java - 不知道为什么这个简短的处理任务不起作用

Question

这是一项家庭作业。作业 19 5/16 是作业 http://sites.stuycs.org/home/courses/ml2x/dyrland-weaver/work

我在程序处理中运行它，不需要 main 方法。

Blob 已交给我们。我们必须自己制作 BlobRunner。任何关于为什么我的代码没有做它应该做的事情的建议将不胜感激。第一个文件 BlobRunner

int popSize = 4;
int wobble = 2;
int numSides = 4;
float rad = 100;
int radInt = (int) rad;
float a = sqrt(popSize);
int rootPop = (int) a;
Blob[][] blobs = new Blob[popSize/rootPop][rootPop];
/*=====================================
  The trickiest part of setup is to make 
  the screen an appropriate size for the
  grid of blobs. The grid should be just
  big enough to contain all of the blobs.
  ====================================*/
void setup() {
    size ((popSize/rootPop)*(2*(radInt+3)), rootPop*(2*(radInt+3)));
    populate();
}

/*=====================================
  The main purpose of draw is to go through 
  the array of blobs and display each.
  ====================================*/
void draw() {
    int createdSoFar = 0;
    for (int i = 0; i<rootPop; i++){
    for (int j = 0; j<popSize/rootPop; j++){
        if (createdSoFar < popSize){
        blobs[j][i].display();
        }
        createdSoFar++;
    }
    }
}

/*=====================================
  Populate the array of blobs.
  You can use any values for radius, number of sides
  and wobble factor that you'd like, but you must
  use x and y coordinates that ensure the blobs
  are drawn in a grid without overlaping each other.

  Your code should work for any reasonable value
  of population (i.e. something that would fit on a
  normal monitor).
  ====================================*/
void populate() {
    for (int i = 0; i < rootPop; i++){
    float y = 1;
    for (int j = 0; j < (popSize/rootPop); j++){
        float x = 1;
        blobs[j][i] = new Blob (x*(rad+3), y*(rad+3), numSides, radInt, wobble, wobble); 
        x=x+2;}
    y=y+2;}
}

第二个文件 block

/*=====================================
  A Blob object is a regular polygon variant that
  can have various features.
  Instance Variables:
  numSides: number of sides
  rad: distance from the center of the polygon
  to any vertext
  x: x coordinate of the center
  y: y coordinate of the center
  xFactor: "wobble" foctor in the x direction
  yFactor: "wobble" factor in the y direction
  ====================================*/

class Blob {

    int numSides;
    int rad;
    float x;
    float y;
    int xFactor;
    int yFactor;

    Blob(float cx, float cy, int sides, int r, int xf, int yf ) {

    x = cx;
    y = cy;
    numSides = sides;
    rad = r;
    xFactor = xf;
    yFactor = yf;
    }

    void display() {

    float nx;
    float ny;
    int rx, ry;

    float sy;

    strokeWeight(1);
    beginShape();
    for( float t = 0; t <= 1; t+=( 1.0/numSides ) ) {

        /*
          "wobble" effect is created by adding a random number to each
          x and y coordinate. The larger the x and y factors, the higher
          the possible wobble value could be
        */
        rx = (int)random(xFactor);
        ry = (int)random(yFactor);

        nx = rad * cos( 2 * PI * t ) + x + rx;
        ny = rad * sin( 2 * PI * t ) + y + ry;

        vertex(nx, ny);
    }      
    endShape();
    }
}

Answer 1

您的代码运行，因此它正在执行您要求它执行的操作，仅此而已。

我让我的猫检查一下，她说:“这家伙在循环的每次传递中都重新初始化了他的变量，这样他永远不会得到 Blob 网格。告诉他从将 populate() 中的 float y = 1; float x = 1; 移动到两个 for 循环的边界之外，并从那里开始调试”。

然后她翻身侧身，我拍了拍她。