折射率（Refractive index）
[RS0 rendering for high effect circular noi, S1 noi polygon]
[any object will absorb part of the light so as not to t the reflection as
RGB 255 (Chun Bai). In this way, Maxwell los contrast when rendering,
And generate noi. Becau Maxwell has to calculate the amount of light between different objects
The result of reflection. If you want to render a blank sheet of paper, GB 218 will do
Parameter points:
1.--------Reflectance (0 degrees) [e the color of the object]
Reflection of material. You can choo the color of the color through the color picker,
[specify a texture by next to the texture button]. You can decide whether or not to u the texture, the left of the over texture button, the checkbox.天欲雪
[white reflections mean that all light is reflected, and color means all the light is absorbed]
Red means that the red component of light is reflected only when
it is projected onto the object.
When objects are viewed straight from the front or from 90 degrees (oblique angles), the light reflection determines two reflective colors.
The different reflection effects formed by different angles [the Fresnel effect (the more inclined the angle is, the greater the reflectivity is, the less the transmittance is]).
Normally, for a conventional object, the eflectance 90o color is white, and you can still change the reflected color to other colors,
2.--------Reflectance (90 degrees) [if it is a smooth object, the color of the reflective area, often without changing, white]
Set to default white.
3.-------Transmittance[to do with a reddish pattern (that is transparent) translucent curtains for example, t the color to a red button, after a specified texture texture pattern.
发财树Of light to control light passing through an object and its attenuation.
Click the color picker to lect a transmittance color, and assign a texture by this texture button. The color is the color that is obtained when the light reaches the falloff distance.
Visibility (transmittance) parameters are ud to t what light can pass through objects
For example, tting a black = any light can through this object,
Of cour, once t to RGB1 (also black), there is light transmittance
4.--------Attenuation distance [ud in conjunction with Transmittance, such as translucent curtains for 5 mm (non nm)]
Attenuation distance. This parameter is cloly related to transmittance and controls the intensity of attenuation.
阳光分班For example, a sphere has a diameter of 10cm and ts the attenuation value of its transparent material to two times - 20cm
If the attenuation distance is very small (1 nm), the body will be opaque, and if this distance is great, it feels almost transparent. The attenuation is specified by an exponential curve, and the thicker the body, the stronger the line will be.
鸡蛋饺But the glass must be no less than 3mm, t to 1.55, and can be t higher, such as 1.63.
5.--------ND refraction
What is ND? Why is it called ND? The maximum speed of light is in vacuum. When light travels through a den mass, it slows
down. Bending occurs when light is moved from one substance to another of different density. If you put toilet paper in the water of the cup, you will e the effect. This is refraction.
The degree of refraction depends on the density difference between the two materials, which requires a basis for comparison. The definition is this: refractive index is the degree of bending that occurs when light enters this material from the vacuum. The refractive index of a vacuum is 1. Refraction occurs when light enters other materials, and the refractive index of other materials is greater than 1.
Another phenomenon is that different wavelengths of light do not reflect the same degree of refraction. The slight difference in the angle of refraction caus white light to disper into ven colored lights that make up it, a rainbow pattern. This phenomenon is called dispersion. In general, the degree of dispersion is very small, and as far as possible, the removal of dispersion options in Maxwell can speed up rendering.
Since the refractive index of the light of different wavelengths is different, it is necessary to define the refractive index of the material. It is necessary to define the light with a single wavelength. The light is defined as wavelength 589.29 nm (sodium yellow light). That means "d" in ND.
Opaque materials can also be applied to nd values, metals and plastics. Their refractive index is much larger than water, becau they are denr than water and absorb more light (e
below for interest). That's why the plastic is t at 3 nd, and the metal is even higher.
干部能力提升6.--------Roughness
Roughness. The surface roughness ranges from 0 (very bright surface) to 99 (almost pure scattering), and the lected Lambertian check box will u a perfect diffusion model (like 100% roughness). You can also t a texture to control roughness.聚生网管
Transparent glass, t to 0
牛男**************** about what t of **************** transparent curtain
Attenuation distance (attenuation) and visibility (transmittance) are related and interact with each other.
艺术活动For example, you t a 1 cm thick object with a decay distance of 10 cm (only a few light is absorbed), but t the visibility of RGB 0 (Chun Hei), is this object still opaque?. You need to t visibility at least
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RGB 1 will play a role in reducing distance.
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Similarly, if the visibility is green and green glass is not
