10,z/10, 1)
# self.glGridItemYZ.scale(y/10,z/10, 1)
#self.mBasicItems = [self.glGridItemXY, self.glGridItemXZ, self.glGridItemYZ, self.glAxes]
self.mBasicItems = [self.glAxes, self.glGridItem]
for item in self.mBasicItems:
if item == self.glAxes:
item.setDepthValue(-10)
else:
item.setDepthValue(0)
self.addItem(item) # draw grid/axis after surfaces since they may be translucent
"""
def setDataRangeX(self, x0, x1):
assert x0 < x1
self.mDataMinRanges[0] = x0
self.mDataMaxRanges[0] = x1
def setDataRangeY(self, y0, y1):
assert y0 < y1
self.mDataMinRanges[0] = y0
self.mDataMaxRanges[0] = y1
def setDataRangeZ(self, z0, z1):
assert z0 < z1
self.mDataMinRanges[0] = z0
self.mDataMaxRanges[0] = z1
"""
def setCameraPosition(self, pos=None, distance=None, elevation=None, azimuth=None):
if distance is not None:
self.opts['distance'] = distance
if elevation is not None:
self.opts['elevation'] = elevation
if azimuth is not None:
self.opts['azimuth'] = azimuth
if pos is not None:
if not isinstance(pos, QVector3D):
pos = Vector(pos)
self.opts['center'] = pos
def resetCamera(self):
# self.mDataMinRanges
self.updateDataRanges()
self.resetScaling()
x,y,z = self.mDataMaxRanges
self.setCameraPosition([1.,0.5,0.5], distance=10, elevation=10, azimuth=10)
self.update()
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def clearItems(self):
to_remove = [i for i in self.items if i not in self.mBasicItems]
for i in to_remove:
self.items.remove(i)
i._setView(None)
self.update()
def paintGL(self, *args, **kwds):
GLViewWidget.paintGL(self, *args, **kwds)
self.qglColor(Qt.white)
self.renderAnnotations()
def zoomToFull(self):
x = y = z = 0
for item in self.items:
if item not in self.mBasicItems:
pos = item.pos
#self.setCameraPosition(pos=pos, distance=10)
break
s = ""
def updateDataRanges(self):
"""
Re-calcuates the data ranges of the added plot items.
Calls this before re-scaling the transformation matrix.
"""
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x0 = x1 = y0 = y1 = z0 = z1 = n = None
if hasattr(self, 'items'):
for item in self.items:
if item not in self.mBasicItems and hasattr(item, 'pos'):
pos = item.pos
if x0 is None:
n = pos.shape[0]
x0 = pos[:, 0].min()
y0 = pos[:, 1].min()
z0 = pos[:, 2].min()
x1 = pos[:, 0].max()
y1 = pos[:, 1].max()
z1 = pos[:, 2].max()
else:
n = max(n, pos.shape[0])
x0 = min(x0, pos[:, 0].min())
y0 = min(y0, pos[:, 1].min())
z0 = min(z0, pos[:, 2].min())
x1 = max(x1, pos[:, 0].max())
y1 = max(y1, pos[:, 1].max())
z1 = max(z1, pos[:, 2].max())
if x1 is not None:
self.mDataMinRanges = np.asarray([x0, y0, z0])
self.mDataMaxRanges = np.asarray([x1, y1, z1])
self.mDataSpan = self.mDataMaxRanges - self.mDataMinRanges
#avoid division by zero and provide a minimum range of 1/10000
self.mDataSpan = np.where(self.mDataSpan == 0, np.ones((3), dtype=np.float64)/10000., self.mDataSpan)
self.mDataMaxRanges = self.mDataMinRanges + self.mDataSpan
self.mDataN = n
self.glAxes.setMinRanges(self.mDataMinRanges)
self.glAxes.setMaxRanges(self.mDataMaxRanges)
self.glGridItem.setMinRanges(self.mDataMinRanges)
self.glGridItem.setMaxRanges(self.mDataMaxRanges)
def resetScaling(self):
t = pg.Transform3D()
scale = np.asarray([0.9, 1.0, 0.8]) / np.asarray(self.mDataSpan) # scale to 0-1
t.scale(*scale)
t.translate(*(-1 * np.asarray(self.mDataMinRanges))) # set axis origin to 0:0:0
vMin = t*Vector(self.mDataMinRanges)
vMax = t*Vector(self.mDataMaxRanges)
#pos = (self.mDataMinRanges+self.mDataMaxRanges)*0.5
#self.setCameraPosition(pos=Vector(*pos)*t)
#self.setCameraPosition(pos=t*Vector(*pos))
#self.setCameraPosition(pos=Vector(*pos))
self.setItemTransform(t)
#self.setCameraPosition(pos=Vector(0.5,0.5,0.5))
def setItemTransform(self, transform):
assert isinstance(transform, pg.Transform3D)
self.mItemTransformation = transform
for item in self.items:
item.setTransform(transform)
def itemTransformation(self):
return self.mItemTransformation
def addItems(self, items):
"""Adds a list of items to this plot"""
for item in items:
assert isinstance(item, GLGraphicsItem)
if hasattr(item, 'initializeGL'):
self.makeCurrent()
try:
item.initializeGL()
except:
self.checkOpenGLVersion('Error while adding item %s to GLViewWidget.' % str(item))
item._setView(self)
self.items.extend(items)
self.updateDataRanges()
self.update()
def removeItems(self, items):
for item in items:
if item in self.items:
self.items.remove(item)
item._setView(None)
self.updateDataRanges()
self.update()
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def mouseMoveEvent(self, ev):
assert isinstance(ev, QMouseEvent)
""" Allow Shift to Move and Ctrl to Pan.
Example taken from https://gist.github.com/blink1073/7406607
"""
shift = ev.modifiers() & QtCore.Qt.ShiftModifier
ctrl = ev.modifiers() & QtCore.Qt.ControlModifier
if shift:
y = ev.pos().y()
if not hasattr(self, '_prev_zoom_pos') or not self._prev_zoom_pos:
self._prev_zoom_pos = y
return
dy = y - self._prev_zoom_pos
def delta():
return -dy * 5
ev.delta = delta
self._prev_zoom_pos = y
self.wheelEvent(ev)
elif ctrl:
pos = ev.pos().x(), ev.pos().y()
if not hasattr(self, '_prev_pan_pos') or not self._prev_pan_pos:
self._prev_pan_pos = pos
return
dx = pos[0] - self._prev_pan_pos[0]
dy = pos[1] - self._prev_pan_pos[1]
self.pan(dx, dy, 0, relative=True)
self._prev_pan_pos = pos
else:
super(ViewWidget3D, self).mouseMoveEvent(ev)
# items = self.itemsAt((pos.x(), pos.y(), 3, 3))
def mousePressEvent(self, event):
super(ViewWidget3D, self).mousePressEvent(event)
self.mousePos = event.pos()
if event.button() == Qt.RightButton:
self.select = True
else:
self.select = False
try:
glColorSelected = fn.glColor(QColor('red'))
for item in self.itemsAt((self.mousePos.x(), self.mousePos.y(), 3, 3)):
if isinstance(item, GLLinePlotItem):
c = item.color
item.setData(color=glColorSelected)
QTimer.singleShot(DT_SELECTION, lambda item=item, c=c: item.setData(color=c))
except:
pass
def renderAnnotations(self):
if self.glAxes.visible():
x0, y0, z0 = self.glAxes.rangeMinima()
x1, y1, z1 = self.glAxes.rangeMaxima()
dx, dy, dz = self.glAxes.rangeSpan()
T = self.glAxes.transform()
#transform
d = 0.1
V0 = T * Vector(*self.glAxes.rangeMinima())
V1 = T * Vector(*self.glAxes.rangeMaxima())
dx = V1.x() - V0.x()
dy = V1.y() - V0.y()
dz = V1.z() - V0.z()
sx = V1.x() + 0.1*dx
sy = V1.y() + 0.1*dy
sz = V1.z() + 0.1*dz
if x1 is not None:
#self.renderText(x1 + d*dx, 0, 0, self.glAxes.mLabels[0])
self.renderText(sx, 0, 0, self.glAxes.mLabels[0])
if y1 is not None:
#self.renderText(0, y1 + d*dy, 0, self.glAxes.mLabels[1])
self.renderText(0, sy, 0, self.glAxes.mLabels[1])
if z1 is not None:
#self.renderText(0, 0, z1 + d*dz, self.glAxes.mLabels[2])
self.renderText(0, 0, sz, self.glAxes.mLabels[2])
if True: #set axes origin
l = '{} {} {}'.format(x0,y0,z0)
self.renderText(V0.x()-0.1*dx,V0.y()-0.1*dy, V0.z()-0.1*dz, l)
# self.renderText(0.8, 0.8, 0.8, 'text 3D')
# self.renderText(5, 10, 'text 2D fixed')
self.qglColor(Qt.darkYellow)
self.renderText(5, 10, '(3D Mode still experimental)')
def contextMenuEvent(self, event):
assert isinstance(event, QContextMenuEvent)
menu = QMenu()
a = menu.addAction('Reset Camera')
a.triggered.connect(self.resetCamera)
menu.addSeparator()
# define grid options
m = menu.addMenu('Grids')
def gridVisibility(b):
for d in ['XY','XZ','YZ']:
self.glGridItem.set(d, visible=b)
self.glGridItem.update()
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a = m.addAction('Show All')
a.setCheckable(False)
a.triggered.connect(lambda: gridVisibility(True))
a = m.addAction('Hide All')
a.setCheckable(False)
a.triggered.connect(lambda: gridVisibility(False))
m.addSeparator()
for i, dim in enumerate(['XY','XZ','YZ']):
a = m.addAction(dim)
a.setCheckable(True)
a.setChecked(self.glGridItem.mVisibility[i])
a.toggled.connect(lambda b, dim=dim:self.glGridItem.set(dim,visible=b))
m = menu.addMenu('Axes')
a = m.addAction('Show All')
a.setCheckable(False)
a.triggered.connect(lambda : self.glAxes.setAxes('xyz', visible=True))
a = m.addAction('Hide All')
a.setCheckable(False)
a.triggered.connect(lambda: self.glAxes.setAxes('xyz', visible=False))
m.addSeparator()
a = m.addAction('X')
a.setCheckable(True)
a.setChecked(self.glAxes.mVisibility[0])
a.toggled.connect(lambda b: self.glAxes.setX(visible=b))
a = m.addAction('Y')
a.setCheckable(True)
a.setChecked(self.glAxes.mVisibility[1])
a.toggled.connect(lambda b: self.glAxes.setY(visible=b))
a = m.addAction('Z')
a.setCheckable(True)
a.setChecked(self.glAxes.mVisibility[2])
a.toggled.connect(lambda b: self.glAxes.setZ(visible=b))
frame = QFrame()
layout = QGridLayout()
frame.setLayout(layout)
names = ['X','Y','Z']
for i, label in enumerate(self.glAxes.labels()):
dim = names[i]
layout.addWidget(QLabel(dim), i,0)
tb = QLineEdit()
tb.setText(label)
tb.textChanged.connect(lambda t, dim=dim : self.glAxes.setAxes(dim, label=t))
layout.addWidget(tb,i,1)
layout.setSpacing(1)
layout.setMargin(1)
frame.setMinimumSize(layout.sizeHint())
wa = QWidgetAction(menuLabels)
wa.setDefaultWidget(frame)
menuLabels.addAction(wa)
menu.exec_(self.mapToGlobal(event.pos()))
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class GLTextItem(GLGraphicsItem):
def __init__(self, X=None, Y=None, Z=None, text=None):
GLGraphicsItem.__init__(self)
self.text = text
self.X = X
self.Y = Y
self.Z = Z
def setGLViewWidget(self, GLViewWidget):
self.GLViewWidget = GLViewWidget
def setText(self, text):
self.text = text
self.update()
def setX(self, X):
self.X = X
self.update()
def setY(self, Y):
self.Y = Y
self.update()
def setZ(self, Z):
self.Z = Z
self.update()
def paint(self):
self.GLViewWidget.qglColor(Qt.white)
self.GLViewWidget.renderText(self.X, self.Y, self.Z, self.text)
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class Axis3D(GLAxisItem):
def __init__(self, *args, **kwds):
super(Axis3D, self).__init__(*args, **kwds)
self.mRanges = np.asarray([[0, 1], [0, 1], [0, 1]])
self.mColors = [QColor('white'), QColor('white'), QColor('white')]
self.mVisibility = [True, True, True]
self.mLabels = ['X', 'Y', 'Z']
def rangeMinima(self):
return self.mRanges[:, 0]
def rangeMaxima(self):
return self.mRanges[:, 1]
def setMinRanges(self, ranges):
self.mRanges[:,0] = ranges
def setMaxRanges(self, ranges):
self.mRanges[:,1] = ranges
def rangeSpan(self):
return self.mRanges[:,1] - self.mRanges[:,0]
def setAxes(self, ax, vMin=None, vMax=None, label=None, color=None, visible=None):
for c in ax:
i = ['x', 'y', 'z'].index(c.lower())
if vMin is not None:
self.mRanges[i][0] = vMin
if vMax is not None:
self.mRanges[i][1] = vMax
if color is not None:
self.mColors[i] = color
if label is not None:
self.mLabels[i] = label
if visible is not None:
self.mVisibility[i] = visible
self.update()
def setLabels(self, x,y,z):
self.mLabels = [x,y,z]
def labels(self):
return self.mLabels[:]
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def setX(self, **kwds):
self.setAxes('x', **kwds)
def setY(self, **kwds):
self.setAxes('y', **kwds)
def setZ(self, **kwds):
self.setAxes('z', **kwds)
def paint(self):
self.setupGLState()
if self.antialias:
glEnable(GL_LINE_SMOOTH)
glHint(GL_LINE_SMOOTH_HINT, GL_NICEST)
x0, y0, z0 = self.rangeMinima()
x1, y1, z1 = self.rangeMaxima()
#V0 = Vector(*self.rangeMinima())
#V1 = Vector(*self.rangeMaxima())
#T = self.transform()
#V0 = V0*T
#V1 = V1*T
#x0,y0,z0 = V0.x(), V0.y(), V0.z()
#x1, y1, z1 = V1.x(), V1.y(), V1.z()
glLineWidth(3.0)
glBegin(GL_LINES)
if self.mVisibility[0]:
glColor4f(*fn.glColor(self.mColors[0]))
glVertex3f(x0, y0, z0)
glVertex3f(x1, y0, z0)
if self.mVisibility[1]:
glColor4f(*fn.glColor(self.mColors[1]))
glVertex3f(x0, y0, z0)
glVertex3f(x0, y1, z0)
if self.mVisibility[2]:
glColor4f(*fn.glColor(self.mColors[2]))
glVertex3f(x0, y0, z0)
glVertex3f(x0, y0, z1)
glEnd()
glLineWidth(1.0)