Rendering学習日記

Pythonコマンドラインから、

>>> from cgkit.all import *

ちょっと時間がかかる・・・・。とりあえず球体!!!
>>> s=Sphere()
45度の回転行列を求める。
>>> s.rot=mat3().fromEulerXYZ(0.25,0,0)
>>> s.rot
(1, 0, 0)
(0, 0.968912, -0.247404)
(0, 0.247404, 0.968912)

>>> s.rot=mat3().fromEulerXYZ(0,0.25,0)
>>> s.rot
(0.968912, 0, 0.247404)
(0, 1, 0)
(-0.247404, 0, 0.968912)

>>> s.rot=mat3().fromEulerXYZ(0,0,0.25)
>>> s.rot
(0.968912, -0.247404, 0)
(0.247404, 0.968912, 0)
(0, 0, 1)



>>> for slot in s.iterSlots():
... print slot
...
angularvel
cog
dynamics
inertiatensor
linearvel
mass
pos
rot
scale
static
totalmass
transform
visible
worldtransform
>>> s.radius
1.0
>>> s.pos
(0, 0, 0)
>>> s.rot
(1, 0, 0)
(0, 1, 0)
(0, 0, 1)

>>> s.static
False
>>> s.transform
[1, 0, 0, 0]
[0, 1, 0, 0]
[0, 0, 1, 0]
[0, 0, 0, 1]

同じオブジェクトをたくさん並べてみよう
影も計算するように設定しました。
whileのインデントはきちんと整えること。

#box1.pyg

Output ("box02.tif", "tiff", "rgb", "camera", "float gain", 1, "float gamma",

 1, "string filter", "gaussian", "float[2] filterwidth", (2, 2))

Attribute ("string projection", "perspective")

Attribute ("float fov", 20)

Attribute ("int[2] resolution", (640, 480))

#placecam 10 5 -10 0 0 0

Rotate (-19.47, 1.00, 0.00, 0.00)

Rotate (45.00, 0.00, 1.00, 0.00)

Translate (-10.00, -5.00, 10.00)



Attribute ("string geometryset", "+shadows")



World ()

Light ("light1", "pointlight", "float intensity", 350, "point from", (-10, 10, -10),"string shadowname", "shadows")

Light ("light2", "pointlight", "float intensity", 350, "point from", (10, 10, -10),"string shadowname", "shadows")



mypos=-3

while mypos<=3:

    PushTransform ()

    Attribute ("color C", (1, 1, 0))

    Shader ("surface", "plastic")

    Translate ( 0, 0.5, mypos)

    Input ("BoxGeom.rib")

    PopTransform ()

    mypos+=1.3



Attribute ("color C", (1, 1, 1))

Rotate (90.00, 1.00, 0.00, 0.00)

Shader ("surface", "plastic")

Input("PlaneGeom.rib")

Render()

スポットライトをあてる。
shadingqualityを2にする。デフォルトは1。

#sphere3.pyg

Output ("sphere03.tif", "tiff", "rgb", "camera", "float gain", 1, "float gamma",

 1, "string filter", "gaussian", "float[2] filterwidth", (2, 2))

Attribute ("float shadingquality",2)

Attribute ("string projection", "perspective")

Attribute ("float fov", 10)

Attribute ("int[2] resolution", (640, 480))

#placecam -20 15 0 0 0 0

Rotate (-36.87, 1.00, 0.00, 0.00)

Rotate (-90.00, 0.00, 1.00, 0.00)

Translate (20.00, -15.00, 0.00)



Attribute ("string geometryset", "+shadows")



World ()

#Light ("light1", "pointlight", "float intensity", 4000, "point from", (-20, 50, -20),"string shadowname", "shadows")



Light ("light1", "spotlight", "string shadowname", "shadows", "point from", (-20, 50, -20), "point to", (0, 0, 0), "float intensity", 6000, "float coneangle", 90,"float shadowblur",0.01,"float shadowsamples", 4,"float shadowbias",0.1)



PushTransform ()

Attribute ("color C", (0, 0, 1))

Shader ("surface", "plastic")

Translate ( 0, 0.5, 0)

Sphere (1, -1, 1, 360)

PopTransform ()



Attribute ("color C", (1, 1, 1))

Shader ("surface", "plastic")

Rotate (90.00, 1.00, 0.00, 0.00)

Input("PlaneGeom.rib")

Render()