如何從Unity3D訪問本機Java位圖？

Question

我想使用在我的Unity項目中的本機Java庫中加載的位圖。

如何將位圖從Java傳遞到C＃？

Answer 1

由於您的問題不是很具體，我只假設您已將圖像加載為BufferedImage 。 因此，這里有個建議：

使用JNA庫可以更好地訪問c＃資源。

然后也許要做類似的事情：

BufferedImage someImage;
long somePointer;

DataBuffer data = someImage.getData().getDataBuffer();
int[] bankOffsets = data.getOffsets();
long offset = 0;
com.sun.jna.Pointer ptr = new com.sun.jna.Pointer(somePointer);
switch(data.getDataType()) {
case DataBuffer.TYPE_BYTE: 
    byte[][] bbanks = ((DataBufferByte) data).getBankData();
    for (int i = 0; i < bbanks.length; i++, offset += bbanks[i].length - bankOffsets[i]) 
        ptr.write(offset, bbanks[i], bankOffsets[i], bbanks[i].length - bankOffsets[i]);
break;
case DataBuffer.TYPE_DOUBLE:
    double[][] dbanks = ((DataBufferDouble) data).getBankData();
    for (int i = 0; i < dbanks.length; i++, offset += (dbanks[i].length - bankOffsets[i])*8) 
        ptr.write(offset, dbanks[i], bankOffsets[i], dbanks[i].length - bankOffsets[i]);
break;
case DataBuffer.TYPE_FLOAT:
    float[][] fbanks = ((DataBufferFloat) data).getBankData();
    for (int i = 0; i < fbanks.length; i++, offset += (fbanks[i].length - bankOffsets[i])*4) 
        ptr.write(offset, fbanks[i], bankOffsets[i], fbanks[i].length - bankOffsets[i]);
break;
case DataBuffer.TYPE_INT:
    int[][] ibanks = ((DataBufferInt) data).getBankData();
    for (int i = 0; i < ibanks.length; i++, offset += (ibanks[i].length - bankOffsets[i])*4) 
        ptr.write(offset, ibanks[i], bankOffsets[i], ibanks[i].length - bankOffsets[i]);
break;
case DataBuffer.TYPE_SHORT:
    short[][] sbanks = ((DataBufferShort) data).getBankData();
    for (int i = 0; i < sbanks.length; i++, offset += (sbanks[i].length - bankOffsets[i])*2) 
        ptr.write(offset, sbanks[i], bankOffsets[i], sbanks[i].length - bankOffsets[i]);
break;
case DataBuffer.TYPE_USHORT:
    short[][] usbanks = ((DataBufferUShort) data).getBankData();
    for (int i = 0; i < usbanks.length; i++, offset += (usbanks[i].length - bankOffsets[i])*2) 
        ptr.write(offset, usbanks[i], bankOffsets[i], usbanks[i].length - bankOffsets[i]);
break;
case DataBuffer.TYPE_UNDEFINED:
    throw new IllegalArgumentException("Unsupported data type");
}

寫入的數據應該是所有像素顏色值。 格式取決於圖像類型（可以使用BufferedImage類中的getType()方法獲得getType() 。

另外，您也可以使用Java本機接口，但我沒有對此進行研究。