Rendering学習日記

guileで乱数を発生させた。毎回変化させるには、
(set! *random-state* (random-state-from-platform))
を記述しておいた。
(RiColor (Color (random 1.0) (random 1.0) (random 1.0)))
たぶん、0から1までの乱数と思われる。

#!/usr/bin/guile -s

!#



(use-modules (rman rispec))

(use-modules (rman utilities))



(RiBegin "test7.rib")

  (RiDisplay "sphere7.tif" "file" "rgb")

  (RiFormat 640 480 1)

  (RiProjection "perspective" '("fov" 40.0))

  (RiTranslate 0 0 6)

  (RiPixelFilter RiBoxFilter 1 1)

  (RiWorldBegin)

      (RiLightSource "ambientlight" (list "intensity" 0.2))

      (RiLightSource "distantlight" (list "intensity" 1.2 

                                        "uniform point from"  (Point 3 3 -3)))



(define (test x)

    (define posx -3)

    (set! *random-state* (random-state-from-platform))

    (let ((n 0))

        (while (< n x)

    (RiTransformBegin)

    (set! posx (+ posx 1 ))

    (RiTranslate posx 0 0 )

    (RiColor (Color (random 1.0) (random 1.0) (random 1.0)))

    (RiSurface "plastic")

    (RiSphere 0.5 -0.5 0.5 360)

    (set! n (+ n 1))

 (RiTransformEnd)

)))



(test 5)



  (RiWorldEnd)

(RiEnd)

sin、cosを利用した。半径１の円周上に球体を12個、配置した。
色は乱数を発生させた。

#!/usr/bin/guile -s

!#



(use-modules (rman rispec))

(use-modules (rman utilities))



(RiBegin "test8.rib")

  (RiDisplay "sphere8.tif" "file" "rgb")

  (RiFormat 640 480 1)

  (RiProjection "perspective" '("fov" 40.0))

  (RiTranslate 0 0 4)

  (RiPixelFilter RiBoxFilter 1 1)

  (RiWorldBegin)

      (RiLightSource "ambientlight" (list "intensity" 0.2))

      (RiLightSource "distantlight" (list "intensity" 1.2 

                                        "uniform point from"  (Point 3 3 -3)))



(define (test x)

    (define N1 12)

    (define PI 3.141592)

    (set! *random-state* (random-state-from-platform))

    (let ((n 0))

        (while (< n x)

    (RiTransformBegin)

    (RiTranslate (sin (* 2 (/ PI N1) n))  (cos (* 2 (/ PI N1) n))  0 )

    (RiColor (Color (random 1.0) (random 1.0) (random 1.0)))

    (RiSurface "plastic")

    (RiSphere 0.25 -0.25 0.25 360)

    (set! n (+ n 1))

 (RiTransformEnd)

)))



(test 12)



  (RiWorldEnd)

(RiEnd)

Fujiyama Renderer 0.2.1がリリースされました。既にmulti threadsでのレンダリングで速くなっている。
バンプ・マッピングができるようになりました。

sphere_uv.plyを利用してます。TextureはFujiyama RendererのDownloadsからのリンクを利用しました。以下はPython APIを利用、例です。ありがとうございます。

#!/usr/bin/env python



# 4 textured spheres with 1 dome light with an HDRI

# Copyright (c) 2011-2013 Hiroshi Tsubokawa



import fujiyama



si = fujiyama.SceneInterface()



#Plugins

si.OpenPlugin('ConstantShader')

si.OpenPlugin('PlasticShader')



#Camera

si.NewCamera('cam1', 'PerspectiveCamera')

si.SetProperty3('cam1', 'translate', 0, 0, 10)



# Rotation of dome light and dome object used for background iamge.

rot = 110



#Texture

si.NewTexture('env_tex1', '../mip/pisa.mip')

si.NewTexture('rock_tex1', '../mip/rock.mip')

si.NewTexture('rust_tex1', '../mip/rust.mip')

si.NewTexture('concrete_tex1', '../mip/concrete.mip')

si.NewTexture('pattern_tex1', '../mip/pattern.mip')



#Light

si.NewLight('light1', 'DomeLight')

si.SetProperty3('light1', 'rotate', 0, rot, 0)

# You chang the number of samples on the env map. the default is 16.

#si.SetProperty1('light1', 'sample_count', 256)

si.SetProperty1('light1', 'sample_count', 32)

si.AssignTexture('light1', 'environment_map', 'env_tex1');



#Shader

si.NewShader('sphere_shader1', 'PlasticShader')

si.AssignTexture('sphere_shader1', 'diffuse_map', 'rock_tex1')

si.AssignTexture('sphere_shader1', 'bump_map', 'rock_tex1')

si.SetProperty1('sphere_shader1', 'bump_amplitude', 1)



si.NewShader('sphere_shader2', 'PlasticShader')

si.AssignTexture('sphere_shader2', 'diffuse_map', 'rust_tex1')

si.AssignTexture('sphere_shader2', 'bump_map', 'rust_tex1')

si.SetProperty1('sphere_shader2', 'bump_amplitude', 1)



si.NewShader('sphere_shader3', 'PlasticShader')

si.AssignTexture('sphere_shader3', 'diffuse_map', 'concrete_tex1')

si.AssignTexture('sphere_shader3', 'bump_map', 'concrete_tex1')

si.SetProperty1('sphere_shader3', 'bump_amplitude', 1)



si.NewShader('sphere_shader4', 'PlasticShader')

si.AssignTexture('sphere_shader4', 'diffuse_map', 'pattern_tex1')

si.AssignTexture('sphere_shader4', 'bump_map', 'pattern_tex1')

si.SetProperty1('sphere_shader4', 'bump_amplitude', -1)



si.SetProperty3('sphere_shader4', 'diffuse', .5, .5, .5)

si.SetProperty1('sphere_shader4', 'ior', 10)



si.NewShader('dome_shader', 'ConstantShader')

si.AssignTexture('dome_shader', 'texture', 'env_tex1')



#Mesh

si.NewMesh('sphere_mesh', '../mesh/sphere_uv.mesh')

si.NewMesh('dome_mesh', '../mesh/dome.mesh')



#ObjectInstance

si.NewObjectInstance('sphere1', 'sphere_mesh')

si.SetProperty3('sphere1', 'translate', -1.7, 1.2, 0)

si.AssignShader('sphere1', 'sphere_shader1')



si.NewObjectInstance('sphere2', 'sphere_mesh')

si.SetProperty3('sphere2', 'translate', 1.7, 1.2, 0)

si.SetProperty3('sphere2', 'rotate', 0, 20, 0)

si.AssignShader('sphere2', 'sphere_shader2')



si.NewObjectInstance('sphere3', 'sphere_mesh')

si.SetProperty3('sphere3', 'translate', -1.7, -1.2, 0)

si.SetProperty3('sphere3', 'rotate', 0, 20, 0)

si.AssignShader('sphere3', 'sphere_shader3')



si.NewObjectInstance('sphere4', 'sphere_mesh')

si.SetProperty3('sphere4', 'translate', 1.7, -1.2, 0)

si.AssignShader('sphere4', 'sphere_shader4')



si.NewObjectInstance('dome1', 'dome_mesh')

si.SetProperty3('dome1', 'rotate', 0, rot, 0)

si.SetProperty3('dome1', 'scale', -.5, .5, .5)

si.AssignShader('dome1', 'dome_shader')



#ObjectGroup

# Create shadow_target for sphere1.

# Since 'DomeLight' has infinite distance, we need to exclude

# 'dome1' object which is for just background image.

si.NewObjectGroup('shadow_target1')

si.AddObjectToGroup('shadow_target1', 'sphere1')

si.AssignObjectGroup('sphere1', 'shadow_target', 'shadow_target1')

# and each sphere reacts to only 'dome1' and itself, not to the other spheres

si.NewObjectGroup('reflect_target1')

si.AddObjectToGroup('reflect_target1', 'dome1')

si.AddObjectToGroup('reflect_target1', 'sphere1')

si.AssignObjectGroup('sphere1', 'reflect_target', 'reflect_target1')



si.NewObjectGroup('shadow_target2')

si.AddObjectToGroup('shadow_target2', 'sphere2')

si.AssignObjectGroup('sphere2', 'shadow_target', 'shadow_target2')

si.NewObjectGroup('reflect_target2')

si.AddObjectToGroup('reflect_target2', 'dome1')

si.AddObjectToGroup('reflect_target2', 'sphere2')

si.AssignObjectGroup('sphere2', 'reflect_target', 'reflect_target2')



si.NewObjectGroup('shadow_target3')

si.AddObjectToGroup('shadow_target3', 'sphere3')

si.AssignObjectGroup('sphere3', 'shadow_target', 'shadow_target3')

si.NewObjectGroup('reflect_target3')

si.AddObjectToGroup('reflect_target3', 'dome1')

si.AddObjectToGroup('reflect_target3', 'sphere3')

si.AssignObjectGroup('sphere3', 'reflect_target', 'reflect_target3')



si.NewObjectGroup('shadow_target4')

si.AddObjectToGroup('shadow_target4', 'sphere4')

si.AssignObjectGroup('sphere4', 'shadow_target', 'shadow_target4')

si.NewObjectGroup('reflect_target4')

si.AddObjectToGroup('reflect_target4', 'dome1')

si.AddObjectToGroup('reflect_target4', 'sphere4')

si.AssignObjectGroup('sphere4', 'reflect_target', 'reflect_target4')



#FrameBuffer

si.NewFrameBuffer('fb1', 'rgba')



#Renderer

si.NewRenderer('ren1')

si.AssignCamera('ren1', 'cam1')

si.AssignFrameBuffer('ren1', 'fb1')

si.SetProperty2('ren1', 'resolution', 640, 480)

#si.SetProperty2('ren1', 'resolution', 160, 120)



#Rendering

si.RenderScene('ren1')



#Output

si.SaveFrameBuffer('fb1', '../bump_mapping.fb')



#Run commands

si.Run()

#si.Print()

他、Point Cloudsを試しました。こちらもサンプルPython APIを利用してます。