public void update() {
if (!isPlaying || !updateVertices) return;
currentTime = System.currentTimeMillis();
KeyFrame currentFrame = frames[currentFrameIndex];
KeyFrame nextFrame = frames[(currentFrameIndex + 1) % numFrames];
if (currentFrameName != null && !currentFrameName.equals(currentFrame.getName())) {
if (!loop) stop();
else currentFrameIndex = loopStartIndex;
return;
}
float[] currentVerts = currentFrame.getVertices();
float[] nextVerts = nextFrame.getVertices();
float[] currentNormals = currentFrame.getNormals();
float[] nextNormals = nextFrame.getNormals();
int numVerts = currentVerts.length;
float[] interPolatedVerts = new float[numVerts];
float[] interPolatedNormals = new float[numVerts];
for (int i = 0; i < numVerts; i += 3) {
interPolatedVerts[i] = currentVerts[i] + interpolation * (nextVerts[i] - currentVerts[i]);
interPolatedVerts[i + 1] =
currentVerts[i + 1] + interpolation * (nextVerts[i + 1] - currentVerts[i + 1]);
interPolatedVerts[i + 2] =
currentVerts[i + 2] + interpolation * (nextVerts[i + 2] - currentVerts[i + 2]);
interPolatedNormals[i] =
currentNormals[i] + interpolation * (nextNormals[i] - currentNormals[i]);
interPolatedNormals[i + 1] =
currentNormals[i + 1] + interpolation * (nextNormals[i + 1] - currentNormals[i + 1]);
interPolatedNormals[i + 2] =
currentNormals[i + 2] + interpolation * (nextNormals[i + 2] - currentNormals[i + 2]);
}
interpolation += fps * (currentTime - startTime) / 1000;
vertices().overwriteNormals(interPolatedNormals);
vertices().overwriteVerts(interPolatedVerts);
if (interpolation > 1) {
interpolation = 0;
currentFrameIndex++;
if (currentFrameIndex >= numFrames) currentFrameIndex = 0;
}
startTime = System.currentTimeMillis();
}
