Java Code Examples for android.graphics.Canvas#drawPoint()
The following examples show how to use
android.graphics.Canvas#drawPoint() .
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Example 1
| Source File: CaptureActivity.java From reacteu-app with MIT License | 6 votes |
|
/**
* Superimpose a line for 1D or dots for 2D to highlight the key features of the barcode.
*
* @param barcode A bitmap of the captured image.
* @param rawResult The decoded results which contains the points to draw.
*/
private void drawResultPoints(Bitmap barcode, Result rawResult) {
ResultPoint[] points = rawResult.getResultPoints();
if (points != null && points.length > 0) {
Canvas canvas = new Canvas(barcode);
Paint paint = new Paint();
paint.setColor(getResources().getColor(fakeR.getId("color", "result_points")));
if (points.length == 2) {
paint.setStrokeWidth(4.0f);
drawLine(canvas, paint, points[0], points[1]);
} else if (points.length == 4 &&
(rawResult.getBarcodeFormat() == BarcodeFormat.UPC_A ||
rawResult.getBarcodeFormat() == BarcodeFormat.EAN_13)) {
// Hacky special case -- draw two lines, for the barcode and metadata
drawLine(canvas, paint, points[0], points[1]);
drawLine(canvas, paint, points[2], points[3]);
} else {
paint.setStrokeWidth(10.0f);
for (ResultPoint point : points) {
canvas.drawPoint(point.getX(), point.getY(), paint);
}
}
}
}
Example 2
| Source File: CaptureActivity.java From analyzer-of-android-for-Apache-Weex with Apache License 2.0 | 5 votes |
|
/**
* Superimpose a line for 1D or dots for 2D to highlight the key features of
* the barcode.
*
* @param barcode
* A bitmap of the captured image.
* @param scaleFactor
* amount by which thumbnail was scaled
* @param rawResult
* The decoded results which contains the points to draw.
*/
private void drawResultPoints(Bitmap barcode, float scaleFactor,
Result rawResult) {
ResultPoint[] points = rawResult.getResultPoints();
if (points != null && points.length > 0) {
Canvas canvas = new Canvas(barcode);
Paint paint = new Paint();
paint.setColor(getResources().getColor(R.color.result_points));
if (points.length == 2) {
paint.setStrokeWidth(4.0f);
drawLine(canvas, paint, points[0], points[1], scaleFactor);
} else if (points.length == 4
&& (rawResult.getBarcodeFormat() == BarcodeFormat.UPC_A || rawResult
.getBarcodeFormat() == BarcodeFormat.EAN_13)) {
// Hacky special case -- draw two lines, for the barcode and
// metadata
drawLine(canvas, paint, points[0], points[1], scaleFactor);
drawLine(canvas, paint, points[2], points[3], scaleFactor);
} else {
paint.setStrokeWidth(10.0f);
for (ResultPoint point : points) {
if (point != null) {
canvas.drawPoint(scaleFactor * point.getX(),
scaleFactor * point.getY(), paint);
}
}
}
}
}
Example 3
| Source File: SnowflakesEffect.java From Telegram with GNU General Public License v2.0 | 5 votes |
|
public void draw(Canvas canvas) {
switch (type) {
case 0: {
particlePaint.setAlpha((int) (255 * alpha));
canvas.drawPoint(x, y, particlePaint);
break;
}
case 1:
default: {
particleThinPaint.setAlpha((int) (255 * alpha));
float angle = (float) -Math.PI / 2;
float px = AndroidUtilities.dpf2(2.0f) * 2 * scale;
float px1 = -AndroidUtilities.dpf2(0.57f) * 2 * scale;
float py1 = AndroidUtilities.dpf2(1.55f) * 2 * scale;
for (int a = 0; a < 6; a++) {
float x1 = (float) Math.cos(angle) * px;
float y1 = (float) Math.sin(angle) * px;
float cx = x1 * 0.66f;
float cy = y1 * 0.66f;
canvas.drawLine(x, y, x + x1, y + y1, particleThinPaint);
float angle2 = (float) (angle - Math.PI / 2);
x1 = (float) (Math.cos(angle2) * px1 - Math.sin(angle2) * py1);
y1 = (float) (Math.sin(angle2) * px1 + Math.cos(angle2) * py1);
canvas.drawLine(x + cx, y + cy, x + x1, y + y1, particleThinPaint);
x1 = (float) (-Math.cos(angle2) * px1 - Math.sin(angle2) * py1);
y1 = (float) (-Math.sin(angle2) * px1 + Math.cos(angle2) * py1);
canvas.drawLine(x + cx, y + cy, x + x1, y + y1, particleThinPaint);
angle += angleDiff;
}
break;
}
}
}
Example 4
| Source File: DrawPoint.java From PaintView with MIT License | 5 votes |
|
@Override
public void draw(Canvas canvas, Matrix matrix) {
//缩放坐标映射
matrix.getValues(matrixValues);
x = x * matrixValues[0] + y * matrixValues[1] + matrixValues[2];
y = x * matrixValues[3] + y * matrixValues[4] + matrixValues[5];
canvas.drawPoint(x, y, paint.setStrokeWidth());
}
Example 5
| Source File: RxShineView.java From RxTools-master with Apache License 2.0 | 5 votes |
|
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
for (int i = 0; i < shineCount; i++) {
if (allowRandomColor) {
paint.setColor(colorRandom[Math.abs(colorCount / 2 - i) >= colorCount ? colorCount - 1 : Math.abs(colorCount / 2 - i)]);
}
canvas.drawArc(rectF, 360f / shineCount * i + 1 + ((value - 1) * turnAngle), 0.1f, false, getConfigPaint(paint));
}
for (int i = 0; i < shineCount; i++) {
if (allowRandomColor) {
paint.setColor(colorRandom[Math.abs(colorCount / 2 - i) >= colorCount ? colorCount - 1 : Math.abs(colorCount / 2 - i)]);
}
canvas.drawArc(rectFSmall, 360f / shineCount * i + 1 - smallOffsetAngle + ((value - 1) * turnAngle), 0.1f, false, getConfigPaint(paintSmall));
}
paint.setStrokeWidth(btnWidth * (clickValue) * (shineDistanceMultiple - distanceOffset));
if (clickValue != 0) {
paint2.setStrokeWidth(btnWidth * (clickValue) * (shineDistanceMultiple - distanceOffset) - 8);
} else {
paint2.setStrokeWidth(0);
}
canvas.drawPoint(centerAnimX, centerAnimY, paint);
canvas.drawPoint(centerAnimX, centerAnimY, paint2);
if (mRxShineAnimator != null && !isRun) {
isRun = true;
showAnimation(mRxShineButton);
}
}
Example 6
| Source File: ScatterChart.java From MiBandDecompiled with Apache License 2.0 | 5 votes |
|
public void drawLegendShape(Canvas canvas, SimpleSeriesRenderer simpleseriesrenderer, float f, float f1, int i, Paint paint)
{
if (((XYSeriesRenderer)simpleseriesrenderer).isFillPoints())
{
paint.setStyle(android.graphics.Paint.Style.FILL);
} else
{
paint.setStyle(android.graphics.Paint.Style.STROKE);
}
switch (b.a[((XYSeriesRenderer)simpleseriesrenderer).getPointStyle().ordinal()])
{
default:
return;
case 1: // '\001'
a(canvas, paint, f + 10F, f1);
return;
case 2: // '\002'
b(canvas, paint, f + 10F, f1);
return;
case 3: // '\003'
a(canvas, paint, new float[6], f + 10F, f1);
return;
case 4: // '\004'
c(canvas, paint, f + 10F, f1);
return;
case 5: // '\005'
b(canvas, paint, new float[8], f + 10F, f1);
return;
case 6: // '\006'
canvas.drawPoint(f + 10F, f1, paint);
break;
}
}
Example 7
| Source File: BaseDraw.java From zone-sdk with MIT License | 5 votes |
|
private void drawMe(Canvas canvas) {
int size=50;
String dot="dot:";
String line="line:";
String lines="lines:";
Paint p = new Paint();
p.setColor(Color.BLACK);// 设置红色
p.setStyle(Paint.Style.FILL);
p.setTextSize(size);
canvas.drawText(dot,0,size,p);
canvas.drawText(line,0,size*2,p);
canvas.drawText(lines,0,size*3,p);
p.setStrokeWidth(10);
//两个字母是一个汉子 记 size
canvas.drawPoint(size*(float)Math.ceil(dot.toCharArray().length/2),size,p);
//starX1,startY2,enxX1,endY1 两个字母是一个汉子 记 size
canvas.drawLine(size*(float)Math.ceil(line.toCharArray().length/2),size*2,size*(float)Math.ceil(line.toCharArray().length/2)+100,size*2,p);
//starX1,startY2,enxX1,endY1......starXn,startYn,enxXn,endYn
float[] pts=new float[]{
size*(float)Math.ceil(lines.toCharArray().length/2),size*3,size*(float)Math.ceil(lines.toCharArray().length/2)+100,size*3,
size*(float)Math.ceil(lines.toCharArray().length/2)*2,size*3,size*(float)Math.ceil(lines.toCharArray().length/2)*2+100,size*3,
};
canvas.drawLines(pts,p);
int offset=100;
canvas.drawRect(offset,size*4,size+offset,size*5,p);
int radius=50;
canvas.drawCircle(size+offset+radius,size*4,radius,p);
}
Example 8
| Source File: StrokeView.java From sinovoice-pathfinder with MIT License | 5 votes |
|
/**
* ���Ʊ�ʽ��Ч��
*
* @param x
* @param y
*/
private void drawPenScript(int x, int y) {
int penScriptResult = HWRManager.instance().penScript(x, y);
Canvas canvas = new Canvas(this.mPenScriptBitmap);
if (penScriptResult == HciErrorCode.HCI_ERR_NONE) {
List<HwrPenScriptResultItem> items = HWRManager
.instance().getPenScriptRetList();
for (int k = 0; k < items.size(); k++) {
HwrPenScriptResultItem item = items.get(k);
short[] pageImg = item.getPageImg();
long colorL = item.getPenColor();
// ��unsigned ��ֵ��Ϊ ��ɫֵ
colorL = colorL & 0xffffffL;
colorL = colorL | 0xff000000L;
mBrushPaint.setColor((int) colorL);
for (int h = 0; h < item.getHeight(); h++) {
for (int w = 0; w < item.getWidth(); w++) {
int pos = h * item.getWidth() + w;
if (pageImg[pos] == 0) {
canvas.drawPoint(w + item.getX(), h + item.getY(),
mBrushPaint);
}
}
}
}
} else {
StrokeMgr.instance().isBrush = false;
}
}
Example 9
| Source File: SnowflakesEffect.java From Telegram-FOSS with GNU General Public License v2.0 | 5 votes |
|
public void draw(Canvas canvas) {
switch (type) {
case 0: {
particlePaint.setAlpha((int) (255 * alpha));
canvas.drawPoint(x, y, particlePaint);
break;
}
case 1:
default: {
particleThinPaint.setAlpha((int) (255 * alpha));
float angle = (float) -Math.PI / 2;
float px = AndroidUtilities.dpf2(2.0f) * 2 * scale;
float px1 = -AndroidUtilities.dpf2(0.57f) * 2 * scale;
float py1 = AndroidUtilities.dpf2(1.55f) * 2 * scale;
for (int a = 0; a < 6; a++) {
float x1 = (float) Math.cos(angle) * px;
float y1 = (float) Math.sin(angle) * px;
float cx = x1 * 0.66f;
float cy = y1 * 0.66f;
canvas.drawLine(x, y, x + x1, y + y1, particleThinPaint);
float angle2 = (float) (angle - Math.PI / 2);
x1 = (float) (Math.cos(angle2) * px1 - Math.sin(angle2) * py1);
y1 = (float) (Math.sin(angle2) * px1 + Math.cos(angle2) * py1);
canvas.drawLine(x + cx, y + cy, x + x1, y + y1, particleThinPaint);
x1 = (float) (-Math.cos(angle2) * px1 - Math.sin(angle2) * py1);
y1 = (float) (-Math.sin(angle2) * px1 + Math.cos(angle2) * py1);
canvas.drawLine(x + cx, y + cy, x + x1, y + y1, particleThinPaint);
angle += angleDiff;
}
break;
}
}
}
Example 10
| Source File: DoodleView.java From Nimingban with Apache License 2.0 | 5 votes |
|
public void draw(Canvas canvas, Paint paint) {
paint.setColor(mColor);
paint.setStrokeWidth(mWidth);
if (mIsDot) {
canvas.drawPoint(mStartX, mStartY, paint);
} else {
canvas.drawPath(mPath, paint);
}
}
Example 11
| Source File: PressView.java From ProjectX with Apache License 2.0 | 5 votes |
|
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
final ArrayList<PointF> points = mPoints;
final int count = points.size();
if (count <= 0)
return;
if (count == 1) {
final PointF p = points.get(0);
canvas.drawPoint(p.x, p.y, mPaint);
return;
}
canvas.drawPath(mPath, mPaint);
}
Example 12
| Source File: SnowflakesEffect.java From TelePlus-Android with GNU General Public License v2.0 | 5 votes |
|
public void draw(Canvas canvas) {
switch (type) {
case 0: {
particlePaint.setAlpha((int) (255 * alpha));
canvas.drawPoint(x, y, particlePaint);
break;
}
case 1:
default: {
particleThinPaint.setAlpha((int) (255 * alpha));
float angle = (float) -Math.PI / 2;
float px = AndroidUtilities.dpf2(2.0f) * 2 * scale;
float px1 = -AndroidUtilities.dpf2(0.57f) * 2 * scale;
float py1 = AndroidUtilities.dpf2(1.55f) * 2 * scale;
for (int a = 0; a < 6; a++) {
float x1 = (float) Math.cos(angle) * px;
float y1 = (float) Math.sin(angle) * px;
float cx = x1 * 0.66f;
float cy = y1 * 0.66f;
canvas.drawLine(x, y, x + x1, y + y1, particleThinPaint);
float angle2 = (float) (angle - Math.PI / 2);
x1 = (float) (Math.cos(angle2) * px1 - Math.sin(angle2) * py1);
y1 = (float) (Math.sin(angle2) * px1 + Math.cos(angle2) * py1);
canvas.drawLine(x + cx, y + cy, x + x1, y + y1, particleThinPaint);
x1 = (float) (-Math.cos(angle2) * px1 - Math.sin(angle2) * py1);
y1 = (float) (-Math.sin(angle2) * px1 + Math.cos(angle2) * py1);
canvas.drawLine(x + cx, y + cy, x + x1, y + y1, particleThinPaint);
angle += angleDiff;
}
break;
}
}
}
Example 13
| Source File: PointView.java From WidgetCase with Apache License 2.0 | 5 votes |
|
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
mPaint.setColor(mColor);
if (mStyle == Point_Style.CIRCLE) {
canvas.drawCircle(mPointWH / 2, mPointWH / 2, mPointWH / 2, mPaint);
} else if (mStyle == Point_Style.SQUARE) {
mPaint.setStrokeWidth(12);
canvas.drawPoint(0, mPointWH / 2, mPaint);
} else {
}
}
Example 14
| Source File: NinePointView.java From ClockView with Apache License 2.0 | 5 votes |
|
public void drawCyanPoint(Canvas canvas, Point point){
String s =getKey(point);
String [] strings = s.split(":");
int i= Integer.parseInt(strings[0]);
int j=Integer.parseInt(strings[1]);
pointPaint.setColor(Color.CYAN);
canvas.drawPoint(mSquarewidth * (0.5f + i),mSquarewidth * (0.5f + j),pointPaint);
}
Example 15
| Source File: ScannerView.java From green_android with GNU General Public License v3.0 | 4 votes |
|
@Override
public void onDraw(final Canvas canvas) {
if (frame == null)
return;
final long now = System.currentTimeMillis();
final int width = canvas.getWidth();
final int height = canvas.getHeight();
final float[] point = new float[2];
// draw mask darkened
maskPaint.setColor(isResult ? maskResultColor : maskColor);
canvas.drawRect(0, 0, width, frame.top, maskPaint);
canvas.drawRect(0, frame.top, frame.left, frame.bottom + 1, maskPaint);
canvas.drawRect(frame.right + 1, frame.top, width, frame.bottom + 1, maskPaint);
canvas.drawRect(0, frame.bottom + 1, width, height, maskPaint);
if (isResult) {
laserPaint.setColor(dotResultColor);
laserPaint.setAlpha(160);
dotPaint.setColor(dotResultColor);
} else {
laserPaint.setColor(laserColor);
final boolean laserPhase = (now / 600) % 2 == 0;
laserPaint.setAlpha(laserPhase ? 160 : 255);
dotPaint.setColor(dotColor);
// schedule redraw
postInvalidateDelayed(LASER_ANIMATION_DELAY_MS);
}
canvas.drawRect(frame, laserPaint);
// draw points
for (final Iterator<Map.Entry<float[], Long>> i = dots.entrySet().iterator(); i.hasNext();) {
final Map.Entry<float[], Long> entry = i.next();
final long age = now - entry.getValue();
if (age < DOT_TTL_MS) {
dotPaint.setAlpha((int) ((DOT_TTL_MS - age) * 256 / DOT_TTL_MS));
matrix.mapPoints(point, entry.getKey());
canvas.drawPoint(point[0], point[1], dotPaint);
} else {
i.remove();
}
}
}
Example 16
| Source File: DegreeSeekBar.java From imsdk-android with MIT License | 4 votes |
|
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.getClipBounds(mCanvasClipBounds);
int zeroIndex = mPointCount / 2 + (0 - mCurrentDegrees) / 2;
mPointPaint.setColor(mPointColor);
for (int i = 0; i < mPointCount; i++) {
if (i > zeroIndex - Math.abs(mMinReachableDegrees) / 2
&& i < zeroIndex + Math.abs(mMaxReachableDegrees) / 2
&& mScrollStarted) {
mPointPaint.setAlpha(255);
} else {
mPointPaint.setAlpha(100);
}
if (i > mPointCount / 2 - 8
&& i < mPointCount / 2 + 8
&& i > zeroIndex - Math.abs(mMinReachableDegrees) / 2
&& i < zeroIndex + Math.abs(mMaxReachableDegrees) / 2) {
if (mScrollStarted) {
mPointPaint.setAlpha(Math.abs(mPointCount / 2 - i) * 255 / 8);
} else {
mPointPaint.setAlpha(Math.abs(mPointCount / 2 - i) * 100 / 8);
}
}
canvas.drawPoint(mCanvasClipBounds.centerX() + (i - mPointCount / 2) * mPointMargin,
mCanvasClipBounds.centerY(), mPointPaint);
if (mCurrentDegrees != 0 && i == zeroIndex) {
if (mScrollStarted) {
mTextPaint.setAlpha(255);
} else {
mTextPaint.setAlpha(192);
}
mPointPaint.setStrokeWidth(4);
canvas.drawPoint((mCanvasClipBounds.centerX() + (i - mPointCount / 2) * mPointMargin),
mCanvasClipBounds.centerY(), mPointPaint);
mPointPaint.setStrokeWidth(2);
mTextPaint.setAlpha(100);
}
}
for (int i = -180; i <= 180; i += 15) {
if (i >= mMinReachableDegrees && i <= mMaxReachableDegrees) {
drawDegreeText(i, canvas, true);
} else {
drawDegreeText(i, canvas, false);
}
}
mTextPaint.setTextSize(28f);
mTextPaint.setAlpha(255);
mTextPaint.setColor(mCenterTextColor);
if (mCurrentDegrees >= 10) {
canvas.drawText(mCurrentDegrees + suffix, getWidth() / 2 - mTextWidths[0], mBaseLine,
mTextPaint);
} else if (mCurrentDegrees <= -10) {
canvas.drawText(mCurrentDegrees + suffix, getWidth() / 2 - mTextWidths[0] / 2 * 3, mBaseLine,
mTextPaint);
} else if (mCurrentDegrees < 0) {
canvas.drawText(mCurrentDegrees + suffix, getWidth() / 2 - mTextWidths[0], mBaseLine,
mTextPaint);
} else {
canvas.drawText(mCurrentDegrees + suffix, getWidth() / 2 - mTextWidths[0] / 2, mBaseLine,
mTextPaint);
}
mTextPaint.setAlpha(100);
mTextPaint.setTextSize(24f);
mTextPaint.setColor(mTextColor);
//画中心三角
mCirclePaint.setColor(mCenterTextColor);
canvas.drawPath(mIndicatorPath, mCirclePaint);
mCirclePaint.setColor(mCenterTextColor);
}
Example 17
| Source File: ScannerView.java From bither-android with Apache License 2.0 | 4 votes |
|
@Override
public void onDraw(final Canvas canvas) {
if (frame == null)
return;
final long now = System.currentTimeMillis();
final int width = canvas.getWidth();
final int height = canvas.getHeight();
// draw mask darkened
maskPaint.setColor(resultBitmap != null ? resultColor : maskColor);
canvas.drawRect(0, 0, width, frame.top, maskPaint);
canvas.drawRect(0, frame.top, frame.left, frame.bottom + 1, maskPaint);
canvas.drawRect(frame.right + 1, frame.top, width, frame.bottom + 1,
maskPaint);
canvas.drawRect(0, frame.bottom + 1, width, height, maskPaint);
if (resultBitmap != null) {
canvas.drawBitmap(resultBitmap, null, frame, maskPaint);
} else {
// draw red "laser scanner" to show decoding is active
final boolean laserPhase = (now / 600) % 2 == 0;
laserPaint.setAlpha(laserPhase ? 160 : 255);
canvas.drawRect(frame, laserPaint);
// draw points
final int frameLeft = frame.left;
final int frameTop = frame.top;
final float scaleX = frame.width() / (float) framePreview.width();
final float scaleY = frame.height() / (float) framePreview.height();
for (final Iterator<Map.Entry<ResultPoint, Long>> i = dots
.entrySet().iterator(); i.hasNext();) {
final Map.Entry<ResultPoint, Long> entry = i.next();
final long age = now - entry.getValue();
if (age < DOT_TTL_MS) {
dotPaint.setAlpha((int) ((DOT_TTL_MS - age) * 256 / DOT_TTL_MS));
final ResultPoint point = entry.getKey();
canvas.drawPoint(frameLeft + (int) (point.getX() * scaleX),
frameTop + (int) (point.getY() * scaleY), dotPaint);
} else {
i.remove();
}
}
// schedule redraw
postInvalidateDelayed(LASER_ANIMATION_DELAY_MS);
}
}
Example 18
| Source File: SecretMediaViewer.java From TelePlus-Android with GNU General Public License v2.0 | 4 votes |
|
@SuppressLint("DrawAllocation")
@Override
protected void onDraw(Canvas canvas) {
if (currentMessageObject == null || currentMessageObject.messageOwner.destroyTime == 0) {
return;
}
canvas.drawCircle(getMeasuredWidth() - AndroidUtilities.dp(16 + 19), getMeasuredHeight() / 2, AndroidUtilities.dp(16), circlePaint);
float progress;
if (useVideoProgress) {
if (videoPlayer != null) {
long duration = videoPlayer.getDuration();
long position = videoPlayer.getCurrentPosition();
if (duration != C.TIME_UNSET && position != C.TIME_UNSET) {
progress = 1.0f - (position / (float) duration);
} else {
progress = 1;
}
} else {
progress = 1;
}
} else {
long msTime = System.currentTimeMillis() + ConnectionsManager.getInstance(currentAccount).getTimeDifference() * 1000;
progress = Math.max(0, destroyTime - msTime) / (destroyTtl * 1000.0f);
}
int x = getMeasuredWidth() - AndroidUtilities.dp(32 - 11 + 19);
int y = (getMeasuredHeight() - AndroidUtilities.dp(14)) / 2 - AndroidUtilities.dp(0.5f);
drawable.setBounds(x, y, x + AndroidUtilities.dp(10), y + AndroidUtilities.dp(14));
drawable.draw(canvas);
float radProgress = -360 * progress;
canvas.drawArc(deleteProgressRect, -90, radProgress, false, afterDeleteProgressPaint);
int count = particles.size();
for (int a = 0; a < count; a++) {
Particle particle = particles.get(a);
particlePaint.setAlpha((int) (255 * particle.alpha));
canvas.drawPoint(particle.x, particle.y, particlePaint);
}
double vx = Math.sin(Math.PI / 180.0 * (radProgress - 90));
double vy = -Math.cos(Math.PI / 180.0 * (radProgress - 90));
int rad = AndroidUtilities.dp(14);
float cx = (float) (-vy * rad + deleteProgressRect.centerX());
float cy = (float) (vx * rad + deleteProgressRect.centerY());
for (int a = 0; a < 1; a++) {
Particle newParticle;
if (!freeParticles.isEmpty()) {
newParticle = freeParticles.get(0);
freeParticles.remove(0);
} else {
newParticle = new Particle();
}
newParticle.x = cx;
newParticle.y = cy;
double angle = (Math.PI / 180.0) * (Utilities.random.nextInt(140) - 70);
if (angle < 0) {
angle = Math.PI * 2 + angle;
}
newParticle.vx = (float) (vx * Math.cos(angle) - vy * Math.sin(angle));
newParticle.vy = (float) (vx * Math.sin(angle) + vy * Math.cos(angle));
newParticle.alpha = 1.0f;
newParticle.currentTime = 0;
newParticle.lifeTime = 400 + Utilities.random.nextInt(100);
newParticle.velocity = 20.0f + Utilities.random.nextFloat() * 4.0f;
particles.add(newParticle);
}
long newTime = System.currentTimeMillis();
long dt = (newTime - lastAnimationTime);
updateParticles(dt);
lastAnimationTime = newTime;
invalidate();
}
Example 19
| Source File: CoordinateView.java From ClockView with Apache License 2.0 | 4 votes |
|
@Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.translate(getWidth()/2,getHeight()/2);
canvas.drawPoint(0,0,mPaint);
canvas.drawPoints(new float[]{getWidth()/2*0.8f,0,
-getWidth()/2*0.8f,0,
0,getHeight()/2*0.8f,
0,-getHeight()/2*0.8f},mPaint);
mPaint.setColor(Color.GRAY);
canvas.drawLine(-getWidth()/2*0.8f,0,getWidth()/2*0.8f,0,mPaint);
canvas.drawLine(0,-getHeight()/2*0.8f,0,getHeight()/2*0.8f,mPaint);
mPaint.setColor(Color.BLACK);
//绘制X轴箭头
canvas.drawLines(new float[]{
getWidth()/2*0.8f,0,getWidth()/2*0.8f*0.95f,-getWidth()/2*0.8f*0.05f,
getWidth()/2*0.8f,0,getWidth()/2*0.8f*0.95f,getWidth()/2*0.8f*0.05f
},mPaint);
//绘制Y轴箭头
canvas.drawLines(new float[]{
0,getHeight()/2*0.8f,getWidth()/2*0.8f*0.05f,getHeight()/2*0.8f-getWidth()/2*0.8f*0.05f,
0,getHeight()/2*0.8f,-getWidth()/2*0.8f*0.05f,getHeight()/2*0.8f-getWidth()/2*0.8f*0.05f,
},mPaint);
Path path = new Path();
// Bitmap bitmap =BitmapFactory.decodeResource(getResources(), R.mipmap.single);
// Matrix matrix =new Matrix();
// System.out.println(bitmap.getWidth()+"//"+bitmap.getHeight());
// matrix.postScale(0.5f,0.5f);
// Bitmap b = bitmap.createBitmap(bitmap,0,0,bitmap.getWidth(),bitmap.getHeight(),matrix,true);
// path.addCircle(0,0,Math.min(bitmap.getWidth()/4,bitmap.getHeight()/4), Path.Direction.CW);
// canvas.clipPath(path, Region.Op.INTERSECT);
// canvas.drawBitmap(b,-bitmap.getWidth()/4,-bitmap.getHeight()/4,mPaint);
mPaint.setStyle(Paint.Style.FILL);
Path path1 = new Path();
Path path2 = new Path();
path1.moveTo(0,0);
path1.arcTo(new RectF(-200,-200,200,200),240,60,false);
path1.lineTo(0,0);
path2.moveTo(0,0);
path2.arcTo(new RectF(-300,-300,300,300),240,60,false);
path2.lineTo(0,0);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
path.op(path1,path2, Path.Op.XOR);
}
canvas.drawPath(path,mPaint);
}
Example 20
| Source File: HorTaperChart.java From WidgetCase with Apache License 2.0 | 4 votes |
|
/**
* 绘制图形
*
* @param canvas
* @param pf 开始绘制的点坐标
* @param topY 顶部y值
* @param paintColor 画笔颜色
* @param xValue 对应的数据值 x
* @param yValue 对应的数据值 y
*/
private void drawGraph(Canvas canvas, PointF pf, float topY, int paintColor, String xValue, float yValue) {
// 设置画笔颜色
mPaint.setColor(paintColor);
// 直接参与画图的path
Path path = new Path();
// 图形中心点x轴值
float centerX = pf.x + mLabelWidth / 2;
// 左侧控制点
PointF pfL = new PointF();
pfL.x = pf.x + mQuadXSpace;
pfL.y = pf.y - QUAD_Y_SPACE;
if (topY >= pfL.y) { // 极端场景处理：数据值的y坐标>=控制点的y坐标
if (topY >= mCanvasH - mOffBtm) { // 到底了，也就是数据为0的情况
if (yValue > 0f) { // 总得有点东西显示吧
// 控制点做调整
pfL.y = mCanvasH - mOffBtm - QUAD_Y_SPACE / 5;
topY = pfL.y - QUAD_Y_SPACE / 5;
} else {
topY = pfL.y = mCanvasH - mOffBtm;
}
} else {
topY = topY - mOffBtm;
pfL.y = topY + (mCanvasH - mOffBtm - pfL.y) / 2;
}
}
TaperChartBean bean = new TaperChartBean();
RectF rectF = new RectF(pf.x, topY, pf.x + mLabelWidth, pf.y);
bean.setRectF(rectF);
bean.setxValue(xValue);
bean.setyValue(yValue);
mList.add(bean);
Path pathL = new Path();
pathL.moveTo(pf.x, pf.y);
pathL.quadTo(pfL.x, pfL.y, centerX, topY);
pathL.lineTo(centerX, pf.y);
PointF pfR = new PointF();
pfR.x = pf.x + mLabelWidth - mQuadXSpace;
pfR.y = pfL.y;
// 右边图形路径
Path pathR = new Path();
pathR.moveTo(pf.x + mLabelWidth, pf.y);
pathR.quadTo(pfR.x, pfR.y, centerX, topY);
pathR.lineTo(centerX, pf.y);
// path路径组合
path.addPath(pathL);
path.addPath(pathR);
canvas.drawPath(path, mPaint);
drawTopValue(canvas, yValue, topY, centerX);
if (mIsShowDebug) {
// 左 - 控制点
canvas.drawPoint(pf.x + mQuadXSpace, pf.y - QUAD_Y_SPACE, mPointPaint);
// 右 - 控制点
canvas.drawPoint(pf.x + mLabelWidth - mQuadXSpace, pf.y - QUAD_Y_SPACE, mPointPaint);
//绘制测量线，便于观察绘制的准确性
canvas.drawLine(centerX, topY - DensityUtil.dp2px(5), centerX, pf.y, mLinePaint);
// 绘制高度测量线，便于观察绘制的准确性
mPaint.setStrokeWidth(1.5f);
canvas.drawLine(mYMaxStrW + mLeftAxisLabelMargin + mPaint.getStrokeWidth(),
topY, centerX, topY, mPaint);
}
}
