private Path createFishPath(float fishCenterX, float fishCenterY) {
Path path = new Path();
float fishHeadX = fishCenterX;
float fishHeadY = fishCenterY - mFishHeight / 2.0f;
// the head of the fish
path.moveTo(fishHeadX, fishHeadY);
// the left body of the fish
path.quadTo(
fishHeadX - mFishWidth * 0.333f,
fishHeadY + mFishHeight * 0.222f,
fishHeadX - mFishWidth * 0.333f,
fishHeadY + mFishHeight * 0.444f);
path.lineTo(fishHeadX - mFishWidth * 0.333f, fishHeadY + mFishHeight * 0.666f);
path.lineTo(fishHeadX - mFishWidth * 0.5f, fishHeadY + mFishHeight * 0.8f);
path.lineTo(fishHeadX - mFishWidth * 0.5f, fishHeadY + mFishHeight);
// the tail of the fish
path.lineTo(fishHeadX, fishHeadY + mFishHeight * 0.9f);
// the right body of the fish
path.lineTo(fishHeadX + mFishWidth * 0.5f, fishHeadY + mFishHeight);
path.lineTo(fishHeadX + mFishWidth * 0.5f, fishHeadY + mFishHeight * 0.8f);
path.lineTo(fishHeadX + mFishWidth * 0.333f, fishHeadY + mFishHeight * 0.666f);
path.lineTo(fishHeadX + mFishWidth * 0.333f, fishHeadY + mFishHeight * 0.444f);
path.quadTo(
fishHeadX + mFishWidth * 0.333f, fishHeadY + mFishHeight * 0.222f, fishHeadX, fishHeadY);
path.close();
return path;
}
private void drawSpring(Canvas canvas, int springDelta) {
mPath.reset();
mPath.moveTo(0, 0);
mPath.lineTo(0, PULL_HEIGHT);
mPath.quadTo(mWidth / 2, PULL_HEIGHT - springDelta, mWidth, PULL_HEIGHT);
mPath.lineTo(mWidth, 0);
canvas.drawPath(mPath, mBackPaint);
int curH = PULL_HEIGHT - springDelta / 2;
if (curH > PULL_HEIGHT - PULL_DELTA / 2) {
int leftX = (int) (mWidth / 2 - 2 * mRadius + getSprRatio() * mRadius);
mPath.reset();
mPath.moveTo(leftX, curH);
mPath.quadTo(mWidth / 2, curH - mRadius * getSprRatio() * 2, mWidth - leftX, curH);
canvas.drawPath(mPath, mBallPaint);
} else {
canvas.drawArc(
new RectF(mWidth / 2 - mRadius, curH - mRadius, mWidth / 2 + mRadius, curH + mRadius),
180,
180,
true,
mBallPaint);
}
}
@Override
public boolean onTouch(View v, MotionEvent event) {
float x = event.getX();
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
path.reset();
path.moveTo(x, y);
x1 = x;
y1 = y;
break;
case MotionEvent.ACTION_MOVE:
path.quadTo(x1, y1, x, y);
x1 = x;
y1 = y;
canvas.drawPath(path, paint);
path.reset();
path.moveTo(x, y);
break;
case MotionEvent.ACTION_UP:
if (x == x1 && y == y1) y1 = y1 + 1;
path.quadTo(x1, y1, x, y);
canvas.drawPath(path, paint);
path.reset();
break;
}
ImageView iv = (ImageView) this.findViewById(R.id.imageView1);
iv.setImageBitmap(bitmap);
return true;
}
public void onTouchMove(Point point) {
float dx = Math.abs(point.x - mX);
float dy = Math.abs(point.y - mY);
if (dx > 0 || dy > 0) {
path.quadTo(mX, mY, (point.x + mX) / 2, (point.y + mY) / 2);
mX = point.x;
mY = point.y;
} else if (dx == 0 || dy == 0) {
path.quadTo(mX, mY, (point.x + 1 + mX) / 2, (point.y + 1 + mY) / 2);
mX = point.x + 1;
mY = point.y + 1;
}
}
private void drawTail(Canvas canvas, int centerY, int bottom, float fraction) {
int bezier1w = (int) (mWidth / 2 + (mRadius * 3 / 4) * (1 - fraction));
PointF start = new PointF(mWidth / 2 + mRadius, centerY);
PointF bezier1 = new PointF(bezier1w, bottom);
PointF bezier2 = new PointF(bezier1w + mRadius / 2, bottom);
mPath.reset();
mPath.moveTo(start.x, start.y);
mPath.quadTo(bezier1.x, bezier1.y, bezier2.x, bezier2.y);
mPath.lineTo(mWidth - bezier2.x, bezier2.y);
mPath.quadTo(mWidth - bezier1.x, bezier1.y, mWidth - start.x, start.y);
canvas.drawPath(mPath, mBallPaint);
}
@Override
public void onDraw(Canvas canvas) {
super.onDraw(canvas);
path.moveTo(a.x, a.y);
path.lineTo(b.x, b.y);
path.quadTo(anchorB.x, anchorB.y, c.x, c.y);
path.lineTo(d.x, d.y);
path.quadTo(anchorA.x, anchorA.y, a.x, a.y);
path.close();
canvas.drawPath(path, paint);
}
/**
* 通过绘制Path构建一个ShapeDrawable，用来绘制到画布Canvas上
*
* @return
*/
private ShapeDrawable drawGooView() {
Path path = new Path();
// 1. 根据当前两圆圆心的距离计算出固定圆的半径
float distance = (float) GeometryUtil.getDistanceBetween2Points(mDragCenter, mStickCenter);
stickCircleTempRadius = getCurrentRadius(distance);
// 2. 计算出经过两圆圆心连线的垂线的dragLineK（对边比临边）。求出四个交点坐标
float xDiff = mStickCenter.x - mDragCenter.x;
Double dragLineK = null;
if (xDiff != 0) {
dragLineK = (double) ((mStickCenter.y - mDragCenter.y) / xDiff);
}
// 分别获得经过两圆圆心连线的垂线与圆的交点（两条垂线平行，所以dragLineK相等）。
PointF[] dragPoints =
GeometryUtil.getIntersectionPoints(mDragCenter, dragCircleRadius, dragLineK);
PointF[] stickPoints =
GeometryUtil.getIntersectionPoints(mStickCenter, stickCircleTempRadius, dragLineK);
// 3. 以两圆连线的0.618处作为 贝塞尔曲线 的控制点。（选一个中间点附近的控制点）
PointF pointByPercent = GeometryUtil.getPointByPercent(mDragCenter, mStickCenter, 0.618f);
// 绘制两圆连接
// 此处参见示意图{@link https://github.com/PoplarTang/DragGooView }
path.moveTo((float) stickPoints[0].x, (float) stickPoints[0].y);
path.quadTo(
(float) pointByPercent.x,
(float) pointByPercent.y,
(float) dragPoints[0].x,
(float) dragPoints[0].y);
path.lineTo((float) dragPoints[1].x, (float) dragPoints[1].y);
path.quadTo(
(float) pointByPercent.x,
(float) pointByPercent.y,
(float) stickPoints[1].x,
(float) stickPoints[1].y);
path.close();
// 将四个交点画到屏幕上
// path.addCircle((float)dragPoints[0].x, (float)dragPoints[0].y, 5, Direction.CW);
// path.addCircle((float)dragPoints[1].x, (float)dragPoints[1].y, 5, Direction.CW);
// path.addCircle((float)stickPoints[0].x, (float)stickPoints[0].y, 5, Direction.CW);
// path.addCircle((float)stickPoints[1].x, (float)stickPoints[1].y, 5, Direction.CW);
// 构建ShapeDrawable
ShapeDrawable shapeDrawable = new ShapeDrawable(new PathShape(path, 50f, 50f));
shapeDrawable.getPaint().setColor(Color.RED);
return shapeDrawable;
}
// TODO Extract all this methods to a new utilities class
private Path getRoundedRectPath(int left, int top, int right, int bottom, int rx, int ry) {
int width = right - left;
int height = bottom - top;
Path path = new Path();
path.moveTo(rx, 0);
path.lineTo(width - rx, 0);
path.quadTo(width, 0, width, ry);
path.lineTo(width, height - ry);
path.quadTo(width, height, width - rx, height);
path.lineTo(rx, height);
path.quadTo(0, height, 0, height - ry);
path.lineTo(0, ry);
path.quadTo(0, 0, rx, 0);
return path;
}
private void splat(PointF start, PointF end, PointF mid, float d) {
Path firstPath = new Path();
if (d < 0) {
d = 0;
}
firstPath.moveTo(start.x, start.y);
firstPath.quadTo(mid.x, mid.y, end.x, end.y);
fCurrentOperation.addPath(firstPath, d);
float dst = dist(start.x, start.y, end.x, end.y);
int quarterDrips = fDrips / 4;
int nbDrips = quarterDrips + RANDOM.nextInt(fDrips);
for (int i = 0; i < nbDrips; i++) {
// positioning of splotch varies between ±4dd, tending towards 0
float x4 = dst * getProbability(0.5f);
float y4 = dst * getProbability(0.5f);
// direction of splotch varies between ±0.5
float x5 = getProbability(0.5f);
float y5 = getProbability(0.5f);
float dd = Math.min(d * (RANDOM.nextFloat() + 0.4f), d);
Path subPath = new Path();
subPath.moveTo(start.x + x4, start.y + y4);
subPath.lineTo(start.x + x4 + x5, start.y + y4 + y5);
fCurrentOperation.addPath(subPath, dd);
}
}
@Override
public boolean onTouchEvent(MotionEvent event) {
float x = event.getX();
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
curX = x;
curY = y;
path.moveTo(curX, curY);
isMoving = true;
break;
case MotionEvent.ACTION_MOVE:
path.quadTo(curX, curY, x, y);
curX = x;
curY = y;
isMoving = true;
break;
case MotionEvent.ACTION_UP:
cacheCanvas.drawPath(path, mPaint);
path.reset();
isMoving = false;
break;
default:
break;
}
invalidate();
return true;
}
/** View的事件将会在7/12详解 */
@Override
public boolean onTouchEvent(MotionEvent event) {
/*
* 获取当前事件位置坐标
*/
float x = event.getX();
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN: // 手指接触屏幕重置路径
mPath.reset();
mPath.moveTo(x, y);
preX = x;
preY = y;
break;
case MotionEvent.ACTION_MOVE: // 手指移动时连接路径
float dx = Math.abs(x - preX);
float dy = Math.abs(y - preY);
if (dx >= MIN_MOVE_DIS || dy >= MIN_MOVE_DIS) {
mPath.quadTo(preX, preY, (x + preX) / 2, (y + preY) / 2);
preX = x;
preY = y;
}
break;
}
// 重绘视图
invalidate();
return true;
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
mPath.moveTo(-1 / 4F * vWidth, waveY);
mPath.quadTo(ctrX, ctrY, vWidth + 1 / 4f, waveY);
mPath.lineTo(vWidth + 1 / 4f, vHeight);
mPath.lineTo(-1 / 4F * vWidth, vHeight);
mPath.close();
canvas.drawPath(mPath, mPaint);
if (ctrX >= vWidth + 0.25f * vWidth) {
isInc = false;
} else if (ctrX <= -0.25f * vWidth) {
isInc = true;
}
ctrX = isInc ? ctrX + 20 : ctrX - 20;
if (ctrY <= vHeight) {
ctrY += 2;
waveY += 2;
}
mPath.reset();
invalidate();
}
private void drawBG(Canvas canvas) {
Path path = new Path();
int currentPointY = 0;
switch (mStatus) {
case NONE:
currentPointY = mMaxArcHeight;
break;
case STATUS_SMOOTH_UP:
case STATUS_UP:
currentPointY =
getHeight()
- (int)
((getHeight() - mMaxArcHeight)
* Math.min(
1, (mArcHeight - mMaxArcHeight / 4) * 2.0 / mMaxArcHeight * 1.3));
break;
case STATUS_DOWN:
currentPointY = mMaxArcHeight;
break;
}
path.moveTo(0, currentPointY);
path.quadTo(getWidth() / 2, currentPointY - mArcHeight, getWidth(), currentPointY);
path.lineTo(getWidth(), getHeight());
path.lineTo(0, getHeight());
path.lineTo(0, currentPointY);
canvas.drawPath(path, mPaint);
}
private void touch_move(float x, float y) {
float dx = Math.abs(x - tiX);
float dy = Math.abs(y - tiY);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
tiPath.quadTo(tiX, tiY, (x + tiX) / 2, (y + tiY) / 2);
tiX = x;
tiY = y;
}
}
private void touch2_move(float x, float y) {
float dx = Math.abs(x - mX2);
float dy = Math.abs(y - mY2);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
mPath2.quadTo(mX2, mY2, (x + mX2) / 2, (y + mY2) / 2);
mX2 = x;
mY2 = y;
}
}
private void touchMove(float x, float y) {
float dx = Math.abs(x - mX);
float dy = Math.abs(y - mY);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
mX = x;
mY = y;
}
}
private void drawDrag(Canvas canvas) {
canvas.drawRect(0, 0, mWidth, PULL_HEIGHT, mBackPaint);
mPath.reset();
mPath.moveTo(0, PULL_HEIGHT);
mPath.quadTo(
mWidthOffset * mWidth, PULL_HEIGHT + (mHeight - PULL_HEIGHT) * 2, mWidth, PULL_HEIGHT);
canvas.drawPath(mPath, mBackPaint);
}
private void touch_move(float x, float y) {
float dx = Math.abs(x - mX1);
float dy = Math.abs(y - mY1);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
mPath1.quadTo(mX1, mY1, (x + mX1) / 2, (y + mY1) / 2);
mX1 = x;
mY1 = y;
}
}
private static void touch_move(Path path, int x, int y) {
float dx = Math.abs(x - mX);
float dy = Math.abs(y - mY);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
path.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
mX = x;
mY = y;
}
}
@Override
protected void onDraw(Canvas canvas) {
mFrontPath.reset();
mFrontPath.moveTo(mFrontPointsList.get(0).x, mFrontPointsList.get(0).y);
mBackPath.reset();
mBackPath.moveTo(mBackPointsList.get(0).x, mBackPointsList.get(0).y);
// 画笔已经实现移动到初始位置
int size = mFrontPointsList.size() - 2;
// 在连续绘制时,起始点需要跳过,只需要控制点和结束点
for (int i = 0; i < size; i = i + 2) {
mFrontPath.quadTo(
mFrontPointsList.get(i + 1).x,
mFrontPointsList.get(i + 1).y,
mFrontPointsList.get(i + 2).x,
mFrontPointsList.get(i + 2).y);
mBackPath.quadTo(
mBackPointsList.get(i + 1).x,
mBackPointsList.get(i + 1).y,
mBackPointsList.get(i + 2).x,
mBackPointsList.get(i + 2).y);
}
mFrontPath.lineTo(getWidth(), getHeight());
mFrontPath.lineTo(0, getHeight());
mFrontPath.close();
mBackPath.lineTo(getWidth() + mWaveWidth, getHeight());
mBackPath.lineTo(0, getHeight());
mBackPath.close();
canvas.clipPath(mOutBorderPath, Region.Op.INTERSECT);
// 白色
canvas.drawPath(mOutBorderPath, mWhitePaint);
// 前波浪
canvas.drawPath(mBackPath, mBackPaint);
// 后波浪
canvas.drawPath(mFrontPath, mFrontPaint);
// 外边框
canvas.drawPath(mOutBorderPath, mOutBorderPaint);
}
public void touch_move(float x, float y) {
float dx = Math.abs(x - mX);
float dy = Math.abs(y - mY);
if ((dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) && (outOfBoundry < maxError)) {
mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
mX = x;
mY = y;
invalidate();
}
}
private void touch_move(float x, float y) {
float dx = Math.abs(x - mX);
float dy = Math.abs(y - mY);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
mX = x;
mY = y;
}
mCanvas.drawPath(mPath, mPaint);
}
private void drawOutCir(Canvas canvas) {
mPath.reset();
mPath.moveTo(0, 0);
mPath.lineTo(0, PULL_HEIGHT);
mPath.quadTo(mWidth / 2, PULL_HEIGHT - (1 - getOutRatio()) * PULL_DELTA, mWidth, PULL_HEIGHT);
mPath.lineTo(mWidth, 0);
canvas.drawPath(mPath, mBackPaint);
int innerY = PULL_HEIGHT - PULL_DELTA / 2 - mRadius * 2;
canvas.drawCircle(mWidth / 2, innerY, mRadius, mBallPaint);
}
private void drawBZLine(
float startX, float startY, float stopX, float stopY, float endX, Canvas canvas) {
if (null == mBzLine) mBzLine = new Path();
getLabelLinePaint().setStyle(Style.STROKE);
// 绘制贝塞尔曲线
mBzLine.reset();
mBzLine.moveTo(startX, startY);
mBzLine.quadTo(stopX, stopY, endX, stopY);
canvas.drawPath(mBzLine, getLabelLinePaint());
}
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawColor(Color.BLACK);
// mPath.lineTo(x, y);
mPath.quadTo(x, y, x, y);
canvas.translate(-transX, 0);
countInfo();
canvas.drawPath(mPath, mPaint);
invalidate();
}
@Override
public void fingerMove(float x, float y, Canvas canvas) {
float dx = Math.abs(x - mX);
float dy = Math.abs(y - mY);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
mX = x;
mY = y;
}
this.draw(canvas);
}
private void Touch_Move(float x, float y) {
float dx = Math.abs(x - mX);
float dy = Math.abs(y - mY);
if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) {
mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
mX = x;
mY = y;
if (IsRecordPath) {
listener.addNodeToPath(x, y, MotionEvent.ACTION_MOVE, IsPaint);
}
}
}
void drawOneStroke(Canvas canvas, int nStroke, float fScale) {
ArrayList pplist = pathDrawing.getPointList();
List<PathLine.point> list = (List) pplist.get(nStroke);
path.reset();
point p = new point(((PathLine.point) list.get(0)).x, ((PathLine.point) list.get(0)).y);
p.x = (p.x - (float) l);
p.y = (p.y - (float) t);
if (p.x < 0x0) {
Log.d("error", "posx exception");
}
if (p.y < 0) {
Log.d("error", "posy exception");
}
p.x = (p.x * fScale);
p.y = (p.y * fScale);
if (sHWRate < 0.1f) {
p.y = 10.0f;
}
p.x = (p.x + (float) nstartx);
p.y = (p.y + (float) nstarty);
path.moveTo(p.x, p.y);
float mX = p.x;
float mY = p.y;
for (int i = 0x1; i < list.size(); i = i + 0x1) {
p.setXY(
(((PathLine.point) list.get(i)).x - (float) l),
(((PathLine.point) list.get(i)).y - (float) t));
p.x = (p.x * fScale);
p.y = (p.y * fScale);
if (sHWRate < 0.1f) {
p.y = 10.0f;
}
if (p.x < 0x0) {
Log.d("error", "pos exception");
}
if (p.y < 0) {
Log.d("error", "posy exception");
}
p.x = (p.x + (float) nstartx);
p.y = (p.y + (float) nstarty);
path.quadTo(mX, mY, ((p.x + mX) / 2.0f), ((p.y + mY) / 2.0f));
mX = p.x;
mY = p.y;
}
try {
canvas.drawPath(path, thinPen);
return;
} catch (Exception e) {
e.printStackTrace();
}
}
void draw_wave(Canvas canvas) {
float h = height / 2;
path.moveTo(0, h / 2 + y_values[0]); // start position
for (int i = 1; i < y_values.length - 1; i += 2) {
path.quadTo(
i * space,
h / 2 + y_values[i],
(i + 1) * space,
h / 2 + y_values[i + 1]); // create bezier between critical points
}
canvas.drawPath(path, paint);
path.reset();
}
private void handDraw(byte[] packetData) {
try {
int penWidthNum = myConvertByteArrToInt_bigend(packetData, 4);
int penColorNum = myConvertByteArrToInt_bigend(packetData, 8);
int nums = myConvertByteArrToInt_bigend(packetData, 12);
int BYTES_PER_COORDINATE = 2;
for (int i = 0; i < nums / 4; i++) {
int x =
xCoordinateMap(
myConvertByteArrToShort_bigend(packetData, 16 + i * 2 * BYTES_PER_COORDINATE));
int y =
yCoordinateMap(
myConvertByteArrToShort_bigend(
packetData, 16 + i * 2 * BYTES_PER_COORDINATE + BYTES_PER_COORDINATE));
String str = (i + 1) + " (x=" + x + ",y=" + y + ")";
writeToMyLogFile(str);
if (i == 0) {
lastX = x;
lastY = y;
mPath = new Path();
mPath.moveTo(x, y);
mPaint = getAPaint();
mPaint.setStrokeWidth(penWidthMap.get(penWidthNum));
mPaint.setColor(penColorMap.get(penColorNum));
HistoryItem item = new HistoryItem(HistoryItem.TYPE_PATH, mPaint, mPath, null, null);
undoPathList.add(item); //
mCacheCanvas.drawPoint(x, y, mPaint);
} else {
int dx = Math.abs(x - lastX);
int dy = Math.abs(y - lastY);
if (dx >= BezierCurveMinGap || dy >= BezierCurveMinGap) {
mPath.quadTo(lastX, lastY, ((lastX + x) / 2.0f), ((lastY + y) / 2.0f));
lastX = x;
lastY = y;
mCacheCanvas.drawPath(mPath, mPaint);
handler.sendEmptyMessage(CustomDrawViewCH_INVALIDATE);
}
}
}
} catch (Exception e) {
e.printStackTrace();
Logg.e(TAG, "handdraw error");
}
}
