Light

Full name Microsoft.VisualBasic.Imaging.Drawing3D.Light Assembly Microsoft.VisualBasic.Imaging Members 5

Surface的表面光照的计算

01 Syntax

Microsoft.VisualBasic.Imaging.Drawing3D.Light

02 Methods

Name	Overloads	Summary
ComputeLighting	1	Lambert diffuse + ambient shading.
Lighting	1	对模型之中的某一个表面进行光照处理
Shade	1	Shade baseColor toward lightColor by factor (in [0,1]).
ScaleLightColor	1	按亮度系数缩放灯光颜色（降低亮度可削弱被照亮面的发白）。
LightDirFromAngles	1	由仰角/方位角（度）构造指向光源的单位向量。

03 Members

method ComputeLighting #

ComputeLighting(Point3D(), Point3D, Color, Double, Color)

Lambert diffuse + ambient shading. Computes the face normal from the first three vertices, orients it toward the viewer, and blends the base color toward the light color by the lit amount. Degenerate faces (zero normal) keep the base color.

Parameters

Name	Type	Description
`vertices`	Point3D()	vertices forming one face of the model
`lightDirection`	Point3D	unit vector pointing toward the light source
`baseColor`	`Color`	intrinsic surface color
`ambientStrength`	`Double`	ambient term in [0,1]
`lightColor`	`Color`	light color, usually white

method Lighting #

Lighting(Path3D, Point3D, Color, Double, Color)

对模型之中的某一个表面进行光照处理

Parameters

Name	Type	Description
`path`	Path3D	这个对象是一个平面
`lightDirection`	Point3D	unit vector pointing toward the light source
`baseColor`	`Color`	intrinsic surface color
`ambientStrength`	`Double`	ambient term in [0,1]
`lightColor`	`Color`	light color, usually white

method Shade #

Shade(Color, Color, Double)

Shade baseColor toward lightColor by factor (in [0,1]).

method ScaleLightColor #

ScaleLightColor(Color, Double)

按亮度系数缩放灯光颜色（降低亮度可削弱被照亮面的发白）。

method LightDirFromAngles #

LightDirFromAngles(Int32, Int32)

由仰角/方位角（度）构造指向光源的单位向量。