import os

import FreeCADGui as Gui
import FreeCAD as App

class AHB_Render:
    def GetResources(self):
        return {"MenuText": "Render",
                "ToolTip": "Render to images",
                "Pixmap": ""
                }

    def IsActive(self):
        return True

    def set_render_lines(self, line_color = (0.0,0.0,0.0,0.0), background_color = (1.0,1.0,1.0,0.0)):
        doc = App.activeDocument()
        for obj in doc.Objects:
            if obj.TypeId == 'Part::Feature':
                if 'AssemblyHandbook_Stage' in obj.PropertiesList:
                    obj.ViewObject.DisplayMode = 'Flat Lines'
                    obj.ViewObject.ShapeMaterial.AmbientColor = (0.0, 0.0, 0.0, 0.0)
                    obj.ViewObject.ShapeMaterial.EmissiveColor = background_color
                    obj.ViewObject.LineColor = line_color

    def set_render_outlines(self):
        doc = App.activeDocument()
        step = 8
        r = step
        g = step
        b = step
        for obj in doc.Objects:
            if obj.TypeId == 'Part::Feature':
                if 'AssemblyHandbook_Stage' in obj.PropertiesList:
                    obj.ViewObject.DisplayMode = 'Shaded'
                    obj.ViewObject.ShapeMaterial.AmbientColor = (0.0, 0.0, 0.0, 0.0)
                    obj.ViewObject.ShapeMaterial.DiffuseColor = (0.0, 0.0, 0.0, 0.0)
                    obj.ViewObject.ShapeMaterial.SpecularColor = (0.0, 0.0, 0.0, 0.0)
                    obj.ViewObject.ShapeMaterial.EmissiveColor = (r/255.0, g/255.0, b/255.0, 0.0)

                    r = r + step
                    if r >= 256 - step:
                        r = step
                        g = g + step
                        if g >= 256 - step:
                            g = step
                            b = b + step
                            if b >= 256 - step:
                                b = step

    def Activated(self):
        resolution = (512, 512)

        self.set_render_lines()
        Gui.ActiveDocument.ActiveView.saveImage("/home/youen/dev_linux/vhelio-render/vhelio.png", resolution[0], resolution[1], "#ffffff")

        self.set_render_outlines()
        Gui.ActiveDocument.ActiveView.saveImage("/home/youen/dev_linux/vhelio-render/vhelio-shapes.png", resolution[0]*2, resolution[1]*2, "#ffffff")

        from PIL import Image
        import time
        lines = Image.open("/home/youen/dev_linux/vhelio-render/vhelio.png")
        lines = lines.convert("L")
        shapes = Image.open("/home/youen/dev_linux/vhelio-render/vhelio-shapes.png")
        startTime = time.perf_counter()
        for xb in range(1, lines.size[0]-1):
            for yb in range(1, lines.size[1]-1):
                outline_color = 1.0
                for x in range(xb*2, xb*2+2):
                    for y in range(yb*2, yb*2+2):
                        c = shapes.getpixel((x, y))
                        border = False
                        if c != shapes.getpixel((x - 1, y - 1)): border = True
                        if c != shapes.getpixel((x, y - 1)): border = True
                        if c != shapes.getpixel((x + 1, y - 1)): border = True
                        if c != shapes.getpixel((x - 1, y)): border = True
                        if c != shapes.getpixel((x, y)): border = True
                        if c != shapes.getpixel((x + 1, y)): border = True
                        if c != shapes.getpixel((x - 1, y + 1)): border = True
                        if c != shapes.getpixel((x, y + 1)): border = True
                        if c != shapes.getpixel((x + 1, y + 1)): border = True
                        if border: outline_color = outline_color - 0.25
                lines.putpixel((xb, yb), min(lines.getpixel((xb, yb)), int(outline_color * 255.0)))
        endTime = time.perf_counter()
        print("Outline detection: " + str(round((endTime - startTime)*1000)/1000) + "s")
        lines.save("/home/youen/dev_linux/vhelio-render/vhelio-final.png")

from ahb_command import AHB_CommandWrapper
AHB_CommandWrapper.addGuiCommand('AHB_render', AHB_Render())