本文整理匯總了Java中android.graphics.RectF.setEmpty方法的典型用法代碼示例。如果您正苦於以下問題：Java RectF.setEmpty方法的具體用法？Java RectF.setEmpty怎麽用？Java RectF.setEmpty使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類android.graphics.RectF的用法示例。
在下文中一共展示了RectF.setEmpty方法的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。
示例1: updateDrawableBounds
import android.graphics.RectF; //導入方法依賴的package包/類
private void updateDrawableBounds(DrawableInfo drawableInfo) {
final Drawable drawable = drawableInfo.mDrawable;
final float radius = mSteinerCircleRadius;
if (radius <= 0) {
drawable.setBounds(0, 0, 0, 0);
return;
}
final int dWidth = drawable.getIntrinsicWidth();
final int dHeight = drawable.getIntrinsicHeight();
final RectF bounds = mTempBounds;
bounds.setEmpty();
if (dWidth <= 0 || dHeight <= 0 || dWidth == dHeight || FitType.FIT == mFitType) {
bounds.inset(-radius, -radius);
} else {
float scale;
if (dWidth > dHeight) {
scale = radius / (float) dHeight;
} else {
scale = radius / (float) dWidth;
}
bounds.inset(-dWidth * scale, -dHeight * scale);
if (FitType.START == mFitType || FitType.END == mFitType) {
int dir = FitType.START == mFitType ? 1 : -1;
bounds.offset((bounds.width() * 0.5f - radius) * dir,
(bounds.height() * 0.5f - radius) * dir);
}
}
bounds.offset(drawableInfo.mCenterX, drawableInfo.mCenterY);
drawable.setBounds((int) bounds.left, (int) bounds.top,
Math.round(bounds.right), Math.round(bounds.bottom));
}
示例2: resetInstance
import android.graphics.RectF; //導入方法依賴的package包/類
@Override
protected RectF resetInstance(RectF obj) {
obj.setEmpty();
return obj;
}
示例3: strokeTo
import android.graphics.RectF; //導入方法依賴的package包/類
public RectF strokeTo(CanvasLite c, float x, float y, float r) {
final RectF dirty = tmpDirtyRectF;
dirty.setEmpty();
if (mLastR < 0) {
// always draw the first point
drawStrokePoint(c,x,y,r,dirty);
} else {
// connect the dots, la-la-la
mLastLen = dist(mLastX, mLastY, x, y);
float xi, yi, ri, frac;
float d = 0;
while (true) {
if (d > mLastLen) {
break;
}
frac = d == 0 ? 0 : (d / mLastLen);
ri = lerp(mLastR, r, frac);
xi = lerp(mLastX, x, frac);
yi = lerp(mLastY, y, frac);
drawStrokePoint(c,xi,yi,ri,dirty);
// for very narrow lines we must step (not much more than) one radius at a time
final float MIN = 1f;
final float THRESH = 16f;
final float SLOPE = 0.1f; // asymptote: the spacing will increase as SLOPE*x
if (ri <= THRESH) {
d += MIN;
} else {
d += Math.sqrt(SLOPE * Math.pow(ri - THRESH, 2) + MIN);
}
}
/*
// for curved paths
Path p = mWorkPath;
p.reset();
p.moveTo(mLastX, mLastY);
p.lineTo(x, y);
PathMeasure pm = mWorkPathMeasure;
pm.setPath(p, false);
mLastLen = pm.getLength();
float d = 0;
float posOut[] = new float[2];
float ri;
while (true) {
if (d > mLastLen) {
d = mLastLen;
}
pm.getPosTan(d, posOut, mTan);
// denormalize
mTan[0] *= mLastLen; mTan[1] *= mLastLen;
ri = lerp(mLastR, r, d / mLastLen);
c.drawCircle(posOut[0], posOut[1], ri, mPaint);
dirty.union(posOut[0] - ri, posOut[1] - ri, posOut[0] + ri, posOut[1] + ri);
if (d == mLastLen) break;
d += Math.min(ri, WALK_STEP_PX); // for very narrow lines we must step one radius at a time
}
*/
}
mLastX = x;
mLastY = y;
mLastR = r;
return dirty;
}