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GameMath-Chapter 10 다각형기법

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GameMath-Chapter 10 다각형기법

  1. 1. Chapter 10. 다각형 기법 발표자 허창오 [email_address]
  2. 2. Chapter 10. 다각형 기법 <ul><li>Goals </li></ul><ul><ul><li>다각형 줄이기 알고리즘 습득 </li></ul></ul><ul><ul><li>테셀레이션 이란 ? </li></ul></ul><ul><li>Why we use mesh simplification & tessellation? </li></ul><ul><ul><li>게임의 속도 향상을 위해 </li></ul></ul>
  3. 3. 01. Mesh simplification <ul><li>우리는 공간상에 오브젝트를 표현할 때 다각형을 이용한다 -> 기본은 삼각형!! </li></ul><ul><li>만약 오브젝트가 멀리 있다면?? </li></ul>
  4. 4. 01. Mesh simplification <ul><li>기본 개념 </li></ul><ul><ul><li>대상이 시야의 멀리 떨어져있다면 간략하게 표현. 즉, 다각형의 수를 줄인다. </li></ul></ul><ul><li>방법 </li></ul><ul><ul><li>변 축소(edge collapse) </li></ul></ul><ul><ul><ul><li>모델의 형상에 많은 영향을 주지 않는 변을 축소 </li></ul></ul></ul>v u v
  5. 5. 01. Mesh simplification <ul><li>u, v를 모두 움직이는 경우 </li></ul><ul><ul><li>우수한 모델 얻음 </li></ul></ul><ul><ul><li>복잡한 계산과정 </li></ul></ul><ul><li>한 점, u 또는 v를 움직이는 경우 </li></ul><ul><ul><li>모델의 왜곡이 일어날 가능성 높음 </li></ul></ul><ul><ul><li>간단한 계산과정 </li></ul></ul>
  6. 6. 01. Mesh simplification <ul><li>변 축소 비용 </li></ul><ul><ul><li>꼭지점이 제거되어 변이 축소되었을 때 다각형 모델이 얼마나 변하는지를 측정하는 기준 </li></ul></ul><ul><ul><li>0 에 가까우면 모델 변형이 약함 </li></ul></ul><ul><ul><li>여러가지 방법이 있으나 변의 길이와 변을 공유하는 두 삼각형 사이의 각도를 주요 인자로 고려한다 </li></ul></ul>
  7. 7. 01. Mesh simplification

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