java-Libgdx的computeGlyphAdvancesAndPositions不存在

概述我正在用Libgdx做文字动画.尝试做类似的事情font1=newBitmapFont(Gdx.files.internal("fontLabel/fonty.fnt"),false);font1.getRegion().getTexture().setFilter(Texture.TextureFilter.Linear,Texture.TextureFilter.Linear);touchPos=newVector3();listc

我正在用libgdx做文字动画.尝试做类似的事情

Font1 = new BitmapFont(Gdx.files.internal("FontLabel/Fonty.fnt"), false);Font1.getRegion().getTexture()        .setFilter(Texture.TextureFilter.linear, Texture.TextureFilter.linear);touchPos = new Vector3();Listchar = new Textbutton[pause.length()];advances = new floatArray();post = new floatArray();Font1.computeGlyphAdvancesAndpositions(pause, advances, post);

但是computeGlyphAdvancesAndpositions不再退出,该怎么办？

编辑

我读了blog post,上面说要使用GlyphLayout,但我不知道该怎么做？ GlyphLayout不接受我要提供的参数

我想做类似this video中的动画的 *** 作,旧的源代码是here,但是如上所述,由于我强调了这一节,所以它不再起作用.

package com.tntstudio.texteffect;import com.badlogic.gdx.ApplicationListener;import com.badlogic.gdx.Gdx;import com.badlogic.gdx.graphics.GL10;import com.badlogic.gdx.graphics.Texture.TextureFilter;import com.badlogic.gdx.graphics.g2d.BitmapFont;import com.badlogic.gdx.math.Interpolation;import com.badlogic.gdx.scenes.scene2d.inputEvent;import com.badlogic.gdx.scenes.scene2d.Stage;import com.badlogic.gdx.scenes.scene2d.actions.Actions;import com.badlogic.gdx.scenes.scene2d.ui.Textbutton;import com.badlogic.gdx.scenes.scene2d.ui.Textbutton.TextbuttonStyle;import com.badlogic.gdx.scenes.scene2d.utils.ClickListener;import com.badlogic.gdx.utils.floatArray;public class TECore implements ApplicationListener {    private Stage stage;    private BitmapFont Font;    private Textbutton[] Listchar;    private floatArray post, advances;    private String text;    private static final float time = 0.5f, delay = 0.2f;    private static final float x = 200f, y = 200f;    @OverrIDe    public voID create() {        stage = new Stage(800f, 480f, true);        Font = new BitmapFont(Gdx.files.internal("data/texteffect.fnt"));        Font.getRegion().getTexture()                .setFilter(TextureFilter.linear, TextureFilter.linear);        text = "manh phi libgdx";        Listchar = new Textbutton[text.length()];        advances = new floatArray();        post = new floatArray();        Font.computeGlyphAdvancesAndpositions(text, advances, post);        final TextbuttonStyle style = new TextbuttonStyle();        style.Font = Font;        /*-------- List Text --------*/        for (int i = 0; i < text.length(); i++) {            Listchar[i] = new Textbutton(String.valueOf(text.charat(i)), style);            Listchar[i].settransform(true);            Listchar[i].setposition(x + post.get(i), y);            Listchar[i].setorigin(advances.get(i) / 2,                    Listchar[i].getHeight() / 4);            stage.addActor(Listchar[i]);        }        Gdx.input.setinputProcessor(stage);        /*-------- Drop Effect Adapter --------*/        Textbutton drop = new Textbutton("drop", style);        drop.setposition(0, 10);        drop.addListener(new ClickListener() {            @OverrIDe            public voID clicked(inputEvent event, float x, float y) {                dropText();            }        });        stage.addActor(drop);        /*-------- Spin effect Adapter --------*/        Textbutton spin = new Textbutton("spin", style);        spin.setposition(0, 100f);        spin.addListener(new ClickListener() {            @OverrIDe            public voID clicked(inputEvent event, float x, float y) {                spinText();            }        });        stage.addActor(spin);        /*-------- Appear effect Adapter --------*/        Textbutton appear = new Textbutton("appear", style);        appear.setposition(0, 300f);        appear.addListener(new ClickListener() {            @OverrIDe            public voID clicked(inputEvent event, float x, float y) {                appearText();            }        });        stage.addActor(appear);    }    // ///////////////////////////////////////////////////////////////    // reset Param of a char in text    // ///////////////////////////////////////////////////////////////    private voID resetText() {        for (int i = 0; i < text.length(); i++) {            Listchar[i].setposition(x + post.get(i), y);            Listchar[i].setorigin(advances.get(i) / 2,                    Listchar[i].getHeight() / 4);            Listchar[i].setcolor(0, 0, 0, 1);            Listchar[i].setScale(1f);        }    }    private voID dropText() {        resetText();        for (int i = 0; i < text.length(); i++) {            Listchar[i].setY(y + 200f);            Listchar[i].setcolor(0, 0, 0, 0);            Listchar[i].addAction(Actions.delay(                    delay * i,                    Actions.parallel(Actions.Alpha(1, time), Actions.moveto(x                            + post.get(i), y, time, Interpolation.bounceOut))));        }    }    private voID spinText() {        resetText();        for (int i = 0; i < text.length(); i++) {            Listchar[i].addAction(Actions.delay(delay * i,                    Actions.rotateBy(360f, time * 5, Interpolation.elastic)));        }    }    private voID appearText(){        resetText();        for (int i=0; i<text.length(); i++){            Listchar[i].setScale(0f);            Listchar[i].setcolor(0, 0, 0, 0);            Listchar[i].addAction(Actions.delay(delay*i, Actions.parallel(Actions.Alpha(1, time), Actions.scaleto(1, 1, time, Interpolation.swingOut))));        }    }    @OverrIDe    public voID dispose() {    }    @OverrIDe    public voID render() {        Gdx.gl.glClearcolor(0, 0, 1, 1);        Gdx.gl.glClear(GL10.GL_color_BUFFER_BIT);        stage.act(Gdx.graphics.getDeltaTime());        stage.draw();    }    @OverrIDe    public voID resize(int wIDth, int height) {    }    @OverrIDe    public voID pause() {    }    @OverrIDe    public voID resume() {    }}

解决方法:

从libGDX的version 1.5.6开始,方法BitmapFont.computeGlyphAdvancesAndpositions was removed改为GlyphLayout.

BitmapFont.computeGlyphAdvancesAndpositions返回了2个数组,其中包含给定CharSequence的字符的进阶和位置.

要使用GlyphLayout检索相同的信息,请执行以下 *** 作：

>创建一个GlyphLayout对象并设置所需的字体和文本：

GlyphLayout layout = new GlyphLayout();layout.setText(Font, text);

>提供的文本将基于换行符拆分为“运行”；如果没有换行符,则整个文本将在第一次运行时存储：

GlyphRun run = layout.runs.get(0);

> GlyphRun包含xAdvances,它与BitmapFont.computeGlyphAdvancesAndpositions返回的advances数组相当；区别在于,数组的第一个位置包含相对于绘图位置的X偏移量,而第i个字符的实际前进宽度位于数组的第i个1元素中：

float startingOffset = run.xAdvances.get(0);float ithAdvance = run.xAdvances.get(i + 1);

>不幸的是,文本中单个字符的位置不再可用,但是我们可以通过添加先前字符的高级字符来获得它们：

float[] positions = new float[text.length()];for (int i = 0; i < positions.length; i++) {    if (i == 0) {        // first position is the starting offset        positions[0] = run.xAdvances.get(0);    } else {        // current position is the prevIoUs position plus its advance        positions[i] = positions[i - 1] + run.xAdvances.get(i);      }         }

结论：

> advances.get(i)替换为run.xAdvances.get(i 1)
> post.get(i)替换为positions(i),如先前所示(或以等效方式)获得

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