由於性能我搬到了OpenGL的2D從canvas.drawBitmap
什麼是在OpenGL Android中爲精靈圖表中的對象添加動畫的技術?
這是精靈表4X1:
現在,使其工作,我曾跟隨類:
public Vulcan(ScreenObjectsView objectsView, int vulkanSpriteID, Context context) {
this.b = BitmapFactory.decodeResource(context.getResources(), vulkanSpriteID);
// 1x4
height = b.getHeight();
width = b.getWidth()/4;
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
x = display.getWidth()/2-width/2; // deprecated
y = display.getHeight()-height; // deprecated
}
public void update() {
frameFreq++;
if(frameFreq > 0){
currentFrame = ++currentFrame % 4;
frameFreq = 0;
}
}
@Override
public void draw(Canvas canvas) {
update();
int srcX = currentFrame * width;
Rect src = new Rect(srcX, 0, srcX+width, height);
Rect dst = new Rect(x, y, x+width, y+height);
canvas.drawBitmap(b, src, dst, null);
}
每個週期的時間我採取Rect
和從左到右(在循環中):
currentFrame = ++currentFrame % 4;
到目前爲止好。
我如何在OpenGL中爲上面提到的sprite表單添加動畫?
今天,我知道如何繪製和在OpenGL移動對象(感謝good demo)
,但不知道跟精靈玩。
任何想法,鏈接,代碼片段?
[編輯]
THER是無腦膜使用精靈表或4張相似圖片:
,
等。
奇怪的是,仍然沒有得到任何答案或方向。
謝謝
[編輯2]
根據什麼AERT說我實現了下面的代碼和它的作品。
但似乎凌亂
太多的代碼對OpenGL。對於每個紋理(我有4),我需要創建FloatBuffer:
也許有人有更短的路,或者我做錯了什麼。
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.FloatBuffer;
import javax.microedition.khronos.opengles.GL10;
public class DevQuestSpriteBase {
private static final String LOG_TAG = "Fess";//DevQuestSpriteBase.class.getSimpleName();
protected int mFrame = 0;
protected int mSwitcher = 0;
private int textureCount = 1; // frame animation
protected int[] textures = new int[textureCount]; // frame animation
// texture and verts
protected FloatBuffer vertexBuffer,
textureBuffer1,
textureBuffer2,
textureBuffer3,
textureBuffer4;
ByteBuffer bb1;
protected float vertices[] = {
0f,0f,0.0f,
1f,0f,0.0f,
0f,1f,0.0f,
1f,1f,0.0f
};
/** 1 frame */
protected float texture1[] = {
0.0f, 1.0f,
0.0f, 0.0f,
0.25f, 1.0f,
0.25f, 0.0f
};
/** 2 frame */
protected float texture2[] = {
0.25f, 1.0f,
0.25f, 0.0f,
0.5f, 1.0f,
0.5f, 0.0f
};
/** 3 frame */
protected float texture3[] = {
0.5f, 1.0f,
0.5f, 0.0f,
0.75f, 1.0f,
0.75f, 0.0f
};
/** 4 frame */
protected float texture4[] = {
0.75f, 1.0f,
0.75f, 0.0f,
1.0f, 1.0f,
1.0f, 0.0f
};
public DevQuestSpriteBase(){
// vertices buffer
bb1 = ByteBuffer.allocateDirect(vertices.length * 4);
bb1.order(ByteOrder.nativeOrder());
vertexBuffer = bb1.asFloatBuffer();
vertexBuffer.put(vertices);
vertexBuffer.position(0);
// texture buffer
bb1 = ByteBuffer.allocateDirect(texture1.length * 4);
bb1.order(ByteOrder.nativeOrder());
textureBuffer1 = bb1.asFloatBuffer();
textureBuffer1.put(texture1);
textureBuffer1.position(0);
//#########################################################
// texture buffer
bb1 = ByteBuffer.allocateDirect(texture2.length * 4);
bb1.order(ByteOrder.nativeOrder());
textureBuffer2 = bb1.asFloatBuffer();
textureBuffer2.put(texture2);
textureBuffer2.position(0);
//#########################################################
// texture buffer
bb1 = ByteBuffer.allocateDirect(texture3.length * 4);
bb1.order(ByteOrder.nativeOrder());
textureBuffer3 = bb1.asFloatBuffer();
textureBuffer3.put(texture3);
textureBuffer3.position(0);
//#########################################################
// texture buffer
bb1 = ByteBuffer.allocateDirect(texture4.length * 4);
bb1.order(ByteOrder.nativeOrder());
textureBuffer4 = bb1.asFloatBuffer();
textureBuffer4.put(texture4);
textureBuffer4.position(0);
}
private void update() {
if(mSwitcher == 5){
mFrame = ++mFrame % 4;
mSwitcher = 0;
// Log.e(LOG_TAG, "DevQuestSpriteBase :: " + mFrame);
}
else{
mSwitcher++;
}
}
public void draw(GL10 gl){
gl.glBindTexture(GL10.GL_TEXTURE_2D, textures[0]);
gl.glBindTexture(GL10.GL_TEXTURE_2D, textures[0]);
if(mFrame == 0){
gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureBuffer1);
}
else if(mFrame == 1){
gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureBuffer2);
}
else if(mFrame == 2){
gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureBuffer3);
}
else if(mFrame == 3){
gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureBuffer4);
}
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, 4);
//Log.e(LOG_TAG, "DevQuestSpriteBase :: draw");
update();
gl.glEnableClientState(GL10.GL_VERTEX_ARRAY);
gl.glEnableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
gl.glVertexPointer(3, GL10.GL_FLOAT, 0, vertexBuffer);
//gl.glTexCoordPointer(2, GL10.GL_FLOAT, 0, textureBuffer1);
gl.glDrawArrays(GL10.GL_TRIANGLE_STRIP, 0, vertices.length/3);
gl.glDisableClientState(GL10.GL_VERTEX_ARRAY);
gl.glDisableClientState(GL10.GL_TEXTURE_COORD_ARRAY);
}
public int[] getTextures() {
return textures;
}
}
「*這是我的精靈表4x1:*」是不是* Doom的*精靈表? –
是的,我把它從毀滅並且加了火,「我的」意味着在我的應用程序。良好的捕捉,:),我不是GUI設計師,並且對於演示/開發它已經足夠了, –
一旦你加載你的紋理(4張圖片在同一個文件中),你可以在繪製之前「裁剪」你的紋理。 – VinceFR