3D照明(OpenGl) [英] 3D Lighting (OpenGl)

问题描述

我已经问过这个问题，但没有得到答案.顺便说一句，我发现了一些新东西.我想显示一个由实体作品导出的wrl文件中的3D模型.该文件包含三角形的顶点，我正在用glBegin(GL_TRIANGLES)绘制它们，但是它看起来并不好，并且没有似乎相当3D！我尝试了gluSphere以相同的照明设置在该场景中绘制一个球体，它看起来非常好，而且是3D的！！！
Glu有什么事吗?
我应该使用Glu绘制三角形吗?

I already asked this question but I didn't get my answer. Btw I found some thing new.I want to show a 3D model from a wrl file exported by solid works.The file contains triangle's vertices and I am drawing them with glBegin(GL_TRIANGLES), But it doesn't looks nice and doesn't seems quite 3D! I tried gluSphere to draw an sphere in that scene with same lighting setting and it seems very nice and 3D!!!!
Is there some thing about Glu ?
Should I use Glu for draw triangles?

推荐答案

要获得良好的阴影，还应提供三角形的法线.

To get a good shading you should also supply normals for the triangles.

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