Macro MatrixTransform
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|
| Description |
|---|
| Applies linear transformation to a shape, defined by a 3x3 matrix. It is possible to: apply non-linear scaling to a shape, shear a shape, rotate a shape. This macro is composed of 2 macro: MatrixTransform.FCMacro (launcher) and MatrixTransform.py (executor). The .FCMacro is installed with AddonManager you must install the .py macro manually. Link of th two macros: MatrixTransform.FCMacro (launcher) MatrixTransform.py (executor) Macro version: 1.1 Last modified: 2024-12-09 FreeCAD version: All Download: ToolBar Icon Author: DeepSOIC |
| Author |
| DeepSOIC |
| Download |
| ToolBar Icon |
| Links |
| Macros recipes How to install macros How to customize toolbars |
| Macro Version |
| 1.1 |
| Date last modified |
| 2024-12-09 |
| FreeCAD Version(s) |
| All |
| Default shortcut |
| None |
| See also |
| None |
Description
Applies linear transformation to a shape, defined by a 3x3 matrix. It is possible to:
- apply non-linear scaling to a shape
- shear a shape
- rotate a shape
The transformation in the macro is linear. Lines remain straight, planes remain planar, parallel things remain parallel, only angles are distorted.
Temporary code for external macro link. Do not use this code. This code is used exclusively by Addon Manager. Link for optional manual installation: Macro
# This code is copied instead of the original macro code
# to guide the user to the online download page.
# Use it if the code of the macro is larger than 64 KB and cannot be included in the wiki
# or if the RAW code URL is somewhere else in the wiki.
from PySide import QtGui, QtCore
diag = QtGui.QMessageBox(QtGui.QMessageBox.Information,
"Information",
"This macro must be downloaded from this link\n"
"\n"
"https://raw.githubusercontent.com/DeepSOIC/FreeCAD-Macros/master/MatrixTransform/MatrixTransform.FCMacro" + "\n"
"\n"
"Quit this window to access the download page")
diag.setWindowFlags(QtCore.Qt.WindowStaysOnTopHint)
diag.setWindowModality(QtCore.Qt.ApplicationModal)
diag.exec_()
import webbrowser
webbrowser.open("https://raw.githubusercontent.com/DeepSOIC/FreeCAD-Macros/master/MatrixTransform/MatrixTransform.FCMacro")
Installation:
download these two files and save them in macro directory:
https://github.com/DeepSOIC/FreeCAD-Macros/raw/master/MatrixTransform/MatrixTransform.FCMacro
https://github.com/DeepSOIC/FreeCAD-Macros/raw/master/MatrixTransform/MatrixTransform.py
How to use:
- Select the shape to be transformed
- In FreeCAD menu: Macro -> Macros... -> double-click MatrixTransform.FCMacro . A new object will be created.
- Select the new object, and edit v1,v2,v3 properties on data tab to set the transformation matrix.
Matrix is defined by three vectors:
v1x v2x v3x
M = ( v1y v2y v3y )
v1z v2z v3z
Here, v1,v2,v3 are vectors that can be defined in properties. They correspond to new directions of what was originally X,Y,Z axes.
example matrices
No transformation
1 0 0 0 1 0 0 0 1
non-uniform scaling
scaleX 0 0
0 scaleY 0
0 0 scaleZ
shearing
(operation that makes regular text into italic; assuming text is in XY plane)
1 shear 0 0 1 0 0 0 1
'Shear' coefficient defines the amount of shearing. 0 is no shearing. 1 makes the text italic by 45 degrees. -1 shears in backslash-like fashion.
Warning. All geometry is converted to B-splines, even if it doesn't have to.
This can cause all sorts of trouble. Use only if absolutely necessary.
Script
ToolBar Icon 
MatrixTransform.py:
#***************************************************************************
#* *
#* Copyright (c) 2015 2024 - Victor Titov (DeepSOIC) *
#* <vv.titov@gmail.com> *
#* *
#* This program is free software; you can redistribute it and/or modify *
#* it under the terms of the GNU Lesser General Public License (LGPL) *
#* as published by the Free Software Foundation; either version 2 of *
#* the License, or (at your option) any later version. *
#* for detail see the LICENCE text file. *
#* *
#* This program is distributed in the hope that it will be useful, *
#* but WITHOUT ANY WARRANTY; without even the implied warranty of *
#* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
#* GNU Library General Public License for more details. *
#* *
#* You should have received a copy of the GNU Library General Public *
#* License along with this program; if not, write to the Free Software *
#* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
#* USA *
#* *
#***************************************************************************
__title__="Macro MatrixTransform"
__author__ = "DeepSOIC"
__doc__ = '''
Macro MatrixTransform.
Distorts geometry according to vector transformation defined by the matrix.
Matrix is defined by three vectors:
v1x v2x v3x
M = ( v1y v2y v3y )
v1z v2z v3z
Here, v1,v2,v3 are vectors that can be defined in properties. They correspond
to new directions of what was originally X,Y,Z axes.
exmaple matrices:
No transformation:
1 0 0
0 1 0
0 0 1
non-uniform scaling:
scaleX 0 0
0 scaleY 0
0 0 scaleZ
shearing (operation that makes regular text into italic; assuming text is in XY
plane):
1 shear 0
0 1 0
0 0 1
('shear' coefficient defines the amount of shearing. 0 is no shearing. 1 makes
the text italic by 45 degrees. -1 shears in backslash-like fashion.)
Warning. All geometry is converted to B-splines, even if it doesn't have to.
This can cause all sorts of trouble. Use only if absolutely necessary.
'''
import FreeCAD as App
if App.GuiUp:
import FreeCADGui as Gui
import Part
def makeMatrixTransformFeature():
'''makeMatrixTransformFeature(): makes a MatrixTransform parametric feature object. Returns the new object.'''
obj = App.ActiveDocument.addObject("Part::FeaturePython","Transform")
MatrixTransform(obj)
ViewProviderMatrixTransform(obj.ViewObject)
return obj
class MatrixTransform:
"The FuseCompound object"
def __init__(self,obj):
obj.addProperty("App::PropertyLink","Base","MatrixTransform","Input shape")
obj.addProperty("App::PropertyVector","v1","MatrixTransform","Vector for new X axis; first column of transform matrix.")
obj.addProperty("App::PropertyVector","v2","MatrixTransform","Vector for new Y axis; second column of transform matrix.")
obj.addProperty("App::PropertyVector","v3","MatrixTransform","Vector for new Z axis; third column of transform matrix.")
obj.v1 = App.Vector(1,0,0)
obj.v2 = App.Vector(1,1,0)
obj.v3 = App.Vector(0,0,1)
obj.Proxy = self
def execute(self,obj):
v1 = obj.v1
v2 = obj.v2
v3 = obj.v3
m = App.Matrix( v1.x, v2.x, v3.x, 0,
v1.y, v2.y, v3.y, 0,
v1.z, v2.z, v3.z, 0,
0, 0, 0, 1 )
obj.Shape = obj.Base.Shape.transformGeometry(m)
class ViewProviderMatrixTransform:
def __init__(self,vobj):
vobj.Proxy = self
def getIcon(self):
return ""
def attach(self, vobj):
self.ViewObject = vobj
self.Object = vobj.Object
def setEdit(self,vobj,mode):
return False
def unsetEdit(self,vobj,mode):
return
def __getstate__(self):
return None
def __setstate__(self,state):
return None
def claimChildren(self):
return [self.Object.Base]
def onDelete(self, feature, subelements): # subelements is a tuple of strings
try:
self.Object.Base.ViewObject.show()
except Exception as err:
App.Console.PrintError("Error in onDelete: " + str(err)) #err.message
return True
def run():
sel = Gui.Selection.getSelection()
try:
if len(sel) != 1:
raise Exception("Select a shape to transform, first! Then run this macro.")
obj = makeMatrixTransformFeature()
obj.Base = sel[0]
obj.Proxy.execute(obj)
except Exception as err:
from PySide import QtGui
mb = QtGui.QMessageBox()
mb.setIcon(mb.Icon.Warning)
mb.setText(str(err)) #err.message
mb.setWindowTitle("Macro MatrixTransform")
mb.exec_()
App.Console.PrintError("Error in onDelete: " + str(err)) #err.message
##import MatrixTransform
##MatrixTransform.run()
Macro MatrixTransform.FCMacro
#***************************************************************************
#* *
#* Copyright (c) 2015 - Victor Titov (DeepSOIC) *
#* <vv.titov@gmail.com> *
#* *
#* This program is free software; you can redistribute it and/or modify *
#* it under the terms of the GNU Lesser General Public License (LGPL) *
#* as published by the Free Software Foundation; either version 2 of *
#* the License, or (at your option) any later version. *
#* for detail see the LICENCE text file. *
#* *
#* This program is distributed in the hope that it will be useful, *
#* but WITHOUT ANY WARRANTY; without even the implied warranty of *
#* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
#* GNU Library General Public License for more details. *
#* *
#* You should have received a copy of the GNU Library General Public *
#* License along with this program; if not, write to the Free Software *
#* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
#* USA *
#* *
#***************************************************************************
__title__="Macro MatrixTransform"
__author__ = "DeepSOIC"
__doc__ = '''
Macro MatrixTransform.
Distorts geometry according to vector transformation defined by the matrix.
Matrix is defined by three vectors:
v1x v2x v3x
M = ( v1y v2y v3y )
v1z v2z v3z
Here, v1,v2,v3 are vectors that can be defined in properties. They correspond
to new directions of what was originally X,Y,Z axes.
exmaple matrices:
No transformation:
1 0 0
0 1 0
0 0 1
non-uniform scaling:
scaleX 0 0
0 scaleY 0
0 0 scaleZ
shearing (operation that makes regular text into italic; assuming text is in XY
plane):
1 shear 0
0 1 0
0 0 1
('shear' coefficient defines the amount of shearing. 0 is no shearing. 1 makes
the text italic by 45 degrees. -1 shears in backslash-like fashion.)
Instruciotns:
Select the object to be sheared, then run the macro. A new object will be
created, with shear matrix filled in by default. Edit values of v1, v2, v3 to
change the behavior.
Warning. All geometry is converted to B-splines, even if it doesn't have to.
This can cause all sorts of trouble. Use only if absolutely necessary.
'''
import MatrixTransform
MatrixTransform.run()
Run the macro
MatrixTransform.FCMacro:
import MatrixTransform
MatrixTransform.run()