static void doPoints(JNIEnv* env, jobject jcanvas, jfloatArray jptsArray,
jint offset, jint count, jobject jpaint,
SkCanvas::PointMode mode) {
NPE_CHECK_RETURN_VOID(env, jcanvas);
NPE_CHECK_RETURN_VOID(env, jptsArray);
NPE_CHECK_RETURN_VOID(env, jpaint);
SkCanvas* canvas = GraphicsJNI::getNativeCanvas(env, jcanvas);
const SkPaint& paint = *GraphicsJNI::getNativePaint(env, jpaint);
AutoJavaFloatArray autoPts(env, jptsArray);
float* floats = autoPts.ptr();
const int length = autoPts.length();
if ((offset | count) < 0 || offset + count > length) {
doThrowAIOOBE(env);
return;
}
// now convert the floats into SkPoints
count >>= 1; // now it is the number of points
SkAutoSTMalloc<32, SkPoint> storage(count);
SkPoint* pts = storage.get();
const float* src = floats + offset;
for (int i = 0; i < count; i++) {
pts[i].set(SkFloatToScalar(src[0]), SkFloatToScalar(src[1]));
src += 2;
}
canvas->drawPoints(mode, count, pts, paint);
}
static void drawLines(JNIEnv* env, jobject, jlong canvasHandle, jfloatArray jptsArray,
jint offset, jint count, jlong paintHandle) {
NPE_CHECK_RETURN_VOID(env, jptsArray);
AutoJavaFloatArray autoPts(env, jptsArray);
float* floats = autoPts.ptr();
const int length = autoPts.length();
if ((offset | count) < 0 || offset + count > length) {
doThrowAIOOBE(env);
return;
}
const Paint* paint = reinterpret_cast<Paint*>(paintHandle);
get_canvas(canvasHandle)->drawLines(floats + offset, count, *paint);
}
