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using System;
using System.Collections.Generic;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Audio;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using Microsoft.Xna.Framework.Storage;
using Microsoft.Xna.Framework.Content;
//텍스쳐를 붙인 프리미티브 3D
namespace TextureEx {
public class Game1 : Game {
//시스템
private GraphicsDeviceManager graphics;
private ContentManager content;
//3D프리미티브
private Matrix worldViewProj; //월드x뷰x사영행렬
private Effect effect; //이펙트
private VertexDeclaration cubeVertexDec; //정점정의
private VertexPositionTexture[] cubeVertices; //정점들
private VertexBuffer vertexBuffer; //정점버퍼
private short[] cubeIndices; //인덱스리스트
private IndexBuffer indexBuffer; //인덱스버퍼
private Texture cubeTexture; //입방체텍스쳐
//constructor
public Game1() {
graphics =new GraphicsDeviceManager(this);
content =new ContentManager(Services);
}
//좌표변환 초기화
private void InitializeTransform() {
//월드 변환행렬
Matrix world =
Matrix.CreateRotationX((float)Math.PI / 6.0f) *
//X축 30도회전
Matrix.CreateRotationY((float)Math.PI / 6.0f);
//Y축 30도회전
//뷰 매트릭스
Matrix view = Matrix.CreateLookAt(
new Vector3(0, 0, 5), //시점
Vector3.Zero, //참조점
Vector3.Up); //UP레벨
//사영변환행렬
Matrix projection = Matrix.CreatePerspectiveFieldOfView(
(float)Math.PI / 4.0f, //시야각(라디안 단위)
(float)graphics.GraphicsDevice.Viewport.Width /
(float)graphics.GraphicsDevice.Viewport.Height, //종횡도
1.0f, //니어 클립면의 거리
100.0f); //파 클립면의 거리
//월드x뷰x사영행렬
worldViewProj = world * view * projection;
}
//이펙트 읽어오기
private void InitializeEffect() {
cubeTexture = content.Load<Texture2D>("heniheni"); //텍스쳐
effect = content.Load<Effect>("TextureEffect"); //이펙트파일
effect.Parameters["worldViewProj"].SetValue(worldViewProj); //이어주기
effect.Parameters["cubeTexture"].SetValue(cubeTexture);
effect.CurrentTechnique = effect.Techniques["TextureTech"];
}
//입방체 초기화
private void InitializeCube() {
//입방체 정점정의
cubeVertexDec = new VertexDeclaration(
graphics.GraphicsDevice, //그래픽스디바이스
VertexPositionTexture.VertexElements); //요소배열
//정점
Vector3 topLeftFront = new Vector3(-1.0f, 1.0f, 1.0f);
Vector3 bottomLeftFront = new Vector3(-1.0f, -1.0f, 1.0f);
Vector3 topRightFront = new Vector3( 1.0f, 1.0f, 1.0f);
Vector3 bottomRightFront = new Vector3( 1.0f, -1.0f, 1.0f);
Vector3 topLeftBack = new Vector3(-1.0f, 1.0f, -1.0f);
Vector3 topRightBack = new Vector3( 1.0f, 1.0f, -1.0f);
Vector3 bottomLeftBack = new Vector3(-1.0f, -1.0f, -1.0f);
Vector3 bottomRightBack = new Vector3( 1.0f, -1.0f, -1.0f);
//텍스쳐 정점
Vector2 textureTopLeft = new Vector2(0.0f, 0.0f);
Vector2 textureTopRight = new Vector2(1.0f, 0.0f);
Vector2 textureBottomLeft = new Vector2(0.0f, 1.0f);
Vector2 textureBottomRight = new Vector2(1.0f, 1.0f);
//입방체 정점
cubeVertices = new VertexPositionTexture[36];
//앞
cubeVertices[0] = new VertexPositionTexture(topLeftFront, textureTopLeft);
cubeVertices[1] = new VertexPositionTexture(bottomLeftFront, textureBottomLeft);
cubeVertices[2] = new VertexPositionTexture(topRightFront, textureTopRight);
cubeVertices[3] = new VertexPositionTexture(bottomRightFront,textureBottomRight);
//뒤
cubeVertices[4] = new VertexPositionTexture(topLeftBack, textureTopRight);
cubeVertices[5] = new VertexPositionTexture(topRightBack, textureTopLeft);
cubeVertices[6] = new VertexPositionTexture(bottomLeftBack, textureBottomRight);
cubeVertices[7] = new VertexPositionTexture(bottomRightBack,textureBottomLeft);
//위
cubeVertices[8] = new VertexPositionTexture(topLeftFront, textureBottomLeft);
cubeVertices[9] = new VertexPositionTexture(topRightBack, textureTopRight);
cubeVertices[10] = new VertexPositionTexture(topLeftBack, textureTopLeft);
cubeVertices[11] = new VertexPositionTexture(topRightFront,textureBottomRight);
//아래
cubeVertices[12] = new VertexPositionTexture(bottomLeftFront, textureTopLeft);
cubeVertices[13] = new VertexPositionTexture(bottomLeftBack, textureBottomLeft);
cubeVertices[14] = new VertexPositionTexture(bottomRightBack, textureBottomRight);
cubeVertices[15] = new VertexPositionTexture(bottomRightFront,textureTopRight);
//왼쪽
cubeVertices[16] = new VertexPositionTexture(topLeftFront, textureTopRight);
cubeVertices[17] = new VertexPositionTexture(bottomLeftFront, textureBottomRight);
cubeVertices[18] = new VertexPositionTexture(topRightFront, textureTopLeft);
cubeVertices[19] = new VertexPositionTexture(bottomRightFront,textureBottomLeft);
//정점버퍼
vertexBuffer = new VertexBuffer(
graphics.GraphicsDevice,
VertexPositionTexture.SizeInBytes * cubeVertices.Length,
ResourceUsage.None,
ResourceManagementMode.Automatic);
vertexBuffer.SetData<VertexPositionTexture>(cubeVertices);
//인덱스리스트
cubeIndices = new short[] {
0, 1, 2, //앞면
1, 3, 2,
4, 5, 6, //뒷면
6, 5, 7,
8, 9, 10, //윗면
8, 11, 9,
12, 13, 14, //아랫면
12, 14, 15,
16, 13, 17, //왼쪽면
10, 13, 16,
18, 19, 14, //오른쪽면
9, 18, 14 };
//인덱스 버퍼
indexBuffer = new IndexBuffer(graphics.GraphicsDevice,
sizeof(short) * cubeIndices.Length,
ResourceUsage.None,
ResourceManagementMode.Automatic,
IndexElementSize.SixteenBits);
indexBuffer.SetData<short>(cubeIndices);
}
//그래픽스 로드
protected override void LoadGraphicsContent(bool loadAllContent) {
InitializeTransform();
if (loadAllContent) {
InitializeEffect();
InitializeCube();
}
}
//그래픽스 언로드
protected override void UnloadGraphicsContent(bool unloadAllContent) {
if (unloadAllContent == true) {
content.Unload();
}
}
//그리기
protected override void Draw(GameTime gameTime) {
//화면 클리어
graphics.GraphicsDevice.Clear(Color.CornflowerBlue);
//cull모드 설정
graphics.GraphicsDevice.RenderState.CullMode =
CullMode.CullClockwiseFace;
//정점 정의
graphics.GraphicsDevice.VertexDeclaration = cubeVertexDec;
//정점 버퍼
graphics.GraphicsDevice.Vertices[0].SetSource(
vertexBuffer,
0,
VertexPositionTexture.SizeInBytes);
//인덱스 버퍼 지정
graphics.GraphicsDevice.Indices = indexBuffer;
//입방체 그리기
effect.Begin();
foreach (EffectPass pass in effect.CurrentTechnique.Passes) {
pass.Begin();
graphics.GraphicsDevice.DrawIndexedPrimitives(PrimitiveType.TriangleList,
0,
0,
cubeVertices.Length,
0,
12);
pass.End();
}
effect.End();
//베이스 그리기
base.Draw(gameTime);
}
}
} |
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