Question

在这里使用测地圆顶。它运行正常，但它看起来像垃圾，并没有渲染任何反锯齿。

我认为在处理中默认打开平滑功能。谁能告诉我哪里出错？是因为我正在使用beginShape（）吗？我似乎也无法改变笔画宽度，并且alpha填充不会做任何事情。

int state = 0;
float scale = 100;
float phi = (1 + sqrt(5)) / 2.0;
float radius = sqrt(sq(1) + sq(phi));
ArrayList<Triangle> triangles;

void setup(){
  size(1000, 500, P3D);
  PVector[] vertices = {new PVector(0, 1, phi),
                        new PVector(0, -1, phi),
                        new PVector(0, -1, -phi),
                        new PVector(0, 1, -phi),
                        new PVector(phi, 0, 1),
                        new PVector(-phi, 0, 1),
                        new PVector(-phi, 0, -1),
                        new PVector(phi, 0, -1),
                        new PVector(1, phi, 0),
                        new PVector(-1, phi, 0),
                        new PVector(-1, -phi, 0),
                        new PVector(1, -phi, 0)};
  triangles = new ArrayList<Triangle>(); 
  triangles.add(new Triangle(vertices[0], vertices[8], vertices[9])); 
  triangles.add(new Triangle(vertices[0], vertices[9], vertices[5])); 
  triangles.add(new Triangle(vertices[0], vertices[5], vertices[1])); 
  triangles.add(new Triangle(vertices[0], vertices[1], vertices[4])); 
  triangles.add(new Triangle(vertices[0], vertices[4], vertices[8]));
  triangles.add(new Triangle(vertices[1], vertices[5], vertices[10]));
  triangles.add(new Triangle(vertices[1], vertices[10], vertices[11]));
  triangles.add(new Triangle(vertices[1], vertices[11], vertices[4]));
  triangles.add(new Triangle(vertices[2], vertices[3], vertices[7]));
  triangles.add(new Triangle(vertices[2], vertices[7], vertices[11]));
  triangles.add(new Triangle(vertices[2], vertices[11], vertices[10]));
  triangles.add(new Triangle(vertices[2], vertices[10], vertices[6]));
  triangles.add(new Triangle(vertices[2], vertices[6], vertices[3]));
  triangles.add(new Triangle(vertices[3], vertices[6], vertices[9]));
  triangles.add(new Triangle(vertices[3], vertices[9], vertices[8]));
  triangles.add(new Triangle(vertices[3], vertices[8], vertices[7]));
  triangles.add(new Triangle(vertices[4], vertices[11], vertices[7]));
  triangles.add(new Triangle(vertices[4], vertices[7], vertices[8]));
  triangles.add(new Triangle(vertices[5], vertices[9], vertices[6]));
  triangles.add(new Triangle(vertices[5], vertices[6], vertices[10]));

  for(int i = 0; i < 1; i++){
    ArrayList<Triangle> nextTriangles = new ArrayList<Triangle>();
    for(Triangle t: triangles){
      nextTriangles.addAll(t.divide());
    }
    triangles = nextTriangles;
  }  
}

void draw(){
  //camera(width/2.0, height/2.0, (height/2.0) / tan(PI*30.0 / 180.0), width/2.0, height/2.0, 0, 0, 1, 0)
  background(255);
  translate(width / 2, height / 2);
  rotateX(frameCount * 0.0002);
  rotateY(frameCount * 0.0004);
  rotateZ(frameCount * 0.0006);

  for(Triangle t: triangles){
    t.display();

  }
}

class Triangle{

  PVector[] vertices;

  Triangle(PVector v0, PVector v1, PVector v2){
    vertices = new PVector[3];
    vertices[0] = v0;
    vertices[1] = v1;
    vertices[2] = v2;

  }

  void display(){

        stroke(255, 210,0);
        noFill();
        beginShape();
        for(int i = 0; i < 3; i++){
          vertex(vertices[i].x * scale, vertices[i].y * scale, vertices[i].z * scale);
        }
        endShape(CLOSE);
  }

  ArrayList<Triangle> divide(){
    PVector[] midpoints = new PVector[3];
    for(int i = 0; i < 3; i++){
      int j = i != 2 ? i + 1: 0;
      PVector m = PVector.lerp(vertices[i], vertices[j], 0.5);
      m.normalize();
      m.mult(radius);
      midpoints[i] = m;
    }
    ArrayList<Triangle> triangles = new ArrayList<Triangle>();

    triangles.add(new Triangle(vertices[0], midpoints[0], midpoints[2]));
    triangles.add(new Triangle(vertices[1], midpoints[1], midpoints[0]));
    triangles.add(new Triangle(vertices[2], midpoints[2], midpoints[1]));
    triangles.add(new Triangle(midpoints[0], midpoints[1], midpoints[2]));   
    return triangles;
  }
}

Answer 1

请养成发布MCVE而不是整个项目的习惯。

Here是一个更简单的示例，用于演示此问题：

void setup(){
  size(500, 500, P3D);
}

void draw(){
  background(255);
  line(0, 0, mouseX, mouseY);
}

听起来你正在寻找hint()功能。可以在the reference中找到更多信息，但here只是一个简单示例：

void setup(){
  hint(ENABLE_OPENGL_4X_SMOOTH);
  size(500, 500, P3D);

}

void draw(){
  background(255);
  line(0, 0, mouseX, mouseY);
}

如果您仍然遇到问题，请在新的问题帖子中发布更新的MCVE。祝你好运。

Processing.js：P3D没有抗锯齿？

1 个答案: