/**
* This is where the hard-to-parse paths are handled. Uppercase rules are absolute positions,
* lowercase are relative. Types of path rules:
*
* <p>
*
* <ol>
* <li>M/m - (x y)+ - Move to (without drawing)
* <li>Z/z - (no params) - Close path (back to starting point)
* <li>L/l - (x y)+ - Line to
* <li>H/h - x+ - Horizontal ine to
* <li>V/v - y+ - Vertical line to
* <li>C/c - (x1 y1 x2 y2 x y)+ - Cubic bezier to
* <li>S/s - (x2 y2 x y)+ - Smooth cubic bezier to (shorthand that assumes the x2, y2 from
* previous C/S is the x1, y1 of this bezier)
* <li>Q/q - (x1 y1 x y)+ - Quadratic bezier to
* <li>T/t - (x y)+ - Smooth quadratic bezier to (assumes previous control point is "reflection"
* of last one w.r.t. to current point)
* </ol>
*
* <p>Numbers are separate by whitespace, comma or nothing at all (!) if they are self-delimiting,
* (ie. begin with a - sign)
*
* @param s the path string from the XML
*/
private static Path doPath(String s) {
int n = s.length();
ParserHelper ph = new ParserHelper(s, 0);
ph.skipWhitespace();
Path p = new Path();
float lastX = 0;
float lastY = 0;
float lastX1 = 0;
float lastY1 = 0;
float subPathStartX = 0;
float subPathStartY = 0;
char prevCmd = 0;
while (ph.pos < n) {
char cmd = s.charAt(ph.pos);
switch (cmd) {
case '-':
case '+':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
if (prevCmd == 'm' || prevCmd == 'M') {
cmd = (char) (((int) prevCmd) - 1);
break;
} else if (prevCmd == 'c' || prevCmd == 'C') {
cmd = prevCmd;
break;
} else if (prevCmd == 'l' || prevCmd == 'L') {
cmd = prevCmd;
break;
}
default:
{
ph.advance();
prevCmd = cmd;
}
}
boolean wasCurve = false;
switch (cmd) {
case 'M':
case 'm':
{
float x = ph.nextFloat();
float y = ph.nextFloat();
if (cmd == 'm') {
subPathStartX += x;
subPathStartY += y;
p.rMoveTo(x, y);
lastX += x;
lastY += y;
} else {
subPathStartX = x;
subPathStartY = y;
p.moveTo(x, y);
lastX = x;
lastY = y;
}
break;
}
case 'Z':
case 'z':
{
p.close();
p.moveTo(subPathStartX, subPathStartY);
lastX = subPathStartX;
lastY = subPathStartY;
lastX1 = subPathStartX;
lastY1 = subPathStartY;
wasCurve = true;
break;
}
case 'L':
case 'l':
{
float x = ph.nextFloat();
float y = ph.nextFloat();
if (cmd == 'l') {
p.rLineTo(x, y);
lastX += x;
lastY += y;
} else {
p.lineTo(x, y);
lastX = x;
lastY = y;
}
break;
}
case 'H':
case 'h':
{
float x = ph.nextFloat();
if (cmd == 'h') {
p.rLineTo(x, 0);
lastX += x;
} else {
p.lineTo(x, lastY);
lastX = x;
}
break;
}
case 'V':
case 'v':
{
float y = ph.nextFloat();
if (cmd == 'v') {
p.rLineTo(0, y);
lastY += y;
} else {
p.lineTo(lastX, y);
lastY = y;
}
break;
}
case 'C':
case 'c':
{
wasCurve = true;
float x1 = ph.nextFloat();
float y1 = ph.nextFloat();
float x2 = ph.nextFloat();
float y2 = ph.nextFloat();
float x = ph.nextFloat();
float y = ph.nextFloat();
if (cmd == 'c') {
x1 += lastX;
x2 += lastX;
x += lastX;
y1 += lastY;
y2 += lastY;
y += lastY;
}
p.cubicTo(x1, y1, x2, y2, x, y);
lastX1 = x2;
lastY1 = y2;
lastX = x;
lastY = y;
break;
}
case 'S':
case 's':
{
wasCurve = true;
float x2 = ph.nextFloat();
float y2 = ph.nextFloat();
float x = ph.nextFloat();
float y = ph.nextFloat();
if (cmd == 's') {
x2 += lastX;
x += lastX;
y2 += lastY;
y += lastY;
}
float x1 = 2 * lastX - lastX1;
float y1 = 2 * lastY - lastY1;
p.cubicTo(x1, y1, x2, y2, x, y);
lastX1 = x2;
lastY1 = y2;
lastX = x;
lastY = y;
break;
}
case 'A':
case 'a':
{
float rx = ph.nextFloat();
float ry = ph.nextFloat();
float theta = ph.nextFloat();
int largeArc = (int) ph.nextFloat();
int sweepArc = (int) ph.nextFloat();
float x = ph.nextFloat();
float y = ph.nextFloat();
drawArc(p, lastX, lastY, x, y, rx, ry, theta, largeArc, sweepArc);
lastX = x;
lastY = y;
break;
}
}
if (!wasCurve) {
lastX1 = lastX;
lastY1 = lastY;
}
ph.skipWhitespace();
}
return p;
}
// draw path 96x96
public static void calcTurnPath(Path pathForTurn, TurnType turnType, Matrix transform) {
if (turnType == null) {
return;
}
pathForTurn.reset();
int c = 48;
int w = 16;
pathForTurn.moveTo(c, 94);
float sarrowL = 30; // side of arrow
float harrowL = (float) Math.sqrt(2) * sarrowL; // hypotenuse of arrow
float spartArrowL = (float) ((sarrowL - w / Math.sqrt(2)) / 2);
float hpartArrowL = (float) (harrowL - w) / 2;
if (TurnType.C.equals(turnType.getValue())) {
int h = 65;
pathForTurn.rMoveTo(w / 2, 0);
pathForTurn.rLineTo(0, -h);
pathForTurn.rLineTo(hpartArrowL, 0);
pathForTurn.rLineTo(-harrowL / 2, -harrowL / 2); // center
pathForTurn.rLineTo(-harrowL / 2, harrowL / 2);
pathForTurn.rLineTo(hpartArrowL, 0);
pathForTurn.rLineTo(0, h);
} else if (TurnType.TR.equals(turnType.getValue()) || TurnType.TL.equals(turnType.getValue())) {
int b = TurnType.TR.equals(turnType.getValue()) ? 1 : -1;
int h = 36;
float quadShiftX = 22;
float quadShiftY = 22;
pathForTurn.rMoveTo(-b * 8, 0);
pathForTurn.rLineTo(0, -h);
pathForTurn.rQuadTo(0, -quadShiftY, b * quadShiftX, -quadShiftY);
pathForTurn.rLineTo(0, hpartArrowL);
pathForTurn.rLineTo(b * harrowL / 2, -harrowL / 2); // center
pathForTurn.rLineTo(-b * harrowL / 2, -harrowL / 2);
pathForTurn.rLineTo(0, hpartArrowL);
pathForTurn.rQuadTo(-b * (quadShiftX + w), 0, -b * (quadShiftX + w), quadShiftY + w);
pathForTurn.rLineTo(0, h);
} else if (TurnType.TSLR.equals(turnType.getValue())
|| TurnType.TSLL.equals(turnType.getValue())) {
int b = TurnType.TSLR.equals(turnType.getValue()) ? 1 : -1;
int h = 40;
int quadShiftY = 22;
float quadShiftX = (float) (quadShiftY / (1 + Math.sqrt(2)));
float nQuadShiftX = (sarrowL - 2 * spartArrowL) - quadShiftX - w;
float nQuadShifty = quadShiftY + (sarrowL - 2 * spartArrowL);
pathForTurn.rMoveTo(-b * 4, 0);
pathForTurn.rLineTo(0, -h /* + partArrowL */);
pathForTurn.rQuadTo(
0,
-quadShiftY + quadShiftX /*- partArrowL*/,
b * quadShiftX,
-quadShiftY /*- partArrowL*/);
pathForTurn.rLineTo(b * spartArrowL, spartArrowL);
pathForTurn.rLineTo(0, -sarrowL); // center
pathForTurn.rLineTo(-b * sarrowL, 0);
pathForTurn.rLineTo(b * spartArrowL, spartArrowL);
pathForTurn.rQuadTo(b * nQuadShiftX, -nQuadShiftX, b * nQuadShiftX, nQuadShifty);
pathForTurn.rLineTo(0, h);
} else if (TurnType.TSHR.equals(turnType.getValue())
|| TurnType.TSHL.equals(turnType.getValue())) {
int b = TurnType.TSHR.equals(turnType.getValue()) ? 1 : -1;
int h = 45;
float quadShiftX = 22;
float quadShiftY = -(float) (quadShiftX / (1 + Math.sqrt(2)));
float nQuadShiftX = -(sarrowL - 2 * spartArrowL) - quadShiftX - w;
float nQuadShiftY = -quadShiftY + (sarrowL - 2 * spartArrowL);
pathForTurn.rMoveTo(-b * 8, 0);
pathForTurn.rLineTo(0, -h);
pathForTurn.rQuadTo(0, -(quadShiftX - quadShiftY), b * quadShiftX, quadShiftY);
pathForTurn.rLineTo(-b * spartArrowL, spartArrowL);
pathForTurn.rLineTo(b * sarrowL, 0); // center
pathForTurn.rLineTo(0, -sarrowL);
pathForTurn.rLineTo(-b * spartArrowL, spartArrowL);
pathForTurn.rCubicTo(
b * nQuadShiftX / 2,
nQuadShiftX / 2,
b * nQuadShiftX,
nQuadShiftX / 2,
b * nQuadShiftX,
nQuadShiftY);
pathForTurn.rLineTo(0, h);
} else if (TurnType.TU.equals(turnType.getValue())) {
int h = 54;
float quadShiftX = 13;
float quadShiftY = 13;
pathForTurn.rMoveTo(28, 0);
pathForTurn.rLineTo(0, -h);
pathForTurn.rQuadTo(0, -(quadShiftY + w), -(quadShiftX + w), -(quadShiftY + w));
pathForTurn.rQuadTo(-(quadShiftX + w), 0, -(quadShiftX + w), (quadShiftY + w));
pathForTurn.rLineTo(-hpartArrowL, 0);
pathForTurn.rLineTo(harrowL / 2, harrowL / 2); // center
pathForTurn.rLineTo(harrowL / 2, -harrowL / 2);
pathForTurn.rLineTo(-hpartArrowL, 0);
pathForTurn.rQuadTo(0, -quadShiftX, quadShiftX, -quadShiftY);
pathForTurn.rQuadTo(quadShiftX, 0, quadShiftX, quadShiftY);
pathForTurn.rLineTo(0, h);
} else if (turnType != null && turnType.isRoundAbout()) {
float t = turnType.getTurnAngle();
if (t >= 170 && t < 220) {
t = 220;
} else if (t > 160 && t < 170) {
t = 160;
}
float sweepAngle = (t - 360) - 180;
if (sweepAngle < -360) {
sweepAngle += 360;
}
float r1 = 32f;
float r2 = 24f;
float angleToRot = 0.3f;
pathForTurn.moveTo(48, 48 + r1 + 8);
pathForTurn.lineTo(48, 48 + r1);
RectF r = new RectF(48 - r1, 48 - r1, 48 + r1, 48 + r1);
pathForTurn.arcTo(r, 90, sweepAngle);
float angleRad = (float) ((180 + sweepAngle) * Math.PI / 180f);
pathForTurn.lineTo(
48 + (r1 + 4) * FloatMath.sin(angleRad), 48 - (r1 + 4) * FloatMath.cos(angleRad));
pathForTurn.lineTo(
48 + (r1 + 6) * FloatMath.sin(angleRad + angleToRot / 2),
48 - (r1 + 6) * FloatMath.cos(angleRad + angleToRot / 2));
pathForTurn.lineTo(
48 + (r1 + 12) * FloatMath.sin(angleRad - angleToRot / 2),
48 - (r1 + 12) * FloatMath.cos(angleRad - angleToRot / 2));
pathForTurn.lineTo(
48 + (r1 + 6) * FloatMath.sin(angleRad - 3 * angleToRot / 2),
48 - (r1 + 6) * FloatMath.cos(angleRad - 3 * angleToRot / 2));
pathForTurn.lineTo(
48 + (r1 + 4) * FloatMath.sin(angleRad - angleToRot),
48 - (r1 + 4) * FloatMath.cos(angleRad - angleToRot));
pathForTurn.lineTo(
48 + r2 * FloatMath.sin(angleRad - angleToRot),
48 - r2 * FloatMath.cos(angleRad - angleToRot));
r.set(48 - r2, 48 - r2, 48 + r2, 48 + r2);
pathForTurn.arcTo(r, 360 + sweepAngle + 90, -sweepAngle);
pathForTurn.lineTo(40, 48 + r2);
pathForTurn.lineTo(40, 48 + r1 + 8);
pathForTurn.close();
}
pathForTurn.close();
if (transform != null) {
pathForTurn.transform(transform);
}
}