android - LibGDX ShapeRenderer 圆形绘图

Question

我已经尝试了几种将圆圈绘制到生成坐标的解决方案。它不起作用，但我不知道 filledCircle 方法有什么问题？我该如何更换它？

留言:

FilledCircle cannot be resolved or is not a field

代码:

package com.example.game;

import com.badlogic.gdx.ApplicationAdapter;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Sprite;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer.ShapeType;

public class MainClass extends ApplicationAdapter {
SpriteBatch batch;
OrthographicCamera camera;
ShapeRenderer shapeRenderer;
private Sprite sprite;     

@Override
public void create () {
    shapeRenderer = new ShapeRenderer();
    batch = new SpriteBatch();
}

@Override
public void render () {

     Gdx.gl.glClearColor(1, 1, 1, 1);
     Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

     Gdx.gl.glEnable(GL20.GL_BLEND);
     Gdx.gl.glBlendFunc(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA);
     Gdx.gl.glDisable(GL20.GL_BLEND);

      batch.setProjectionMatrix(camera.combined);

      batch.begin();
      batch.draw(sprite, 200, 200, 64, 64);
      shapeRenderer.begin(ShapeType.FilledCircle);
      shapeRenderer.filledCircle(50, 50, 32);
      shapeRenderer.setColor(Color.BLACK);
      shapeRenderer.end();
      batch.end();  
}


}

Answer 1

begin(ShapeRenderer.ShapeType type) 方法接受一个 ShapeType。有 3 Shapetypes :填充，线和点。没有像您正在使用的 FilledCircle(这就是错误消息告诉您的内容)。

因此，您应该使用 shapeRenderer.begin(ShapeType.Filled);

另外，没有filledCircle() 方法。试试 shapeRenderer.circle(50, 50, 32);。

编辑:

这是您的代码，没有一些错误。您需要理解它并完成一些部分，复制粘贴是行不通的。

@Override
public void create () {
    shapeRenderer = new ShapeRenderer();
    batch = new SpriteBatch();

    camera = new OrthographicCamera(300, 480); //FILL THE VALUES HERE
    sprite = new Sprite(new Texture(Gdx.files.internal("badlogic.jpg")));  //FILL THE VALUES HERE

     sprite.setBounds(200, 200, 64, 64);
}


@Override
public void render () {

     Gdx.gl.glClearColor(1, 1, 1, 1);
     Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

     Gdx.gl.glEnable(GL20.GL_BLEND);
     Gdx.gl.glBlendFunc(GL20.GL_SRC_ALPHA, GL20.GL_ONE_MINUS_SRC_ALPHA);
     Gdx.gl.glDisable(GL20.GL_BLEND);

      batch.setProjectionMatrix(camera.combined);

      batch.begin();  
      sprite.draw(batch);  
      batch.end();

      shapeRenderer.setColor(Color.BLACK);
      shapeRenderer.begin(ShapeType.Filled);
      shapeRenderer.circle(50, 50, 32);
      shapeRenderer.end();
}