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要在循环中用作Pshape的进程字符串名称

processing

NetTemple · 技术社区 · 6 年前

我试图拉一个sting变量并将其放置在形状函数中,以便显示正确的状态。我有一个单一的(硬编码)版本,但我正试图通过添加循环来提高代码的效率和动态性。

请参见以下代码:

PShape usa;

PShape Alabama;
PShape Alaska;
PShape Arizona;
PShape Arkansas;

void setup() {
  size(1000, 1000);  
  usa = loadShape("map.svg");

  Alabama= usa.getChild("AL");
  Alaska= usa.getChild("AK");
  Arizona= usa.getChild("AZ");
  Arkansas= usa.getChild("AR");
}

void draw() {
  background(255);
  Table table = loadTable("data.csv", "header");
  for (int i = 0; i < table.getRowCount(); i++) {

    // Gets the 1st (then 2nd, then 3rd...) TABLE ROW
    TableRow row = table.getRow(i);

    //  Gets the data values and places in variables
    String state = row.getString("state");
    String state_abv = row.getString("state_abv");
    float percentage = row.getFloat("percentage");


    // Draw the full map
    shape(usa, 0, 0);

    //*****************************
    // THIS IS THE DYNAMIC ATTEMPT
    state.disableStyle();
    fill(0);
    shape(state, 0, 0);
    text(state_abv, 100 100);
    text(percentage, 100 150);


    // THIS WORKS BUT IS A SINGLE STATE AND HARD CODE...
    // NewJersey.disableStyle();
    // fill(R, 255, 255);
    // shape(NewJersey, 0, 0);

    // DATA FILE IS LIKE SO:
    // state, state_abv,percentage
    /*
     Alabama,AL,21.5
     Alaska,AK,19
     Arizona,AZ,14.7
     Arkansas,AR,23.6
     */
  }
}

2 回复 | 直到 6 年前

Kevin Workman 6 年前

如果我理解你的问题,听起来你在寻找 HashMap 班类似于数组映射索引的方式(0、1、2、3…)到某个值 哈希图 映射任何对象(包括 String 喜欢 "PA" , "VA" , "CA" ...) 到某个值。下面是一个基本示例:

HashMap<String, String> map = new HashMap<String, String>();
map.put("PA", "Harrisburg");
map.put("VA", "Richmond");
map.put("CA", "Sacramento");
String city = map.get("VA");
println(city);

此示例映射 一串 关键点 一串 值,但可以将任何对象用作键或值。有关更多信息,请访问 the reference .

如果您仍然无法弄清楚,请发布 MCVE 在一个新问题中,我们将从那里开始。祝你好运

Cindy Meister Prabhuprasad NG 6 年前

这是一个可行的解决方案,尽管填充颜色问题仍未解决。。。(这是一个单独的问题)。但这确实会将外部数据文件中的所有数据放入一个功能数组“states[]”

PShape usa;
PShape[] states;       // array to hold all states
int numstates;         //count number of states

void setup() {
  size(1000, 1000);

  //load the map
  usa = loadShape("map.svg");
  parseMap();          
  smooth();
  noLoop();
}

void draw() {
  background(200);
  drawMap();
}

// ***** ------------------------
// ***** ----- PARSE MAP
// ***** ------------------------
void parseMap() {
  numstates = usa.getChildCount(); //count number of child shapes on map
  states = new PShape[numstates];
  //println("NUMSTATES " + numstates);

  // stateCodes = new String[numstates];
  usa.disableStyle(); //turn off styles for whole map

  //make state objects
  for (int i = 0; i < numstates; i++) {
    states[i] = usa.getChild(i);
    println("NUMSTATES " + states[i]);
  }
}


// ***** ------------------------
// ***** ----- DRAW MAP
// ***** ------------------------
void drawMap() {
  for (int n = 0; n < numstates; n++) {

    Table table = loadTable("data.csv", "header");
    for (int i = 0; i < table.getRowCount(); i++) {

      // Gets the 1st (then 2nd, then 3rd...) TABLE ROW
      TableRow row = table.getRow(i);

      //  Gets the data values and places in variables
      String s = row.getString("state");
      String a = row.getString("abv");
      float p = row.getFloat("percent");
      int colora = row.getInt("colora");
      int colorb = row.getInt("colorb");
      int colorc = row.getInt("colorc");
      int loca = row.getInt("loca");
      int locb = row.getInt("locb");

      states[n].disableStyle();
      // fill(colora,colorb,colorc);          // PROBLEM HERE: It fills ALL states same color
      states[n].fill(colora,colorb,colorc);   // I AM TRYING TO FILL EACH STATE A DIFFERNET COLOR
      stroke(255,0,0);
      strokeWeight(2);
      shape(states[n],0,0);
      fill(255);
      text(p, loca, locb);
    }
    println("NUMSTATES " + numstates);
  }
}