BufferedImage纹理没有出现在java3D中

Question

我对 java3D 和 stackoverflow 都很陌生。我的问题是我尝试将 BufferedImage 纹理添加到矩形，但它没有出现。我将 BufferedImage 保存到一个文件中，因此我确定它不是空的。 “bi”是BufferedImage。看来我能找到的有关 java3D 的任何内容都已经过时了。注释是关于其上方的命令，而不是下方的命令。

    QuadArray alap = new QuadArray(4, QuadArray.COORDINATES | GeometryArray.TEXTURE_COORDINATE_2);

    // [...] setting coordinates for the polygon (rectangle)

    Appearance alapAppearance = new Appearance();
    PolygonAttributes alapPa = new PolygonAttributes();

    alapAppearance.setPolygonAttributes(alapPa);

    alap.setTextureCoordinate (0, 0, new TexCoord2f(0.0f,0.0f));
    alap.setTextureCoordinate (0, 1, new TexCoord2f(1.0f,0.0f));
    alap.setTextureCoordinate (0, 2, new TexCoord2f(1.0f,1.0f));
    alap.setTextureCoordinate (0, 3, new TexCoord2f(0.0f,1.0f));
    //tryed in different order

    TextureAttributes texAttr = new TextureAttributes();
    texAttr.setTextureMode(TextureAttributes.REPLACE);
    TextureLoader loader = new TextureLoader(bi, TextureLoader.ALLOW_NON_POWER_OF_TWO);
    //Tryed with "RGB" flag too (as second parameter).
    Texture t1 = loader.getTexture();

t1.setBoundaryModeS(Texture.CLAMP_TO_EDGE);
t1.setBoundaryModeT(Texture.CLAMP_TO_EDGE);

    alapAppearance.setCapability(Appearance.ALLOW_TEXTURE_WRITE);
    alapAppearance.setCapability(Appearance.ALLOW_TEXTURE_ATTRIBUTES_WRITE);
    //I don't think it's really needed, but can't hurt I quess.
    alapAppearance.setTextureAttributes(texAttr);
    alapAppearance.setTexture(t1);

    tfg.addChild(new Shape3D(alap, alapAppearance));
    //tfg = transformGroup

Answer 1

好的，我找到了解决方案。看来TextureLoader.ALLOW_NON_POWER_OF_TWO使纹理加载器加载没有2倍大小的纹理，但java3d仍然不会在多边形上拉伸它。也可能在某个地方有一个标志，因为加载您无法使用的纹理似乎毫无意义。