Source

py2scad / py2scad / transforms.py

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"""
Copyright 2010  IO Rodeo Inc.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

    http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
"""
import base
import utility

# Assembly creation ----------------------------------------------------------

class Assembly(base.SCAD_CMP_Object):
    """Create a reusable assembly (module) object."""
    def __init__(self, obj, name, parameters=[], *args, **kwargs):
        base.SCAD_CMP_Object.__init__(self, obj, **kwargs)
        self.name = name
        # Filter out any non-string arguments (unicode removed from py3)
        self.args = parameters

    def cmd_str(self,tab_level=0):
        """Outputs the module signature."""
        return 'module {0}({1})'.format(self.name, ', '.join(arg for arg in self.args))

    def __call__(self, mod='', *args):
        """Returns a string calling this module with provided arguments."""
        if mod and not mod in list('*!#%'): # mod can eat he first arg
            args = (mod,) + args
            mod = ''
        if len(args) > len(self.args):
            raise TypeError("{0}() takes exactly {1} argument(s) ({2} given)".format(self.name, len(self.args), len(args)))
        return "{0}{1}({2});".format(mod, self.name,
                ', '.join(utility.val_to_str(arg) for arg in args))

# 3D transformations ---------------------------------------------------------

class Scale(base.SCAD_CMP_Object):
    """Scale contained object along local x,y,z."""
    def __init__(self,obj,v=[1.0,1.0,1.0], *args, **kwargs):
        base.SCAD_CMP_Object.__init__(self, obj, *args, **kwargs)
        self.v = v

    def cmd_str(self,tab_level=0):
        v_str = utility.val_to_str(self.v)
        return 'scale(v=%s)'%(v_str)

class Rotate(base.SCAD_CMP_Object):
    """Rotate contained objects."""

    def __init__(self, obj, v=[1.0,0.0,0.0], a=None, *args, **kwargs):
        base.SCAD_CMP_Object.__init__(self, obj, *args, **kwargs)
        self.v = v
        self.a = a

    def cmd_str(self,tab_level=0):
        v_str = utility.val_to_str(self.v)
        if self.a: # If there's an angle use axis/angle
            a_str = utility.val_to_str(self.a)
            return 'rotate(a=%s,v=%s)'%(a_str,v_str)
        # If not a then interpret v as a vector of angles
        return 'rotate(a=%s)'%(v_str)


class AnimRotate(base.SCAD_CMP_Object):

    def __init__(self,obj,a=0.0,v=[0.0,0.0,0.0], *args, **kwargs):
        base.SCAD_CMP_Object.__init__(self, obj, *args, **kwargs)
        self.a = a
        self.v = v

    def cmd_str(self,tab_level=0):
        return 'rotate(a=%s,v=%s)'%(self.a,self.v)

class Translate(base.SCAD_CMP_Object):

    def __init__(self,obj,v=[0.0,0.0,0.0], *args, **kwargs):
        base.SCAD_CMP_Object.__init__(self, obj, *args, **kwargs)
        self.v = v

    def cmd_str(self,tab_level=0):
        v_str = utility.val_to_str(self.v)
        return 'translate(v=%s)'%(v_str,)

class AnimTranslate(base.SCAD_CMP_Object):

    def __init__(self,obj,v=[0.0,0.0,0.0], *args, **kwargs):
        base.SCAD_CMP_Object.__init__(self, obj, *args, **kwargs)
        self.v = v

    def cmd_str(self,tab_level=0):
        return 'translate(v=%s)'%(self.v,)

class Mirror(base.SCAD_CMP_Object):

    def __init__(self,obj,v=[1.0,0.0,0.0], *args, **kwargs):
        base.SCAD_CMP_Object.__init__(self, obj, *args, **kwargs)
        self.v = v

    def cmd_str(self,tab_level=0):
        v_str = utility.val_to_str(self.v)
        return 'mirror(v=%s)'%(v_str,)

class MultMatrix(base.SCAD_CMP_Object):

    #######################################
    # NOT DONE
    #######################################

    def __init__(self,obj):
        base.SCAD_CMP_Object.__init__(self, obj, *args, **kwargs)
        pass

class Color(base.SCAD_CMP_Object):

    def __init__(self,obj,rgba=[0.5, 0.5, 0.5, 1.0], *args, **kwargs):
        base.SCAD_CMP_Object.__init__(self, obj, *args, **kwargs)
        self.rgba = rgba
        assert self.rgba_ok(), 'rgba values must be in [0,1]'

    def cmd_str(self,tab_level=0):
        rgba_str = utility.val_to_str(self.rgba)
        return 'color(%s)'%(rgba_str,)

    def rgba_ok(self):
        for x in self.rgba:
            if x < 0.0 or x > 1.0:
                return False
        return True

# CGS Operations -------------------------------------------------------------

class Union(base.SCAD_CMP_Object):

    def cmd_str(self,tab_level=0):
        return 'union()'

class Difference(base.SCAD_CMP_Object):

    def cmd_str(self,tab_level=0):
        return 'difference()'

class Intersection(base.SCAD_CMP_Object):

    def cmd_str(self,tab_level=0):
        return 'intersection()'

# 2D to 3D Extrusion -----------------------------------------------------------

class Linear_Extrude(base.SCAD_CMP_Object):

    def __init__(self,obj,h=1, twist=0, center=True, convexity=5,
                 slices=None, *args, **kwargs):
        base.SCAD_CMP_Object.__init__(self,obj,center=center, *args, **kwargs)
        self.h = h
        self.twist = twist
        self.convexity = convexity
        try:
            self.slices = slices
        except TypeError:
            self.slices = None

    def cmd_str(self,tab_level=0):
        h_str = utility.val_to_str(self.h)
        twist_str = utility.val_to_str(self.twist)
        center_str = self.center_str()
        if self.slices == None:
            str_tup = (h_str,twist_str,center_str,self.convexity)
            rtn_str = 'linear_extrude(height=%s,twist=%s,center=%s,convexity=%d)'%str_tup
        else:
            str_tup = (h_str,twist_str,center_str,self.convexity,self.slices)
            rtn_str = 'linear_extrude(height=%s,twist=%s,center=%s,convexity=%d,slices=%d)'%str_tup
        return rtn_str

class Linear_DXF_Extrude(base.SCAD_Object):

    def __init__(self, filename, height=1.0, layer=None, center=True,
                 convexity=10, twist=0, *args, **kwargs):
        base.SCAD_Object.__init__(self, center=center, *args, **kwargs)
        self.filename = filename
        self.height = height
        self.layer = layer
        self.twist = twist
        self.convexity = convexity

    def cmd_str(self, tab_level=0):
        arg_str = 'file="%s"'%(self.filename,)
        if not self.layer == None:
            arg_str = '%s, layer=%s'%(arg_str,self.layer,)
        arg_str = '%s, height=%f'%(arg_str,self.height)
        arg_str = '%s, center=%s'%(arg_str,self.center_str())
        arg_str = '%s, convexity=%d'%(arg_str,self.convexity)
        arg_str = '%s, twist=%f'%(arg_str,self.twist)
        return 'linear_extrude(%s);'%(arg_str,)

class Rotate_Extrude(base.SCAD_CMP_Object):

    def __init__(self,obj,convexity=5, *args, **kwargs):
        base.SCAD_CMP_Object.__init__(self, obj, *args, **kwargs)
        self.convexity = convexity

    def cmd_str(self,tab_level=0):
        rtn_str = 'rotate_extrude(convexity=%d)'%(self.convexity,)
        return rtn_str


# 3D to 2D projection ---------------------------------------------------------

class Projection(base.SCAD_CMP_Object):

    def __init__(self,obj,cut=True, *args, **kwargs):
        base.SCAD_CMP_Object.__init__(self, obj, *args, **kwargs)
        self.cut = cut

    def cmd_str(self,tab_level=0):
        cut_str = '%s'%(self.cut,)
        cut_str = cut_str.lower()
        return 'projection(cut=%s)'%(cut_str,)