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qt_utils.py
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qt_utils.py
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#!/usr/bin/env python
import sys
import vtk
import PyQt5
import numpy as np
import os
from PyQt5 import QtCore, QtWidgets, QtGui
from PyQt5.QtWidgets import QApplication, QFrame, QCheckBox, QGridLayout, \
QHBoxLayout, QPushButton, QLabel, QSizePolicy, QSpacerItem, QToolButton, QStyleFactory, \
QVBoxLayout, QWidget, QButtonGroup, QSlider, QMenuBar, QDockWidget, QMainWindow, QScrollArea, QFileDialog, QAction
from PyQt5.QtOpenGL import QGLFormat
from PyQt5.QtWidgets import QSizePolicy
from vtk.qt.QVTKRenderWindowInteractor import QVTKRenderWindowInteractor
from PyQt5.QtCore import Qt
from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg
from matplotlib.figure import Figure
from itertools import product
from vtk.util import numpy_support
import vtk
from PyQt5.QtOpenGL import QGLFormat
from qt_utils_rangeslider import *
import warnings
import math
import vtk_utils
from matplotlib import pyplot as plt
from matplotlib.image import imread as imread
from matplotlib.collections import QuadMesh, LineCollection, PatchCollection
def calculate_viewpoint_bounds(v_al, actual_size, renderer):
coordinate = vtk.vtkCoordinate()
coordinate.SetCoordinateSystemToWorld()
# bounds_indices = np.asarray([[0,0,0],[0,0,1], [0,1,0], [0,1,1], [1,0,0], [1,0,1], [1,1,0], [1,1,1]])
bounds_indices = np.asarray([[0,2,4],[0,2,5], [0,3,4], [0,3,5], [1,2,4], [1,2,5], [1,3,4], [1,3,5]])
viewport_bounds = np.zeros(4)
viewport_bounds[:2] = np.inf
viewport_bounds[2:] = -1
for bound_index in bounds_indices:
coordinate.SetValue(v_al[bound_index[0]], v_al[bound_index[1]], v_al[bound_index[2]])
viewCoord = coordinate.GetComputedViewportValue(renderer)
if viewCoord[0] < viewport_bounds[0]:
viewport_bounds[0] = viewCoord[0]
if viewCoord[1] < viewport_bounds[1]:
viewport_bounds[1] = viewCoord[1]
if viewCoord[0] > viewport_bounds[2]:
viewport_bounds[2] = viewCoord[0]
if viewCoord[1] > viewport_bounds[3]:
viewport_bounds[3] = viewCoord[1]
viewport_bounds /= np.asarray([actual_size[0], actual_size[1], actual_size[0], actual_size[1]])
return viewport_bounds
def bounds_to_viewpoint(v_al, actual_size, renderer):
coordinate = vtk.vtkCoordinate()
coordinate.SetCoordinateSystemToWorld()
# bounds_indices = np.asarray([[0,0,0],[0,0,1], [0,1,0], [0,1,1], [1,0,0], [1,0,1], [1,1,0], [1,1,1]])
bounds_indices = np.asarray([[0,2,4],[0,2,5], [0,3,4], [0,3,5], [1,2,4], [1,2,5], [1,3,4], [1,3,5]])
viewpoint_bounds = np.zeros([8, 2])
for b, bound_index in enumerate(bounds_indices):
coordinate.SetValue(v_al[bound_index[0]], v_al[bound_index[1]], v_al[bound_index[2]])
viewpoint_bounds[b,:] = coordinate.GetComputedViewportValue(renderer)
viewpoint_bounds /= np.asarray([actual_size[0], actual_size[1]])
return viewpoint_bounds
def interpolate_grid(grid, subsampling=10):
grid_origin = grid[0,0,:]
grid_offsets = (grid - grid_origin)/subsampling
grid_persp_i = grid_offsets[1,1,:] - grid_offsets[1,0,:]
grid_persp_j = grid_offsets[1,1,:] - grid_offsets[0,1,:]
new_grid = np.zeros([subsampling + 1, subsampling + 1, 2])
for i in range(subsampling + 1):
for j in range(subsampling + 1):
new_grid[i,j,:] = grid_origin + (i*grid_offsets[1,0,:]) + (j*grid_offsets[0,1,:]) + (i * grid_persp_i) + (j * grid_persp_j)
return new_grid
def make_mpl_axes(axes_lims=[[0,1], [0,1], [0,1]], xlabel='X', ylabel='Y', zlabel='Z', savename='mpl.pgf', im=None, figsize=(6,6), cam_params=[30,30,30], edgecolor='k', focal_length=1, viewport_bounds=[0,0,1,1], dots=None):
aspect = np.asarray([axes_lims[1]-axes_lims[0], axes_lims[3]-axes_lims[2], axes_lims[5]-axes_lims[4]])
plt.rcParams["figure.autolayout"] = False
fig = plt.figure(figsize=figsize)
plt.axis('equal')
# ax = fig.add_axes(viewport_bounds, projection='3d', box_aspect=aspect)
# # ax = plt.axes(projection='3d', box_aspect=aspect)
# # ax = plt.axes(projection='3d')
# ax.view_init(azim=cam_params[0], elev=cam_params[1], roll=cam_params[2])
# ax.set_proj_type('persp', focal_length=focal_length)
# print('viewport bounds', viewport_bounds)
# # ax.set_position(viewport_bounds, which='actual')
# ax.patch.set_linewidth(2)
# ax.patch.set_edgecolor('cornflowerblue')
# # ax.set_xlabel(xlabel)
# # ax.set_ylabel(ylabel)
# # ax.set_zlabel(zlabel)
# ax.set_xlim(axes_lims[0], axes_lims[1])
# ax.set_ylim(axes_lims[2], axes_lims[3])
# ax.set_zlim(axes_lims[4], axes_lims[5])
# ax.xaxis.pane.fill = False
# ax.yaxis.pane.fill = False
# ax.zaxis.pane.fill = False
# ax.xaxis.pane.set_edgecolor(edgecolor)
# ax.yaxis.pane.set_edgecolor(edgecolor)
# ax.zaxis.pane.set_edgecolor(edgecolor)
# plt.tick_params(top=False, bottom=False, left=False, right=False,
# labelleft=False, labelbottom=False)
ax2 = fig.add_axes([0, 0, 1, 1])
ax2.patch.set_alpha(0.00)
ax2.set_axis_off()
if dots is not None:
xp = np.zeros((2,2,2))
xp[0,0,:] = dots[0,:]
xp[0,1,:] = dots[1,:]
xp[1,0,:] = dots[2,:]
xp[1,1,:] = dots[3,:]
xp = interpolate_grid(xp)
x_plane = QuadMesh(xp, edgecolors='k', facecolors='w')
yp = np.zeros((2,2,2))
yp[0,0,:] = dots[0,:]
yp[0,1,:] = dots[4,:]
yp[1,0,:] = dots[2,:]
yp[1,1,:] = dots[6,:]
yp = interpolate_grid(yp)
y_plane = QuadMesh(yp, edgecolors='k', facecolors='w')
zp = np.zeros((2,2,2))
zp[0,0,:] = dots[0,:]
zp[0,1,:] = dots[1,:]
zp[1,0,:] = dots[4,:]
zp[1,1,:] = dots[5,:]
zp = interpolate_grid(zp)
z_plane = QuadMesh(zp, edgecolors='k', facecolors='w')
xp2 = np.zeros((2,2,2))
xp2[0,0,:] = dots[4,:]
xp2[0,1,:] = dots[5,:]
xp2[1,0,:] = dots[6,:]
xp2[1,1,:] = dots[7,:]
x_plane_2 = QuadMesh(xp2, edgecolors='k', facecolors='w')
yp2 = np.zeros((2,2,2))
yp2[0,0,:] = dots[1,:]
yp2[0,1,:] = dots[5,:]
yp2[1,0,:] = dots[3,:]
yp2[1,1,:] = dots[7,:]
y_plane_2 = QuadMesh(yp2, edgecolors='k', facecolors='w')
zp2 = np.zeros((2,2,2))
zp2[0,0,:] = dots[2,:]
zp2[0,1,:] = dots[3,:]
zp2[1,0,:] = dots[6,:]
zp2[1,1,:] = dots[7,:]
z_plane_2 = QuadMesh(zp2, edgecolors='k', facecolors='w')
ax2.add_collection(x_plane)
ax2.add_collection(y_plane)
ax2.add_collection(z_plane)
# for dot in dots:
# rect = Circle(dot, radius=0.005, color="blue", zorder=10)
# ax2.add_patch(rect)
if im is not None:
imax = fig.add_axes([0, 0, 1, 1])
# imax = fig.add_axes([0.05, 0.05, 0.9, 0.9])
imax.set_axis_off()
imax.imshow(im, aspect="equal")
# rect = Rectangle((0.5, 0.5), width=0.05, height=0.05, color="red", zorder=10)
# imax.add_patch(rect)
# imax.patch.set_linewidth(2)
# imax.patch.set_edgecolor('green')
# actual_fucking_position = ax.get_position()
# print('fucking position', actual_fucking_position)
# ax.set_position(viewport_bounds, which='actual')
# actual_fucking_position = ax.get_position()
# print('fucking position', actual_fucking_position)
# plt.tight_layout()
plt.savefig(savename, dpi=600)
plt.show()
def export_geometry(source, savename=None, filetype='gltf', verbose=True):
if filetype == 'vtkjs':
savename = savename[:-6]
if verbose:
print('writing VTKJS to %s' % savename)
# warnings.warn('This export function is broken for JS files, I\'m not sure what\'s wrong')
# pass
exporter = vtk.vtkJSONRenderWindowExporter()
exporter.SetDebug(True)
exporter.GlobalWarningDisplayOn()
exporter.GetArchiver().SetArchiveName(savename)
# exporter.GetArchiver().SetArchiveName('/home/fraser/Videos/LiverView/dodec_export3.js')
exporter.SetRenderWindow(source)
exporter.Write()
exporter.Update()
# scene_name = os.path.split(savename)[1]
# savename = savename + ".vtkjs"
# try:
# import zlib
# import zipfile
# compression = zipfile.ZIP_DEFLATED
# except:
# compression = zipfile.ZIP_STORED
# zf = zipfile.ZipFile(savename, mode='w')
# for dir_name, _, file_list in os.walk(savename):
# for fname in file_list:
# full_path = os.path.join(dir_name, fname)
# rel_path = '%s/%s' % (scene_name,
# os.path.relpath(full_path, savename))
# zf.write(full_path, arcname=rel_path, compress_type=compression)
# zf.close()
if verbose:
print('file written')
if filetype == 'js':
if verbose:
print('writing JS to %s' % savename)
# warnings.warn('This export function is broken for JS files, I\'m not sure what\'s wrong')
# pass
exporter = vtk.vtkJSONRenderWindowExporter()
exporter.SetDebug(True)
exporter.GlobalWarningDisplayOn()
exporter.GetArchiver().SetArchiveName(savename)
# exporter.GetArchiver().SetArchiveName('/home/fraser/Videos/LiverView/dodec_export3.js')
exporter.SetRenderWindow(source)
exporter.Write()
exporter.Update()
if verbose:
print('file written')
# exporter = vtk.vtkJSONRenderWindowExporter()
# partitioned_archiver = vtk.vtkPythonArchiver()
# partitioned_archiver.SetArchiveName(savename)
# # partitioned_archiver.OpenArchive()
# exporter.SetArchiver(partitioned_archiver)
# exporter.SetRenderWindow(source)
# print('JS', dir(exporter), exporter)
# # exporter.SetFileName('%s.jsre' % savename)
# exporter.Write()
# exporter.Update()
# # partitioned_archiver.CloseArchive()
# if verbose:
# print('file written')
if filetype == 'wrl':
if verbose:
print('writing WRL to %s' % savename)
exporter = vtk.vtkVRMLExporter()
exporter.SetRenderWindow(source)
exporter.SetFileName('%s.wrl' % savename)
exporter.Write()
exporter.Update()
if verbose:
print('file written')
elif filetype == 'obj':
if verbose:
print('writing OBJ to %s' % savename)
exporter = vtk.vtkOBJExporter()
exporter.SetRenderWindow(source)
exporter.SetFilePrefix(savename)
exporter.Write()
exporter.Update()
if verbose:
print('file written')
elif filetype == 'pdf':
if verbose:
print('writing PDF to %s' % savename)
exporter = vtk.vtkPDFExporter()
exporter.SetRenderWindow(source)
exporter.SetFileName(savename)
exporter.Update()
exporter.Write()
print(exporter)
print(dir(exporter))
if verbose:
print('file written')
elif filetype == 'svg':
if verbose:
print('writing SVG to %s' % savename)
exporter = vtk.vtkSVGExporter()
exporter.SetRenderWindow(source)
exporter.SetFileName(savename)
exporter.Write()
exporter.Update()
if verbose:
print('file written')
elif filetype == 'gl2ps':
if verbose:
print('writing GL2PS to %s' % savename)
exporter = vtk.vtkGL2PSExporter()
exporter.SetRenderWindow(source)
exporter.SetFilePrefix(savename)
exporter.Write()
exporter.Update()
if verbose:
print('file written')
elif filetype == 'x3d':
if verbose:
print('writing x3D to %s' % savename)
exporter = vtk.vtkX3DExporter()
exporter.SetInput(source)
exporter.SetFileName(savename)
exporter.Update()
exporter.Write()
if verbose:
print('file written')
elif filetype == 'pov':
if verbose:
print('writing POV to %s' % savename)
exporter = vtk.vtkPOVExporter()
exporter.SetInput(source)
exporter.SetFileName(savename)
exporter.Update()
exporter.Write()
if verbose:
print('file written')
elif filetype == 'pvwgl':
if verbose:
print('writing PVWGL to %s' % savename)
exporter = vtk.vtkPVWebGLExporter()
exporter.SetInput(source)
exporter.SetFileName(savename)
exporter.Update()
exporter.Write()
if verbose:
print('file written')
elif filetype == 'gltf':
if verbose:
print('writing GLTF to %s' % savename)
try:
exporter = vtk.vtkGLTFExporter()
except AttributeError:
print('Gltf exporting is not supported in your version of VTK, try updating')
exporter.SetInput(source)
exporter.InlineDataOn()
exporter.SetFileName(savename)
exporter.Update()
exporter.Write()
if verbose:
print('file written')
elif filetype == 'png':
render_scale = 4
w2if = vtk.vtkWindowToImageFilter()
w2if.SetScale(render_scale)
w2if.SetInput(source)
w2if.Update()
if verbose:
print('writing data to %s, upscaled by %d' % (savename, render_scale))
writer = vtk.vtkPNGWriter()
writer.SetFileName(savename)
writer.SetInputData(w2if.GetOutput())
writer.Write()
if verbose:
print('file written')
source.Render()
elif filetype == 'pgf':
tempname = 'temp_overlay.png'
temp_image_size = 1000
renderer = source.GetRenderers().GetFirstRenderer()
renderer.SetBackgroundAlpha(0.0)
renderer.GradientBackgroundOff()
renderer.SetUseDepthPeeling(1)
renderer.SetOcclusionRatio(0)
renderer.Modified()
source.SetAlphaBitPlanes(1)
source.Modified()
dpi = source.GetDPI()
actual_size = source.GetActualSize()
print(actual_size)
aspect_ratio = actual_size[0]/actual_size[1]
render_scale = int(np.ceil(temp_image_size/actual_size[0]))
physical_size = np.asarray(actual_size)/dpi
total_3D_actors = renderer.GetActors().GetNumberOfItems()
actors = renderer.GetActors()
for i in range(total_3D_actors):
actor = actors.GetItemAsObject(i)
if isinstance(actor, vtk.vtkCubeAxesActor):
actor.SetVisibility(False)
if verbose:
print('writing PGF to %s' % savename)
w2if = vtk.vtkWindowToImageFilter()
w2if.SetInputBufferTypeToRGBA()
w2if.SetScale(render_scale)
w2if.SetInput(source)
w2if.ReadFrontBufferOff()
w2if.Update()
if verbose:
print('writing data to %s, upscaled by %d' % (savename, render_scale))
writer = vtk.vtkPNGWriter()
writer.SetFileName(tempname)
writer.SetInputData(w2if.GetOutput())
writer.Write()
source.Render()
im = imread(tempname)
for i in range(total_3D_actors):
actor = renderer.GetActors().GetItemAsObject(i)
if isinstance(actor, vtk.vtkCubeAxesActor):
# xtitle = actor.GetXTitle()
# ytitle = actor.GetYTitle()
# ztitle = actor.GetZTitle()
# Elements:
# 4.44795 0 0 0
# 0 3.73205 0 0
# 0 0 -2.72046 -85.8674
# 0 0 -1 0
#
print(actor, dir(actor))
xtitle = actor.GetZTitle()
ytitle = actor.GetXTitle()
ztitle = actor.GetYTitle()
v_al = np.asarray(actor.GetBounds())
mpl_axes_limits = np.asarray([v_al[4], v_al[5], v_al[0], v_al[1], v_al[2], v_al[3]])
axes_camera = actor.GetCamera()
axes_camera.OrthogonalizeViewUp()
parallel_scale = axes_camera.GetParallelScale()/10
print('parallel scale', parallel_scale)
clipping_range = axes_camera.GetClippingRange()
viewport_bounds = calculate_viewpoint_bounds(v_al, actual_size, renderer)
# print(viewport_bounds)
mpl_axes_viewpoint_pos = np.asarray([viewport_bounds[0], viewport_bounds[1], viewport_bounds[2]-viewport_bounds[0], viewport_bounds[3]-viewport_bounds[1]])
# transform_matrix = axes_camera.GetCompositeProjectionTransformMatrix(aspect_ratio, clipping_range[0], clipping_range[1])
# print(transform_matrix.GetData(), dir(transform_matrix))
direction_of_projection = axes_camera.GetViewPlaneNormal()
azimuth = direction_of_projection[0] * (180/np.pi)
elevation = direction_of_projection[1] * (180/np.pi)
roll = axes_camera.GetRoll()
camera_params = [azimuth, elevation, roll]
# angle = 2*atan((h/2)/d) #where h is the height of the RenderWindow (measured by holding a ruler up to your screen) and d is the distance from your eyes to the screen.
actor.SetVisibility(True)
source.Render()
dots = bounds_to_viewpoint(v_al, actual_size, renderer)
make_mpl_axes(axes_lims=mpl_axes_limits, xlabel=xtitle, ylabel=ytitle, zlabel=ztitle, im=im, figsize=physical_size, savename=savename, cam_params=camera_params, focal_length=parallel_scale, viewport_bounds=mpl_axes_viewpoint_pos, dots=dots)
if verbose:
print('file written')
else:
print('Filetype (%s) not supported in list of exporters' % savename)
def selectionCallback(caller, event):
sel = caller.GetCurrentSelection()
node0 = sel.GetNode(0)
node0_field_type = node0.GetFieldType()
sel_list0 = caller.GetCurrentSelection().GetNode(0).GetSelectionList()
node1 = sel.GetNode(1)
node1_field_type = node1.GetFieldType()
sel_list1 = caller.GetCurrentSelection().GetNode(1).GetSelectionList()
# print(sel_list0, sel_list1)
if (sel_list0.GetNumberOfTuples() > 0):
# printFieldType(node0_field_type)
for ii in range(sel_list0.GetNumberOfTuples()):
print(sel_list0.GetValue(ii))
if (sel_list1.GetNumberOfTuples() > 0):
# printFieldType(node1_field_type)
for ii in range(sel_list1.GetNumberOfTuples()):
print(sel_list1.GetValue(ii))
# class MyInteractorStyle(vtk.vtkInteractorStyleRubberBand3D):
class MyInteractorStyle(vtk.vtkInteractorStyleTrackballCamera):
"""[VTK class definitions to allow for more natural camera movement (trackpad style)
and keybindings for extra functionality (camera movement, printscreens etc.)]
Arguments:
expects: renderWindowInteractor, render_camera, renderWindow
"""
def __init__(self, parent, camera, renderer):
self.parent = parent
self.camera = camera
self.renderer = renderer
self.verbose = False
self.auto_up = True
self.AddObserver("MiddleButtonPressEvent", self.middle_button_press_event)
self.AddObserver("MiddleButtonReleaseEvent", self.middle_button_release_event)
self.AddObserver("LeftButtonPressEvent", self.left_button_press_event)
self.AddObserver("LeftButtonReleaseEvent", self.left_button_release_event)
self.AddObserver("KeyPressEvent", self.keyPressEvent)
self.AddObserver('AnnotationChangedEvent', selectionCallback)
# self.AutoAdjustCameraClippingRange(True)
def camera_zoom_in(self, step=2):
old = np.asarray(self.camera.GetPosition())
new = old *0.9
if self.auto_up:
up = np.asarray([0, 0, 1])
self.camera.SetViewUp(up)
self.camera.SetPosition(tuple(new))
# print(dir(self.renderer))
# self.renderer.ResetCameraClippingRange()
self.renderer.Render()
return
def camera_zoom_out(self, step=2):
old = np.asarray(self.camera.GetPosition())
new = old * 1.1
if self.auto_up:
up = np.asarray([0, 0, 1])
self.camera.SetViewUp(up)
self.camera.SetPosition(tuple(new))
# self.renderer.ResetCameraClippingRange()
self.renderer.Render()
return
def rotate_clockwise(self, step=2):
old = list(self.camera.GetPosition())
x_coord = old[0]
y_coord = old[1]
if x_coord >= 0:
if y_coord >= 0:
x_sign = -1
y_sign = 1
else:
x_sign = 1
y_sign = 1
elif y_coord >= 0:
x_sign = -1
y_sign = -1
else:
x_sign = 1
y_sign = -1
scale = 0.05
del_x = np.abs(y_coord) * scale * x_sign
del_y = np.abs(x_coord) * scale * y_sign
hypot_1 = math.hypot(old[0], old[1])
new_x = old[0] + del_x
new_y = old[1] + del_y
hypot_2 = math.hypot(new_x, new_y)
rescale = hypot_1/hypot_2
new = old
new[0] = (new_x * rescale)
new[1] = (new_y * rescale)
if self.auto_up:
up = np.asarray([0, 0, 1])
self.camera.SetViewUp(up)
self.camera.SetPosition(tuple(new))
self.renderer.Render()
return
def rotate_anticlockwise(self):
old = list(self.camera.GetPosition())
x_coord = old[0]
y_coord = old[1]
if x_coord > 0:
if y_coord > 0:
x_sign = 1
y_sign = -1
else:
x_sign = -1
y_sign = -1
elif y_coord > 0:
x_sign = 1
y_sign = 1
else:
x_sign = -1
y_sign = 1
scale = 0.05
del_x = np.abs(y_coord) * scale * x_sign
del_y = np.abs(x_coord) * scale * y_sign
hypot_1 = math.hypot(old[0], old[1])
new_x = old[0] + del_x
new_y = old[1] + del_y
hypot_2 = math.hypot(new_x, new_y)
rescale = hypot_1/hypot_2
new = old
new[0] = (new_x * rescale)
new[1] = (new_y * rescale)
if self.auto_up:
up = np.asarray([0, 0, 1])
self.camera.SetViewUp(up)
self.camera.SetPosition(tuple(new))
self.renderer.Render()
return
def rotate_upclockwise(self):
old = list(self.camera.GetPosition())
x_coord = old[0]
y_coord = old[1]
# print(x_coord, y_coord)
d_coord = math.hypot(x_coord, y_coord)
z_coord = old[2]
if z_coord >= 0:
z_sign = 1
d_sign = -1
else:
z_sign = 1
d_sign = 1
scale = 0.05
del_z = np.abs(d_coord) * scale * z_sign
del_d = np.abs(z_coord) * scale * d_sign
hypot_1 = math.hypot(d_coord, z_coord)
new_z = z_coord + del_z
new_d = d_coord + del_d
hypot_2 = math.hypot(new_z, new_d)
rescale = hypot_1/hypot_2
new = old
new[2] = (new_z * rescale)
new_d = (new_d * rescale)
rescale_2 = new_d/d_coord
new[0] = (x_coord * rescale_2)
new[1] = (y_coord * rescale_2)
if self.auto_up:
up = np.asarray([0, 0, 1])
self.camera.SetViewUp(up)
self.camera.SetPosition(tuple(new))
self.renderer.Render()
return
def rotate_downclockwise(self):
old = list(self.camera.GetPosition())
x_coord = old[0]
y_coord = old[1]
d_coord = math.hypot(x_coord, y_coord)
z_coord = old[2]
if z_coord >= 0:
z_sign = -1
d_sign = +1
else:
z_sign = -1
d_sign = -1
scale = 0.05
del_z = np.abs(d_coord) * scale * z_sign
del_d = np.abs(z_coord) * scale * d_sign
hypot_1 = math.hypot(d_coord, z_coord)
new_z = z_coord + del_z
new_d = d_coord + del_d
hypot_2 = math.hypot(new_z, new_d)
rescale = hypot_1/hypot_2
new = old
new[2] = (new_z * rescale)
new_d = (new_d * rescale)
rescale_2 = new_d/d_coord
new[0] = (x_coord * rescale_2)
new[1] = (y_coord * rescale_2)
if self.auto_up:
up = np.asarray([0, 0, 1])
self.camera.SetViewUp(up)
self.camera.SetPosition(tuple(new))
self.renderer.Render()
return
def screenshot(self):
w2if = vtk.vtkWindowToImageFilter()
# print(dir(w2if))
w2if.SetScale(4)
w2if.SetInput(self.renderer)
w2if.Update()
writer = vtk.vtkPNGWriter()
writer.SetFileName("screenshot.png")
writer.SetInputData(w2if.GetOutput())
writer.Write()
def keyPressEvent(self, obj, event):
key = str(self.parent.GetKeySym())
# check here for available keypresses supported by Qt & VTK
# https://github.com/Kitware/VTK/blob/master/GUISupport/Qt/QVTKInteractorAdapter.cxx
if key == 'Left':
self.rotate_clockwise()
if key == 'Right':
self.rotate_anticlockwise()
if key == 'Up':
self.rotate_upclockwise()
if key == 'Down':
self.rotate_downclockwise()
if key == 'c':
self.screenshot()
if key == 'equal':
self.camera_zoom_in()
if key == 'minus':
self.camera_zoom_out()
if key == 'o':
self.switch_rendering_mode()
return
def left_button_press_event(self, obj, event):
if self.verbose:
print("left Button pressed")
self.OnLeftButtonDown()
return
def left_button_release_event(self, obj, event):
if self.verbose:
print("left Button released")
self.OnLeftButtonUp()
return
def middle_button_press_event(self, obj, event):
if self.verbose:
print("Middle Button pressed")
self.OnMiddleButtonDown()
return
def middle_button_release_event(self, obj, event):
if self.verbose:
print("Middle Button released")
self.OnMiddleButtonUp()
return
def switch_rendering_mode(self):
# print(dir(self.camera))
projection_mode = self.camera.GetParallelProjection()
if projection_mode == 1:
self.camera.SetParallelProjection(False)
projection_mode = self.camera.GetParallelProjection()
# print(projection_mode)
print('Camera set to Perspective Projection')
else:
self.camera.SetParallelProjection(True)
projection_mode = self.camera.GetParallelProjection()
# print(projection_mode)
print('Camera set to Parallel Projection')
self.renderer.Render()
class Widget(QMainWindow):
def __init__(self,
locations=None,
data=None,
actor_dict=None,
edge_data=None,
data_type='basis',
glyph_type='cube',
glyph_scale=1,
indicator_type='crystal',
cubemap=None,
parent=None,
slicing_vals=None,
title=None,
caption_dict=None,
show_camera_controls=False,
use_SSAO=False):
super(Widget, self).__init__(parent=parent)
f = QGLFormat()
# print(dir(f))
print(f)
f.setSampleBuffers(True) # turn on antialiasing
f.setAlpha(True)
QGLFormat.setDefaultFormat(f)
self.range_dict = dict()
self.title_text = title
self.data_backup = data
self.data_type = data_type
self.indices = None
self.indicator_type = indicator_type
self.caption_dict = caption_dict
self.show_camera_controls = show_camera_controls
self.use_SSAO = use_SSAO
try:
self.indices = np.arange(0, locations.shape[0])
except:
pass
self.locations_backup = locations
self.data = data
self.edge_data = edge_data
self.slicing_vals = slicing_vals
self.cubemap_path = cubemap
# actor_dict_1D = dict()
if actor_dict is not None:
# print('List of actors supplied')
# for keyname in actor_dict.keys():