Java Code Examples for android.graphics.Path#rCubicTo()
The following examples show how to use
android.graphics.Path#rCubicTo() .
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Example 1
| Source File: CubicBezierCurve2D.java From ncalc with GNU General Public License v3.0 | 5 votes |
|
public Path getGeneralPath() {
Path path = new Path();
path.moveTo((float) x1, (float) y1);
path.rCubicTo((float) ctrlx1, (float) ctrly1, (float) ctrlx2, (float) ctrly2, (float) x2, (float) y2);
return path;
}
Example 2
| Source File: EllipseArc2D.java From ncalc with GNU General Public License v3.0 | 5 votes |
|
public Path appendPath(Path path) {
// number of curves to approximate the arc
int nSeg = (int) ceil(abs(angleExtent) / (PI / 2));
nSeg = min(nSeg, 4);
// angular extent of each curve
double ext = angleExtent / nSeg;
// compute coefficient
double k = btan(abs(ext));
for (int i = 0; i < nSeg; i++) {
// position of the two extremities
double ti0 = abs(i * ext);
double ti1 = abs((i + 1) * ext);
// extremity points
Point2D p1 = this.point(ti0);
Point2D p2 = this.point(ti1);
// tangent vectors, multiplied by appropriate coefficient
Vector2D v1 = this.tangent(ti0).times(k);
Vector2D v2 = this.tangent(ti1).times(k);
// append a cubic curve to the path
path.rCubicTo((float) (p1.x() + v1.x()), (float) (p1.y() + v1.y()),
(float) (p2.x() - v2.x()), (float) (p2.y() - v2.y()),
(float) p2.x(), (float) p2.y());
}
return path;
}
Example 3
| Source File: CircleArc2D.java From ncalc with GNU General Public License v3.0 | 5 votes |
|
public Path appendPath(Path path) {
// number of curves to approximate the arc
int nSeg = (int) ceil(abs(angleExtent) / (PI / 2));
nSeg = min(nSeg, 4);
// angular extent of each curve
double ext = angleExtent / nSeg;
// compute coefficient
double k = btan(abs(ext));
for (int i = 0; i < nSeg; i++) {
// position of the two extremities
double ti0 = abs(i * ext);
double ti1 = abs((i + 1) * ext);
// extremity points
Point2D p1 = this.point(ti0);
Point2D p2 = this.point(ti1);
// tangent vectors, multiplied by appropriate coefficient
Vector2D v1 = this.tangent(ti0).times(k);
Vector2D v2 = this.tangent(ti1).times(k);
// append a cubic curve to the path
path.rCubicTo(
(float) (p1.x() + v1.x()), (float) (p1.y() + v1.y()),
(float) (p2.x() - v2.x()), (float) (p2.y() - v2.y()),
(float) (p2.x()), (float) (p2.y()));
}
return path;
}
Example 4
| Source File: RoundedCornersDrawable.java From Dashchan with Apache License 2.0 | 5 votes |
|
@Override
public void setBounds(int left, int top, int right, int bottom) {
Rect bounds = getBounds();
if (bounds.left != left || bounds.top != top || bounds.right != right || bounds.bottom != bottom) {
Path path = this.path;
path.rewind();
float radius = this.radius;
float shift = ((float) Math.sqrt(2) - 1f) * radius * 4f / 3f;
path.moveTo(left, top);
path.rLineTo(radius, 0);
path.rCubicTo(-shift, 0, -radius, radius - shift, -radius, radius);
path.close();
path.moveTo(right, top);
path.rLineTo(-radius, 0);
path.rCubicTo(shift, 0, radius, radius - shift, radius, radius);
path.close();
path.moveTo(left, bottom);
path.rLineTo(radius, 0);
path.rCubicTo(-shift, 0, -radius, shift - radius, -radius, -radius);
path.close();
path.moveTo(right, bottom);
path.rLineTo(-radius, 0);
path.rCubicTo(shift, 0, radius, shift - radius, radius, -radius);
path.close();
}
super.setBounds(left, top, right, bottom);
}
Example 5
| Source File: SVGAPath.java From VideoOS-Android-SDK with GNU General Public License v3.0 | 4 votes |
|
private void operate(Path finalPath, String method, StringTokenizer args) {
float x0 = 0.0f;
float y0 = 0.0f;
float x1 = 0.0f;
float y1 = 0.0f;
float x2 = 0.0f;
float y2 = 0.0f;
try {
int index = 0;
while (args.hasMoreTokens()) {
String s = args.nextToken();
if (TextUtils.isEmpty(s)) {
continue;
}
if (index == 0) {
x0 = Float.valueOf(s);
}
if (index == 1) {
y0 = Float.valueOf(s);
}
if (index == 2) {
x1 = Float.valueOf(s);
}
if (index == 3) {
y1 = Float.valueOf(s);
}
if (index == 4) {
x2 = Float.valueOf(s);
}
if (index == 5) {
y2 = Float.valueOf(s);
}
index++;
}
} catch (Exception e) {
}
SVGAPoint currentPoint = new SVGAPoint(0.0f, 0.0f, 0.0f);
if ("M".equals(method)) {
finalPath.moveTo(x0, y0);
currentPoint = new SVGAPoint(x0, y0, 0.0f);
} else if ("m".equals(method)) {
finalPath.rMoveTo(x0, y0);
currentPoint = new SVGAPoint(currentPoint.x + x0, currentPoint.y + y0, 0.0f);
}
if ("L".equals(method)) {
finalPath.lineTo(x0, y0);
} else if ("l".equals(method)) {
finalPath.rLineTo(x0, y0);
}
if ("C".equals(method)) {
finalPath.cubicTo(x0, y0, x1, y1, x2, y2);
} else if ("c".equals(method)) {
finalPath.rCubicTo(x0, y0, x1, y1, x2, y2);
}
if ("Q".equals(method)) {
finalPath.quadTo(x0, y0, x1, y1);
} else if ("q".equals(method)) {
finalPath.rQuadTo(x0, y0, x1, y1);
}
if ("H".equals(method)) {
finalPath.lineTo(x0, currentPoint.y);
} else if ("h".equals(method)) {
finalPath.rLineTo(x0, 0f);
}
if ("V".equals(method)) {
finalPath.lineTo(currentPoint.x, x0);
} else if ("v".equals(method)) {
finalPath.rLineTo(0f, x0);
}
if ("Z".equals(method)) {
finalPath.close();
} else if ("z".equals(method)) {
finalPath.close();
}
}
Example 6
| Source File: CubicBezierCurve2D.java From ncalc with GNU General Public License v3.0 | 4 votes |
|
public Path appendPath(Path path) {
path.moveTo((float) x1, (float) y1);
path.rCubicTo((float) ctrlx1, (float) ctrly1, (float) ctrlx2, (float) ctrly2, (float) x2, (float) y2);
return path;
}
Example 7
| Source File: VectorPathParser.java From SVG-Android with Apache License 2.0 | 4 votes |
|
private static void arcToBezier(Path p,
double cx,
double cy,
double a,
double b,
double e1x,
double e1y,
double theta,
double start,
double sweep) {
int numSegments = (int) Math.ceil(Math.abs(sweep * 4 / Math.PI));
double eta1 = start;
double cosTheta = Math.cos(theta);
double sinTheta = Math.sin(theta);
double cosEta1 = Math.cos(eta1);
double sinEta1 = Math.sin(eta1);
double ep1x = (-a * cosTheta * sinEta1) - (b * sinTheta * cosEta1);
double ep1y = (-a * sinTheta * sinEta1) + (b * cosTheta * cosEta1);
double anglePerSegment = sweep / numSegments;
for (int i = 0; i < numSegments; i++) {
double eta2 = eta1 + anglePerSegment;
double sinEta2 = Math.sin(eta2);
double cosEta2 = Math.cos(eta2);
double e2x = cx + (a * cosTheta * cosEta2) - (b * sinTheta * sinEta2);
double e2y = cy + (a * sinTheta * cosEta2) + (b * cosTheta * sinEta2);
double ep2x = -a * cosTheta * sinEta2 - b * sinTheta * cosEta2;
double ep2y = -a * sinTheta * sinEta2 + b * cosTheta * cosEta2;
double tanDiff2 = Math.tan((eta2 - eta1) / 2);
double alpha =
Math.sin(eta2 - eta1) * (Math.sqrt(4 + (3 * tanDiff2 * tanDiff2)) - 1) / 3;
double q1x = e1x + alpha * ep1x;
double q1y = e1y + alpha * ep1y;
double q2x = e2x - alpha * ep2x;
double q2y = e2y - alpha * ep2y;
final float delta_q1x = (float) q1x - (float) e1x;
final float delta_q1y = (float) q1y - (float) e1y;
final float delta_q2x = (float) q2x - (float) e1x;
final float delta_q2y = (float) q2y - (float) e1y;
final float delta_e2x = (float) e2x - (float) e1x;
final float delta_e2y = (float) e2y - (float) e1y;
p.rCubicTo(delta_q1x, delta_q1y, delta_q2x, delta_q2y, delta_e2x, delta_e2y);
eta1 = eta2;
e1x = e2x;
e1y = e2y;
ep1x = ep2x;
ep1y = ep2y;
}
}
