matrix_in_mk2.py

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#
#  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.
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import bpy
import mathutils
from bpy.props import FloatProperty, FloatVectorProperty, BoolProperty
from sverchok.node_tree import SverchCustomTreeNode
from sverchok.data_structure import (matrixdef, Vector_generate, updateNode, match_long_repeat)

def matrix_in(params):
    loc, scale, rot, angle, rotA = params
    max_l = max(len(loc), len(scale), len(rot), len(angle), len(rotA))
    orig = []
    for l in range(max_l):
        M = mathutils.Matrix()
        orig.append(M)
    matrixes = matrixdef(orig, [loc], [scale], [rot], [angle], [rotA])
    return matrixes

class SvMatrixGenNodeMK2(SverchCustomTreeNode, bpy.types.Node):
    """
    Triggers: From loc, scale, rot
    Tooltip:  Creates a transformation Matrix by defining its Location, Scale and Rotation.

    """
    bl_idname = 'SvMatrixGenNodeMK2'
    bl_label = 'Matrix in'
    bl_icon = 'OUTLINER_OB_EMPTY'
    sv_icon = 'SV_MATRIX_IN'

    replacement_nodes = [('SvMatrixInNodeMK4', dict(Rotation="Axis"), dict(Matrix = "Matrices"))]

    l_: FloatVectorProperty(
        name='L', default=(0.0, 0.0, 0.0), description='Location', precision=3, update=updateNode)
    s_: FloatVectorProperty(
        name='S', default=(1.0, 1.0, 1.0), description='Scale', precision=3, update=updateNode)
    r_: FloatVectorProperty(
        name='R', default=(0.0, 0.0, 1.0), description='Rotation', precision=3, update=updateNode)
    a_: FloatProperty(
        name='A', description='Angle', default=0.0, precision=3, update=updateNode)

    flat_output: BoolProperty(
        name="Flat output",
        description="Flatten output by list-joining level 1",
        default=True,
        update=updateNode)

    def sv_init(self, context):

        inew = self.inputs.new
        inew('SvVerticesSocket', "Location").prop_name = 'l_'
        inew('SvVerticesSocket', "Scale").prop_name = 's_'
        inew('SvVerticesSocket', "Rotation").prop_name = 'r_'
        inew('SvStringsSocket', "Angle").prop_name = 'a_'

        self.outputs.new('SvMatrixSocket', "Matrix")

    def draw_buttons_ext(self, context, layout):
        layout.prop(self, "flat_output", text="Flat Output", expand=False)

    def rclick_menu(self, context, layout):
        layout.prop(self, "flat_output", text="Flat Output", expand=False)
        self.node_replacement_menu(context, layout)

    def process(self):
        L, S, R, A = self.inputs
        Ma = self.outputs[0]
        if not Ma.is_linked:
            return

        loc = Vector_generate(L.sv_get())
        scale = Vector_generate(S.sv_get())
        rot = Vector_generate(R.sv_get())
        rotA, angle = [[]], [[0.0]]

        # ability to add vector & vector difference instead of only rotation values
        if A.is_linked:
            if A.links[0].from_socket.bl_idname == 'SvVerticesSocket':
                rotA = Vector_generate(A.sv_get())
                angle = [[]]
            elif A.links[0].from_socket.bl_idname == 'SvStringsSocket':
                angle = A.sv_get()
                rotA = [[]]
        else:
            angle = A.sv_get()
            rotA = [[]]

        result = []

        m_add = result.extend if  self.flat_output else result.append
        params = match_long_repeat([loc, scale, rot, angle, rotA])

        for par in zip(*params):
            matrixes = matrix_in(par)
            m_add(matrixes)

        Ma.sv_set(result)


def register():
    bpy.utils.register_class(SvMatrixGenNodeMK2)


def unregister():
    bpy.utils.unregister_class(SvMatrixGenNodeMK2)