Apply Visual Effects on Saving 3D Views

Using Aspose.3D for Python via .NET API, developers may apply visual effects on 3D Views before saving in the image. These visual effects are also known as the post-processing effects or filters those are applied in real-time to everything displayed in the 3D View.

Apply Visual Effects on 3D View

The get_post_processing method of the Renderer class allows to create any supported visual effect. The Renderer class offers a post_processings member to apply various filters, the Add method of the PostProcessings class allows to incorporate a filter before rendering.

Programming Sample

This code example applies visual effect on a 3D view.

from aspose import pycore
from aspose.pydrawing import Color
from aspose.pydrawing.imaging import ImageFormat
from aspose.threed import Scene
from aspose.threed.entities import Camera, Light, LightType
from aspose.threed.render import ITexture2D, RenderParameters, Renderer
from aspose.threed.utilities import RelativeRectangle, Vector3

#  For complete examples and data files, please go to https:# github.com/aspose-3d/Aspose.3D-for-.NET
#  Load an existing 3D scene
scene = Scene("data-dir"  + "scene.obj")
#  Create an instance of the camera
camera = Camera()
scene.root_node.create_child_node("camera", camera).transform.translation = Vector3(2, 44, 66)
#  Set the target
camera.look_at = Vector3(50, 12, 0)
light = Light()
light.color = Vector3(Color.white)
light.light_type = LightType.POINT
#  Create a light
scene.root_node.create_child_node("light", light).transform.translation = Vector3(26, 57, 43)
#  The CreateRenderer will create a hardware OpenGL-backend renderer, more renderer will be added in the future
#  And some internal initializations will be done.
#  When renderer left using by scope, unmanaged hardware resources will also be disposed
with Renderer.create_renderer() as renderer:
    renderer.enable_shadows = False
    #  Create a new render target that renders to scene to texture(s)
    #  Use default render parameters
    #  And one output targets
    #  Size is 1024 x 1024
    #  This render target can have multiple render output textures, but here we only need one output.
    #  The other textures and depth textures are mainly used by deferred shading in the future.
    #  But you can also access depth texture through IRenderTexture.DepthTeture
    with renderer.render_factory.create_render_texture(RenderParameters(), 1, 1024, 1024) as rt:
        rectangle = RelativeRectangle()
        rectangle.scale_width = 1.0
        rectangle.scale_height = 1 .0
        #  This render target has one viewport to render, the viewport occupies 100% width and 100% height
        vp = rt.create_viewport(camera, rectangle)
        #  Render to target and save the target texture to external file
        renderer.render(rt)
        pycore.cast(ITexture2D, rt.targets[0]).save("out"  + "Original_viewport_out.png", ImageFormat.png)
        #  Create a post-processing effect
        pixelation = renderer.get_post_processing("pixelation")
        renderer.post_processings.append(pixelation)
        renderer.render(rt)
        pycore.cast(ITexture2D, rt.targets[0]).save("out"  + "VisualEffect_pixelation_out.png", ImageFormat.png)
        #  Clear previous post-processing effects and try another one
        grayscale = renderer.get_post_processing("grayscale")
        renderer.post_processings.clear()
        renderer.post_processings.append(grayscale)
        renderer.render(rt)
        pycore.cast(ITexture2D, rt.targets[0]).save("out"  + "VisualEffect_grayscale_out.png", ImageFormat.png)
        #  We can also combine post-processing effects
        renderer.post_processings.clear()
        renderer.post_processings.append(grayscale)
        renderer.post_processings.append(pixelation)
        renderer.render(rt)
        pycore.cast(ITexture2D, rt.targets[0]).save("out"  + "VisualEffect_grayscale+pixelation_out.png", ImageFormat.png)
        #  Clear previous post-processing effects and try another one
        edgedetection = renderer.get_post_processing("edge-detection")
        renderer.post_processings.clear()
        renderer.post_processings.append(edgedetection)
        renderer.render(rt)
        pycore.cast(ITexture2D, rt.targets[0]).save("out"  + "VisualEffect_edgedetection_out.png", ImageFormat.png)
        #  Clear previous post-processing effects and try another one
        blur = renderer.get_post_processing("blur")
        renderer.post_processings.clear()
        renderer.post_processings.append(blur)
        renderer.render(rt)
        pycore.cast(ITexture2D, rt.targets[0]).save("out"  + "VisualEffect_blur_out.png", ImageFormat.png)