489 lines
20 KiB
Python
489 lines
20 KiB
Python
import bpy, os
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import numpy as np
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import mathutils
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from mathutils import Vector
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from math import pi
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from bpy.types import (
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Operator,
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Panel,
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PropertyGroup,
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)
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from bpy.props import (
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BoolProperty,
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EnumProperty,
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FloatProperty,
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IntProperty,
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StringProperty,
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PointerProperty
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)
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from .utils import *
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def change_speed_mode(self, context):
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props = context.scene.tissue_gcode
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if props.previous_speed_mode != props.speed_mode:
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if props.speed_mode == 'SPEED':
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props.speed = props.feed/60
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props.speed_vertical = props.feed_vertical/60
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props.speed_horizontal = props.feed_horizontal/60
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else:
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props.feed = props.speed*60
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props.feed_vertical = props.speed_vertical*60
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props.feed_horizontal = props.speed_horizontal*60
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props.previous_speed_mode == props.speed_mode
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return
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class tissue_gcode_prop(PropertyGroup):
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last_e : FloatProperty(name="Pull", default=5.0, min=0, soft_max=10)
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path_length : FloatProperty(name="Pull", default=5.0, min=0, soft_max=10)
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folder : StringProperty(
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name="File", default="", subtype='FILE_PATH',
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description = 'Destination folder.\nIf missing, the file folder will be used'
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)
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pull : FloatProperty(
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name="Pull", default=5.0, min=0, soft_max=10,
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description='Pull material before lift'
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)
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push : FloatProperty(
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name="Push", default=5.0, min=0, soft_max=10,
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description='Push material before start extruding'
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)
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dz : FloatProperty(
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name="dz", default=2.0, min=0, soft_max=20,
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description='Z movement for lifting the nozzle before travel'
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)
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flow_mult : FloatProperty(
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name="Flow Mult", default=1.0, min=0, soft_max=3,
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description = 'Flow multiplier.\nUse a single value or a list of values for changing it during the printing path'
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)
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feed : IntProperty(
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name="Feed Rate (F)", default=3600, min=0, soft_max=20000,
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description='Printing speed'
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)
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feed_horizontal : IntProperty(
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name="Feed Horizontal", default=7200, min=0, soft_max=20000,
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description='Travel speed'
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)
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feed_vertical : IntProperty(
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name="Feed Vertical", default=3600, min=0, soft_max=20000,
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description='Lift movements speed'
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)
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speed : IntProperty(
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name="Speed", default=60, min=0, soft_max=100,
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description='Printing speed'
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)
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speed_horizontal : IntProperty(
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name="Travel", default=120, min=0, soft_max=200,
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description='Travel speed'
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)
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speed_vertical : IntProperty(
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name="Z-Lift", default=60, min=0, soft_max=200,
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description='Lift movements speed'
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)
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esteps : FloatProperty(
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name="E Steps/Unit", default=5, min=0, soft_max=100)
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start_code : StringProperty(
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name="Start", default='', description = 'Text block for starting code'
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)
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end_code : StringProperty(
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name="End", default='', description = 'Text block for ending code'
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)
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auto_sort_layers : BoolProperty(
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name="Auto Sort Layers", default=True,
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description = 'Sort layers according to the Z of the median point'
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)
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auto_sort_points : BoolProperty(
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name="Auto Sort Points", default=False,
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description = 'Shift layer points trying to automatically reduce needed travel movements'
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)
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close_all : BoolProperty(
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name="Close Shapes", default=False,
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description = 'Repeat the starting point at the end of the vertices list for each layer'
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)
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nozzle : FloatProperty(
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name="Nozzle", default=0.4, min=0, soft_max=10,
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description='Nozzle diameter'
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)
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layer_height : FloatProperty(
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name="Layer Height", default=0.1, min=0, soft_max=10,
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description = 'Average layer height, needed for a correct extrusion'
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)
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filament : FloatProperty(
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name="Filament (\u03A6)", default=1.75, min=0, soft_max=120,
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description='Filament (or material container) diameter'
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)
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gcode_mode : EnumProperty(items=[
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("CONT", "Continuous", ""),
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("RETR", "Retraction", "")
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], default='CONT', name="Mode",
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description = 'If retraction is used, then each separated list of vertices\nwill be considered as a different layer'
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)
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speed_mode : EnumProperty(items=[
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("SPEED", "Speed (mm/s)", ""),
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("FEED", "Feed (mm/min)", "")
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], default='SPEED', name="Speed Mode",
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description = 'Speed control mode',
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update = change_speed_mode
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)
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previous_speed_mode : StringProperty(
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name="previous_speed_mode", default='', description = ''
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)
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retraction_mode : EnumProperty(items=[
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("FIRMWARE", "Firmware", ""),
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("GCODE", "Gcode", "")
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], default='GCODE', name="Retraction Mode",
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description = 'If firmware retraction is used, then the retraction parameters will be controlled by the printer'
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)
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animate : BoolProperty(
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name="Animate", default=False,
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description = 'Show print progression according to current frame'
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)
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class TISSUE_PT_gcode_exporter(Panel):
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bl_category = "Tissue Gcode"
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bl_space_type = "VIEW_3D"
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bl_region_type = "UI"
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#bl_space_type = 'PROPERTIES'
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#bl_region_type = 'WINDOW'
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#bl_context = "data"
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bl_label = "Tissue Gcode Export"
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#bl_options = {'DEFAULT_CLOSED'}
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@classmethod
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def poll(cls, context):
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try: return context.object.type in ('CURVE','MESH')
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except: return False
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def draw(self, context):
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props = context.scene.tissue_gcode
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#addon = context.user_preferences.addons.get(sverchok.__name__)
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#over_sized_buttons = addon.preferences.over_sized_buttons
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layout = self.layout
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col = layout.column(align=True)
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row = col.row()
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row.prop(props, 'folder', toggle=True, text='')
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col = layout.column(align=True)
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row = col.row()
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row.prop(props, 'gcode_mode', expand=True, toggle=True)
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#col = layout.column(align=True)
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col = layout.column(align=True)
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col.label(text="Extrusion:", icon='MOD_FLUIDSIM')
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#col.prop(self, 'esteps')
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col.prop(props, 'filament')
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col.prop(props, 'nozzle')
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col.prop(props, 'layer_height')
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col.separator()
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col.label(text="Speed (Feed Rate F):", icon='DRIVER')
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col.prop(props, 'speed_mode', text='')
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speed_prefix = 'feed' if props.speed_mode == 'FEED' else 'speed'
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col.prop(props, speed_prefix, text='Print')
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if props.gcode_mode == 'RETR':
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col.prop(props, speed_prefix + '_vertical', text='Z Lift')
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col.prop(props, speed_prefix + '_horizontal', text='Travel')
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col.separator()
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if props.gcode_mode == 'RETR':
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col = layout.column(align=True)
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col.label(text="Retraction Mode:", icon='NOCURVE')
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row = col.row()
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row.prop(props, 'retraction_mode', expand=True, toggle=True)
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if props.retraction_mode == 'GCODE':
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col.separator()
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col.label(text="Retraction:", icon='PREFERENCES')
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col.prop(props, 'pull', text='Retraction')
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col.prop(props, 'dz', text='Z Hop')
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col.prop(props, 'push', text='Preload')
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col.separator()
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#col.label(text="Layers options:", icon='ALIGN_JUSTIFY')
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col.separator()
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col.prop(props, 'auto_sort_layers', text="Sort Layers (Z)")
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col.prop(props, 'auto_sort_points', text="Sort Points (XY)")
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#col.prop(props, 'close_all')
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col.separator()
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col.label(text='Custom Code:', icon='TEXT')
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col.prop_search(props, 'start_code', bpy.data, 'texts')
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col.prop_search(props, 'end_code', bpy.data, 'texts')
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col.separator()
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row = col.row(align=True)
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row.scale_y = 2.0
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row.operator('scene.tissue_gcode_export')
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#col.separator()
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#col.prop(props, 'animate', icon='TIME')
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class tissue_gcode_export(Operator):
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bl_idname = "scene.tissue_gcode_export"
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bl_label = "Export Gcode"
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bl_description = ("Export selected curve object as Gcode file")
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bl_options = {'REGISTER', 'UNDO'}
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@classmethod
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def poll(cls, context):
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try:
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return context.object.type in ('CURVE', 'MESH')
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except:
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return False
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def execute(self, context):
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scene = context.scene
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props = scene.tissue_gcode
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# manage data
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if props.speed_mode == 'SPEED':
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props.feed = props.speed*60
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props.feed_vertical = props.speed_vertical*60
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props.feed_horizontal = props.speed_horizontal*60
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feed = props.feed
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feed_v = props.feed_vertical
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feed_h = props.feed_horizontal
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layer = props.layer_height
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flow_mult = props.flow_mult
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#if context.object.type != 'CURVE':
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# self.report({'ERROR'}, 'Please select a Curve object')
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# return {'CANCELLED'}
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ob = context.object
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matr = ob.matrix_world
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if ob.type == 'MESH':
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dg = context.evaluated_depsgraph_get()
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mesh = ob.evaluated_get(dg).data
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edges = [list(e.vertices) for e in mesh.edges]
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verts = [v.co for v in mesh.vertices]
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ordered_verts = find_curves(edges, len(mesh.vertices))
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ob = curve_from_pydata(verts, ordered_verts, name='__temp_curve__', merge_distance=0.1, set_active=False)
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vertices = [[matr @ p.co.xyz for p in s.points] for s in ob.data.splines]
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cyclic_u = [s.use_cyclic_u for s in ob.data.splines]
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if ob.name == '__temp_curve__': bpy.data.objects.remove(ob)
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if len(vertices) == 1: props.gcode_mode = 'CONT'
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export = True
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# open file
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if(export):
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if props.folder == '':
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folder = '//' + os.path.splitext(bpy.path.basename(bpy.context.blend_data.filepath))[0]
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else:
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folder = props.folder
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if '.gcode' not in folder: folder += '.gcode'
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path = bpy.path.abspath(folder)
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file = open(path, 'w')
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try:
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for line in bpy.data.texts[props.start_code].lines:
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file.write(line.body + '\n')
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except:
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pass
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#if props.gcode_mode == 'RETR':
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# sort layers (Z)
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if props.auto_sort_layers:
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sorted_verts = []
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for curve in vertices:
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# mean z
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listz = [v[2] for v in curve]
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meanz = np.mean(listz)
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# store curve and meanz
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sorted_verts.append((curve, meanz))
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vertices = [data[0] for data in sorted(sorted_verts, key=lambda height: height[1])]
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# sort vertices (XY)
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if props.auto_sort_points:
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# curves median point
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median_points = [np.mean(verts,axis=0) for verts in vertices]
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# chose starting point for each curve
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for j, curve in enumerate(vertices):
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# for closed curves finds the best starting point
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if cyclic_u[j]:
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# create kd tree
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kd = mathutils.kdtree.KDTree(len(curve))
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for i, v in enumerate(curve):
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kd.insert(v, i)
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kd.balance()
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if props.gcode_mode == 'RETR':
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if j==0:
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# close to next two curves median point
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co_find = np.mean(median_points[j+1:j+3],axis=0)
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elif j < len(vertices)-1:
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co_find = np.mean([median_points[j-1],median_points[j+1]],axis=0)
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else:
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co_find = np.mean(median_points[j-2:j],axis=0)
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#flow_mult[j] = flow_mult[j][index:]+flow_mult[j][:index]
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#layer[j] = layer[j][index:]+layer[j][:index]
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else:
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if j==0:
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# close to next two curves median point
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co_find = np.mean(median_points[j+1:j+3],axis=0)
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else:
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co_find = vertices[j-1][-1]
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co, index, dist = kd.find(co_find)
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vertices[j] = vertices[j][index:]+vertices[j][:index+1]
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else:
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if j > 0:
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p0 = curve[0]
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p1 = curve[-1]
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last = vertices[j-1][-1]
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d0 = (last-p0).length
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d1 = (last-p1).length
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if d1 < d0: vertices[j].reverse()
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'''
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# close shapes
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if props.close_all:
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for i in range(len(vertices)):
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vertices[i].append(vertices[i][0])
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#flow_mult[i].append(flow_mult[i][0])
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#layer[i].append(layer[i][0])
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'''
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# calc bounding box
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min_corner = np.min(vertices[0],axis=0)
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max_corner = np.max(vertices[0],axis=0)
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for i in range(1,len(vertices)):
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eval_points = vertices[i] + [min_corner]
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min_corner = np.min(eval_points,axis=0)
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eval_points = vertices[i] + [max_corner]
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max_corner = np.max(eval_points,axis=0)
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# initialize variables
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e = 0
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last_vert = Vector((0,0,0))
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maxz = 0
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path_length = 0
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travel_length = 0
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printed_verts = []
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printed_edges = []
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travel_verts = []
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travel_edges = []
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# write movements
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for i in range(len(vertices)):
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curve = vertices[i]
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first_id = len(printed_verts)
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for j in range(len(curve)):
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v = curve[j]
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v_flow_mult = flow_mult#[i][j]
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v_layer = layer#[i][j]
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# record max z
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maxz = np.max((maxz,v[2]))
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#maxz = max(maxz,v[2])
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# first point of the gcode
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if i == j == 0:
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printed_verts.append(v)
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if(export):
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file.write('G92 E0 \n')
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params = v[:3] + (feed,)
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to_write = 'G1 X{0:.4f} Y{1:.4f} Z{2:.4f} F{3:.0f}\n'.format(*params)
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file.write(to_write)
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else:
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# start after retraction
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if j == 0 and props.gcode_mode == 'RETR':
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if(export):
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params = v[:2] + (maxz+props.dz,) + (feed_h,)
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to_write = 'G1 X{0:.4f} Y{1:.4f} Z{2:.4f} F{3:.0f}\n'.format(*params)
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file.write(to_write)
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params = v[:3] + (feed_v,)
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to_write = 'G1 X{0:.4f} Y{1:.4f} Z{2:.4f} F{3:.0f}\n'.format(*params)
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file.write(to_write)
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to_write = 'G1 F{:.0f}\n'.format(feed)
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file.write(to_write)
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if props.retraction_mode == 'GCODE':
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e += props.push
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file.write( 'G1 E' + format(e, '.4f') + '\n')
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else:
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file.write('G11\n')
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printed_verts.append((v[0], v[1], maxz+props.dz))
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travel_edges.append((len(printed_verts)-1, len(printed_verts)-2))
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travel_length += (Vector(printed_verts[-1])-Vector(printed_verts[-2])).length
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printed_verts.append(v)
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travel_edges.append((len(printed_verts)-1, len(printed_verts)-2))
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travel_length += maxz+props.dz - v[2]
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# regular extrusion
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else:
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printed_verts.append(v)
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v1 = Vector(v)
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v0 = Vector(curve[j-1])
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dist = (v1-v0).length
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area = v_layer * props.nozzle + pi*(v_layer/2)**2 # rectangle + circle
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cylinder = pi*(props.filament/2)**2
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flow = area / cylinder * (0 if j == 0 else 1)
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e += dist * v_flow_mult * flow
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params = v[:3] + (e,)
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if(export):
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to_write = 'G1 X{0:.4f} Y{1:.4f} Z{2:.4f} E{3:.4f}\n'.format(*params)
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file.write(to_write)
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path_length += dist
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printed_edges.append([len(printed_verts)-1, len(printed_verts)-2])
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if props.gcode_mode == 'RETR':
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v0 = Vector(curve[-1])
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if props.close_all and False:
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#printed_verts.append(v0)
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printed_edges.append([len(printed_verts)-1, first_id])
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v1 = Vector(curve[0])
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dist = (v0-v1).length
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area = v_layer * props.nozzle + pi*(v_layer/2)**2 # rectangle + circle
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cylinder = pi*(props.filament/2)**2
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flow = area / cylinder
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e += dist * v_flow_mult * flow
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params = v1[:3] + (e,)
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if(export):
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to_write = 'G1 X{0:.4f} Y{1:.4f} Z{2:.4f} E{3:.4f}\n'.format(*params)
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file.write(to_write)
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path_length += dist
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v0 = v1
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if i < len(vertices)-1:
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if(export):
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if props.retraction_mode == 'GCODE':
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e -= props.pull
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file.write('G0 E' + format(e, '.4f') + '\n')
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else:
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file.write('G10\n')
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params = v0[:2] + (maxz+props.dz,) + (feed_v,)
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to_write = 'G1 X{0:.4f} Y{1:.4f} Z{2:.4f} F{3:.0f}\n'.format(*params)
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file.write(to_write)
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printed_verts.append(v0.to_tuple())
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printed_verts.append((v0.x, v0.y, maxz+props.dz))
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travel_edges.append((len(printed_verts)-1, len(printed_verts)-2))
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travel_length += maxz+props.dz - v0.z
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if(export):
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# end code
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try:
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for line in bpy.data.texts[props.end_code].lines:
|
|
file.write(line.body + '\n')
|
|
except:
|
|
pass
|
|
file.close()
|
|
print("Saved gcode to " + path)
|
|
bb = list(min_corner) + list(max_corner)
|
|
info = 'Bounding Box:\n'
|
|
info += '\tmin\tX: {0:.1f}\tY: {1:.1f}\tZ: {2:.1f}\n'.format(*bb)
|
|
info += '\tmax\tX: {3:.1f}\tY: {4:.1f}\tZ: {5:.1f}\n'.format(*bb)
|
|
info += 'Extruded Filament: ' + format(e, '.2f') + '\n'
|
|
info += 'Extruded Volume: ' + format(e*pi*(props.filament/2)**2, '.2f') + '\n'
|
|
info += 'Printed Path Length: ' + format(path_length, '.2f') + '\n'
|
|
info += 'Travel Length: ' + format(travel_length, '.2f')
|
|
'''
|
|
# animate
|
|
if scene.animate:
|
|
scene = bpy.context.scene
|
|
try:
|
|
param = (scene.frame_current - scene.frame_start)/(scene.frame_end - scene.frame_start)
|
|
except:
|
|
param = 1
|
|
last_vert = max(int(param*len(printed_verts)),1)
|
|
printed_verts = printed_verts[:last_vert]
|
|
printed_edges = [e for e in printed_edges if e[0] < last_vert and e[1] < last_vert]
|
|
travel_edges = [e for e in travel_edges if e[0] < last_vert and e[1] < last_vert]
|
|
'''
|
|
return {'FINISHED'}
|