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-rw-r--r--libs/hwui/utils/VectorDrawableUtils.cpp610
1 files changed, 224 insertions, 386 deletions
diff --git a/libs/hwui/utils/VectorDrawableUtils.cpp b/libs/hwui/utils/VectorDrawableUtils.cpp
index 6f0c96db4b1e..6b8f3154dd36 100644
--- a/libs/hwui/utils/VectorDrawableUtils.cpp
+++ b/libs/hwui/utils/VectorDrawableUtils.cpp
@@ -32,8 +32,8 @@ public:
float ctrlPointY = 0;
float currentSegmentStartX = 0;
float currentSegmentStartY = 0;
- void addCommand(SkPath* outPath, char previousCmd,
- char cmd, const std::vector<float>* points, size_t start, size_t end);
+ void addCommand(SkPath* outPath, char previousCmd, char cmd, const std::vector<float>* points,
+ size_t start, size_t end);
};
bool VectorDrawableUtils::canMorph(const PathData& morphFrom, const PathData& morphTo) {
@@ -42,8 +42,8 @@ bool VectorDrawableUtils::canMorph(const PathData& morphFrom, const PathData& mo
}
for (unsigned int i = 0; i < morphFrom.verbs.size(); i++) {
- if (morphFrom.verbs[i] != morphTo.verbs[i]
- || morphFrom.verbSizes[i] != morphTo.verbSizes[i]) {
+ if (morphFrom.verbs[i] != morphTo.verbs[i] ||
+ morphFrom.verbSizes[i] != morphTo.verbSizes[i]) {
return false;
}
}
@@ -51,7 +51,7 @@ bool VectorDrawableUtils::canMorph(const PathData& morphFrom, const PathData& mo
}
bool VectorDrawableUtils::interpolatePathData(PathData* outData, const PathData& morphFrom,
- const PathData& morphTo, float fraction) {
+ const PathData& morphTo, float fraction) {
if (!canMorph(morphFrom, morphTo)) {
return false;
}
@@ -59,9 +59,9 @@ bool VectorDrawableUtils::interpolatePathData(PathData* outData, const PathData&
return true;
}
- /**
- * Convert an array of PathVerb to Path.
- */
+/**
+* Convert an array of PathVerb to Path.
+*/
void VectorDrawableUtils::verbsToPath(SkPath* outPath, const PathData& data) {
PathResolver resolver;
char previousCommand = 'm';
@@ -70,7 +70,7 @@ void VectorDrawableUtils::verbsToPath(SkPath* outPath, const PathData& data) {
for (unsigned int i = 0; i < data.verbs.size(); i++) {
size_t verbSize = data.verbSizes[i];
resolver.addCommand(outPath, previousCommand, data.verbs[i], &data.points, start,
- start + verbSize);
+ start + verbSize);
previousCommand = data.verbs[i];
start += verbSize;
}
@@ -85,8 +85,8 @@ void VectorDrawableUtils::verbsToPath(SkPath* outPath, const PathData& data) {
* @param nodeTo The end value as a PathVerb
* @param fraction The fraction to interpolate.
*/
-void VectorDrawableUtils::interpolatePaths(PathData* outData,
- const PathData& from, const PathData& to, float fraction) {
+void VectorDrawableUtils::interpolatePaths(PathData* outData, const PathData& from,
+ const PathData& to, float fraction) {
outData->points.resize(from.points.size());
outData->verbSizes = from.verbSizes;
outData->verbs = from.verbs;
@@ -96,396 +96,234 @@ void VectorDrawableUtils::interpolatePaths(PathData* outData,
}
}
-/**
- * Converts an arc to cubic Bezier segments and records them in p.
- *
- * @param p The target for the cubic Bezier segments
- * @param cx The x coordinate center of the ellipse
- * @param cy The y coordinate center of the ellipse
- * @param a The radius of the ellipse in the horizontal direction
- * @param b The radius of the ellipse in the vertical direction
- * @param e1x E(eta1) x coordinate of the starting point of the arc
- * @param e1y E(eta2) y coordinate of the starting point of the arc
- * @param theta The angle that the ellipse bounding rectangle makes with horizontal plane
- * @param start The start angle of the arc on the ellipse
- * @param sweep The angle (positive or negative) of the sweep of the arc on the ellipse
- */
-static void arcToBezier(SkPath* p,
- double cx,
- double cy,
- double a,
- double b,
- double e1x,
- double e1y,
- double theta,
- double start,
- double sweep) {
- // Taken from equations at: http://spaceroots.org/documents/ellipse/node8.html
- // and http://www.spaceroots.org/documents/ellipse/node22.html
-
- // Maximum of 45 degrees per cubic Bezier segment
- int numSegments = ceil(fabs(sweep * 4 / M_PI));
-
- double eta1 = start;
- double cosTheta = cos(theta);
- double sinTheta = sin(theta);
- double cosEta1 = cos(eta1);
- double sinEta1 = 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 = sin(eta2);
- double cosEta2 = 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 = tan((eta2 - eta1) / 2);
- double alpha =
- sin(eta2 - eta1) * (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;
-
- p->cubicTo((float) q1x,
- (float) q1y,
- (float) q2x,
- (float) q2y,
- (float) e2x,
- (float) e2y);
- eta1 = eta2;
- e1x = e2x;
- e1y = e2y;
- ep1x = ep2x;
- ep1y = ep2y;
- }
-}
-
-inline double toRadians(float theta) { return theta * M_PI / 180;}
-
-static void drawArc(SkPath* p,
- float x0,
- float y0,
- float x1,
- float y1,
- float a,
- float b,
- float theta,
- bool isMoreThanHalf,
- bool isPositiveArc) {
-
- /* Convert rotation angle from degrees to radians */
- double thetaD = toRadians(theta);
- /* Pre-compute rotation matrix entries */
- double cosTheta = cos(thetaD);
- double sinTheta = sin(thetaD);
- /* Transform (x0, y0) and (x1, y1) into unit space */
- /* using (inverse) rotation, followed by (inverse) scale */
- double x0p = (x0 * cosTheta + y0 * sinTheta) / a;
- double y0p = (-x0 * sinTheta + y0 * cosTheta) / b;
- double x1p = (x1 * cosTheta + y1 * sinTheta) / a;
- double y1p = (-x1 * sinTheta + y1 * cosTheta) / b;
-
- /* Compute differences and averages */
- double dx = x0p - x1p;
- double dy = y0p - y1p;
- double xm = (x0p + x1p) / 2;
- double ym = (y0p + y1p) / 2;
- /* Solve for intersecting unit circles */
- double dsq = dx * dx + dy * dy;
- if (dsq == 0.0) {
- VECTOR_DRAWABLE_LOGD("Points are coincident");
- return; /* Points are coincident */
- }
- double disc = 1.0 / dsq - 1.0 / 4.0;
- if (disc < 0.0) {
- VECTOR_DRAWABLE_LOGD("Points are too far apart %f", dsq);
- float adjust = (float) (sqrt(dsq) / 1.99999);
- drawArc(p, x0, y0, x1, y1, a * adjust,
- b * adjust, theta, isMoreThanHalf, isPositiveArc);
- return; /* Points are too far apart */
- }
- double s = sqrt(disc);
- double sdx = s * dx;
- double sdy = s * dy;
- double cx;
- double cy;
- if (isMoreThanHalf == isPositiveArc) {
- cx = xm - sdy;
- cy = ym + sdx;
- } else {
- cx = xm + sdy;
- cy = ym - sdx;
- }
-
- double eta0 = atan2((y0p - cy), (x0p - cx));
-
- double eta1 = atan2((y1p - cy), (x1p - cx));
-
- double sweep = (eta1 - eta0);
- if (isPositiveArc != (sweep >= 0)) {
- if (sweep > 0) {
- sweep -= 2 * M_PI;
- } else {
- sweep += 2 * M_PI;
- }
- }
-
- cx *= a;
- cy *= b;
- double tcx = cx;
- cx = cx * cosTheta - cy * sinTheta;
- cy = tcx * sinTheta + cy * cosTheta;
-
- arcToBezier(p, cx, cy, a, b, x0, y0, thetaD, eta0, sweep);
-}
-
-
-
// Use the given verb, and points in the range [start, end) to insert a command into the SkPath.
-void PathResolver::addCommand(SkPath* outPath, char previousCmd,
- char cmd, const std::vector<float>* points, size_t start, size_t end) {
-
+void PathResolver::addCommand(SkPath* outPath, char previousCmd, char cmd,
+ const std::vector<float>* points, size_t start, size_t end) {
int incr = 2;
float reflectiveCtrlPointX;
float reflectiveCtrlPointY;
switch (cmd) {
- case 'z':
- case 'Z':
- outPath->close();
- // Path is closed here, but we need to move the pen to the
- // closed position. So we cache the segment's starting position,
- // and restore it here.
- currentX = currentSegmentStartX;
- currentY = currentSegmentStartY;
- ctrlPointX = currentSegmentStartX;
- ctrlPointY = currentSegmentStartY;
- outPath->moveTo(currentX, currentY);
- break;
- case 'm':
- case 'M':
- case 'l':
- case 'L':
- case 't':
- case 'T':
- incr = 2;
- break;
- case 'h':
- case 'H':
- case 'v':
- case 'V':
- incr = 1;
- break;
- case 'c':
- case 'C':
- incr = 6;
- break;
- case 's':
- case 'S':
- case 'q':
- case 'Q':
- incr = 4;
- break;
- case 'a':
- case 'A':
- incr = 7;
- break;
- }
-
- for (unsigned int k = start; k < end; k += incr) {
- switch (cmd) {
- case 'm': // moveto - Start a new sub-path (relative)
- currentX += points->at(k + 0);
- currentY += points->at(k + 1);
- if (k > start) {
- // According to the spec, if a moveto is followed by multiple
- // pairs of coordinates, the subsequent pairs are treated as
- // implicit lineto commands.
- outPath->rLineTo(points->at(k + 0), points->at(k + 1));
- } else {
- outPath->rMoveTo(points->at(k + 0), points->at(k + 1));
- currentSegmentStartX = currentX;
- currentSegmentStartY = currentY;
- }
+ case 'z':
+ case 'Z':
+ outPath->close();
+ // Path is closed here, but we need to move the pen to the
+ // closed position. So we cache the segment's starting position,
+ // and restore it here.
+ currentX = currentSegmentStartX;
+ currentY = currentSegmentStartY;
+ ctrlPointX = currentSegmentStartX;
+ ctrlPointY = currentSegmentStartY;
+ outPath->moveTo(currentX, currentY);
break;
- case 'M': // moveto - Start a new sub-path
- currentX = points->at(k + 0);
- currentY = points->at(k + 1);
- if (k > start) {
- // According to the spec, if a moveto is followed by multiple
- // pairs of coordinates, the subsequent pairs are treated as
- // implicit lineto commands.
- outPath->lineTo(points->at(k + 0), points->at(k + 1));
- } else {
- outPath->moveTo(points->at(k + 0), points->at(k + 1));
- currentSegmentStartX = currentX;
- currentSegmentStartY = currentY;
- }
- break;
- case 'l': // lineto - Draw a line from the current point (relative)
- outPath->rLineTo(points->at(k + 0), points->at(k + 1));
- currentX += points->at(k + 0);
- currentY += points->at(k + 1);
+ case 'm':
+ case 'M':
+ case 'l':
+ case 'L':
+ case 't':
+ case 'T':
+ incr = 2;
break;
- case 'L': // lineto - Draw a line from the current point
- outPath->lineTo(points->at(k + 0), points->at(k + 1));
- currentX = points->at(k + 0);
- currentY = points->at(k + 1);
+ case 'h':
+ case 'H':
+ case 'v':
+ case 'V':
+ incr = 1;
break;
- case 'h': // horizontal lineto - Draws a horizontal line (relative)
- outPath->rLineTo(points->at(k + 0), 0);
- currentX += points->at(k + 0);
+ case 'c':
+ case 'C':
+ incr = 6;
break;
- case 'H': // horizontal lineto - Draws a horizontal line
- outPath->lineTo(points->at(k + 0), currentY);
- currentX = points->at(k + 0);
+ case 's':
+ case 'S':
+ case 'q':
+ case 'Q':
+ incr = 4;
break;
- case 'v': // vertical lineto - Draws a vertical line from the current point (r)
- outPath->rLineTo(0, points->at(k + 0));
- currentY += points->at(k + 0);
+ case 'a':
+ case 'A':
+ incr = 7;
break;
- case 'V': // vertical lineto - Draws a vertical line from the current point
- outPath->lineTo(currentX, points->at(k + 0));
- currentY = points->at(k + 0);
- break;
- case 'c': // curveto - Draws a cubic Bézier curve (relative)
- outPath->rCubicTo(points->at(k + 0), points->at(k + 1), points->at(k + 2), points->at(k + 3),
- points->at(k + 4), points->at(k + 5));
-
- ctrlPointX = currentX + points->at(k + 2);
- ctrlPointY = currentY + points->at(k + 3);
- currentX += points->at(k + 4);
- currentY += points->at(k + 5);
+ }
- break;
- case 'C': // curveto - Draws a cubic Bézier curve
- outPath->cubicTo(points->at(k + 0), points->at(k + 1), points->at(k + 2), points->at(k + 3),
- points->at(k + 4), points->at(k + 5));
- currentX = points->at(k + 4);
- currentY = points->at(k + 5);
- ctrlPointX = points->at(k + 2);
- ctrlPointY = points->at(k + 3);
- break;
- case 's': // smooth curveto - Draws a cubic Bézier curve (reflective cp)
- reflectiveCtrlPointX = 0;
- reflectiveCtrlPointY = 0;
- if (previousCmd == 'c' || previousCmd == 's'
- || previousCmd == 'C' || previousCmd == 'S') {
- reflectiveCtrlPointX = currentX - ctrlPointX;
- reflectiveCtrlPointY = currentY - ctrlPointY;
- }
- outPath->rCubicTo(reflectiveCtrlPointX, reflectiveCtrlPointY,
- points->at(k + 0), points->at(k + 1),
- points->at(k + 2), points->at(k + 3));
- ctrlPointX = currentX + points->at(k + 0);
- ctrlPointY = currentY + points->at(k + 1);
- currentX += points->at(k + 2);
- currentY += points->at(k + 3);
- break;
- case 'S': // shorthand/smooth curveto Draws a cubic Bézier curve(reflective cp)
- reflectiveCtrlPointX = currentX;
- reflectiveCtrlPointY = currentY;
- if (previousCmd == 'c' || previousCmd == 's'
- || previousCmd == 'C' || previousCmd == 'S') {
- reflectiveCtrlPointX = 2 * currentX - ctrlPointX;
- reflectiveCtrlPointY = 2 * currentY - ctrlPointY;
- }
- outPath->cubicTo(reflectiveCtrlPointX, reflectiveCtrlPointY,
- points->at(k + 0), points->at(k + 1), points->at(k + 2), points->at(k + 3));
- ctrlPointX = points->at(k + 0);
- ctrlPointY = points->at(k + 1);
- currentX = points->at(k + 2);
- currentY = points->at(k + 3);
- break;
- case 'q': // Draws a quadratic Bézier (relative)
- outPath->rQuadTo(points->at(k + 0), points->at(k + 1), points->at(k + 2), points->at(k + 3));
- ctrlPointX = currentX + points->at(k + 0);
- ctrlPointY = currentY + points->at(k + 1);
- currentX += points->at(k + 2);
- currentY += points->at(k + 3);
- break;
- case 'Q': // Draws a quadratic Bézier
- outPath->quadTo(points->at(k + 0), points->at(k + 1), points->at(k + 2), points->at(k + 3));
- ctrlPointX = points->at(k + 0);
- ctrlPointY = points->at(k + 1);
- currentX = points->at(k + 2);
- currentY = points->at(k + 3);
- break;
- case 't': // Draws a quadratic Bézier curve(reflective control point)(relative)
- reflectiveCtrlPointX = 0;
- reflectiveCtrlPointY = 0;
- if (previousCmd == 'q' || previousCmd == 't'
- || previousCmd == 'Q' || previousCmd == 'T') {
- reflectiveCtrlPointX = currentX - ctrlPointX;
- reflectiveCtrlPointY = currentY - ctrlPointY;
- }
- outPath->rQuadTo(reflectiveCtrlPointX, reflectiveCtrlPointY,
- points->at(k + 0), points->at(k + 1));
- ctrlPointX = currentX + reflectiveCtrlPointX;
- ctrlPointY = currentY + reflectiveCtrlPointY;
- currentX += points->at(k + 0);
- currentY += points->at(k + 1);
- break;
- case 'T': // Draws a quadratic Bézier curve (reflective control point)
- reflectiveCtrlPointX = currentX;
- reflectiveCtrlPointY = currentY;
- if (previousCmd == 'q' || previousCmd == 't'
- || previousCmd == 'Q' || previousCmd == 'T') {
- reflectiveCtrlPointX = 2 * currentX - ctrlPointX;
- reflectiveCtrlPointY = 2 * currentY - ctrlPointY;
- }
- outPath->quadTo(reflectiveCtrlPointX, reflectiveCtrlPointY,
- points->at(k + 0), points->at(k + 1));
- ctrlPointX = reflectiveCtrlPointX;
- ctrlPointY = reflectiveCtrlPointY;
- currentX = points->at(k + 0);
- currentY = points->at(k + 1);
- break;
- case 'a': // Draws an elliptical arc
- // (rx ry x-axis-rotation large-arc-flag sweep-flag x y)
- drawArc(outPath,
- currentX,
- currentY,
- points->at(k + 5) + currentX,
- points->at(k + 6) + currentY,
- points->at(k + 0),
- points->at(k + 1),
- points->at(k + 2),
- points->at(k + 3) != 0,
- points->at(k + 4) != 0);
- currentX += points->at(k + 5);
- currentY += points->at(k + 6);
- ctrlPointX = currentX;
- ctrlPointY = currentY;
- break;
- case 'A': // Draws an elliptical arc
- drawArc(outPath,
- currentX,
- currentY,
- points->at(k + 5),
- points->at(k + 6),
- points->at(k + 0),
- points->at(k + 1),
- points->at(k + 2),
- points->at(k + 3) != 0,
- points->at(k + 4) != 0);
- currentX = points->at(k + 5);
- currentY = points->at(k + 6);
- ctrlPointX = currentX;
- ctrlPointY = currentY;
- break;
- default:
- LOG_ALWAYS_FATAL("Unsupported command: %c", cmd);
- break;
+ for (unsigned int k = start; k < end; k += incr) {
+ switch (cmd) {
+ case 'm': // moveto - Start a new sub-path (relative)
+ currentX += points->at(k + 0);
+ currentY += points->at(k + 1);
+ if (k > start) {
+ // According to the spec, if a moveto is followed by multiple
+ // pairs of coordinates, the subsequent pairs are treated as
+ // implicit lineto commands.
+ outPath->rLineTo(points->at(k + 0), points->at(k + 1));
+ } else {
+ outPath->rMoveTo(points->at(k + 0), points->at(k + 1));
+ currentSegmentStartX = currentX;
+ currentSegmentStartY = currentY;
+ }
+ break;
+ case 'M': // moveto - Start a new sub-path
+ currentX = points->at(k + 0);
+ currentY = points->at(k + 1);
+ if (k > start) {
+ // According to the spec, if a moveto is followed by multiple
+ // pairs of coordinates, the subsequent pairs are treated as
+ // implicit lineto commands.
+ outPath->lineTo(points->at(k + 0), points->at(k + 1));
+ } else {
+ outPath->moveTo(points->at(k + 0), points->at(k + 1));
+ currentSegmentStartX = currentX;
+ currentSegmentStartY = currentY;
+ }
+ break;
+ case 'l': // lineto - Draw a line from the current point (relative)
+ outPath->rLineTo(points->at(k + 0), points->at(k + 1));
+ currentX += points->at(k + 0);
+ currentY += points->at(k + 1);
+ break;
+ case 'L': // lineto - Draw a line from the current point
+ outPath->lineTo(points->at(k + 0), points->at(k + 1));
+ currentX = points->at(k + 0);
+ currentY = points->at(k + 1);
+ break;
+ case 'h': // horizontal lineto - Draws a horizontal line (relative)
+ outPath->rLineTo(points->at(k + 0), 0);
+ currentX += points->at(k + 0);
+ break;
+ case 'H': // horizontal lineto - Draws a horizontal line
+ outPath->lineTo(points->at(k + 0), currentY);
+ currentX = points->at(k + 0);
+ break;
+ case 'v': // vertical lineto - Draws a vertical line from the current point (r)
+ outPath->rLineTo(0, points->at(k + 0));
+ currentY += points->at(k + 0);
+ break;
+ case 'V': // vertical lineto - Draws a vertical line from the current point
+ outPath->lineTo(currentX, points->at(k + 0));
+ currentY = points->at(k + 0);
+ break;
+ case 'c': // curveto - Draws a cubic Bézier curve (relative)
+ outPath->rCubicTo(points->at(k + 0), points->at(k + 1), points->at(k + 2),
+ points->at(k + 3), points->at(k + 4), points->at(k + 5));
+
+ ctrlPointX = currentX + points->at(k + 2);
+ ctrlPointY = currentY + points->at(k + 3);
+ currentX += points->at(k + 4);
+ currentY += points->at(k + 5);
+
+ break;
+ case 'C': // curveto - Draws a cubic Bézier curve
+ outPath->cubicTo(points->at(k + 0), points->at(k + 1), points->at(k + 2),
+ points->at(k + 3), points->at(k + 4), points->at(k + 5));
+ currentX = points->at(k + 4);
+ currentY = points->at(k + 5);
+ ctrlPointX = points->at(k + 2);
+ ctrlPointY = points->at(k + 3);
+ break;
+ case 's': // smooth curveto - Draws a cubic Bézier curve (reflective cp)
+ reflectiveCtrlPointX = 0;
+ reflectiveCtrlPointY = 0;
+ if (previousCmd == 'c' || previousCmd == 's' || previousCmd == 'C' ||
+ previousCmd == 'S') {
+ reflectiveCtrlPointX = currentX - ctrlPointX;
+ reflectiveCtrlPointY = currentY - ctrlPointY;
+ }
+ outPath->rCubicTo(reflectiveCtrlPointX, reflectiveCtrlPointY, points->at(k + 0),
+ points->at(k + 1), points->at(k + 2), points->at(k + 3));
+ ctrlPointX = currentX + points->at(k + 0);
+ ctrlPointY = currentY + points->at(k + 1);
+ currentX += points->at(k + 2);
+ currentY += points->at(k + 3);
+ break;
+ case 'S': // shorthand/smooth curveto Draws a cubic Bézier curve(reflective cp)
+ reflectiveCtrlPointX = currentX;
+ reflectiveCtrlPointY = currentY;
+ if (previousCmd == 'c' || previousCmd == 's' || previousCmd == 'C' ||
+ previousCmd == 'S') {
+ reflectiveCtrlPointX = 2 * currentX - ctrlPointX;
+ reflectiveCtrlPointY = 2 * currentY - ctrlPointY;
+ }
+ outPath->cubicTo(reflectiveCtrlPointX, reflectiveCtrlPointY, points->at(k + 0),
+ points->at(k + 1), points->at(k + 2), points->at(k + 3));
+ ctrlPointX = points->at(k + 0);
+ ctrlPointY = points->at(k + 1);
+ currentX = points->at(k + 2);
+ currentY = points->at(k + 3);
+ break;
+ case 'q': // Draws a quadratic Bézier (relative)
+ outPath->rQuadTo(points->at(k + 0), points->at(k + 1), points->at(k + 2),
+ points->at(k + 3));
+ ctrlPointX = currentX + points->at(k + 0);
+ ctrlPointY = currentY + points->at(k + 1);
+ currentX += points->at(k + 2);
+ currentY += points->at(k + 3);
+ break;
+ case 'Q': // Draws a quadratic Bézier
+ outPath->quadTo(points->at(k + 0), points->at(k + 1), points->at(k + 2),
+ points->at(k + 3));
+ ctrlPointX = points->at(k + 0);
+ ctrlPointY = points->at(k + 1);
+ currentX = points->at(k + 2);
+ currentY = points->at(k + 3);
+ break;
+ case 't': // Draws a quadratic Bézier curve(reflective control point)(relative)
+ reflectiveCtrlPointX = 0;
+ reflectiveCtrlPointY = 0;
+ if (previousCmd == 'q' || previousCmd == 't' || previousCmd == 'Q' ||
+ previousCmd == 'T') {
+ reflectiveCtrlPointX = currentX - ctrlPointX;
+ reflectiveCtrlPointY = currentY - ctrlPointY;
+ }
+ outPath->rQuadTo(reflectiveCtrlPointX, reflectiveCtrlPointY, points->at(k + 0),
+ points->at(k + 1));
+ ctrlPointX = currentX + reflectiveCtrlPointX;
+ ctrlPointY = currentY + reflectiveCtrlPointY;
+ currentX += points->at(k + 0);
+ currentY += points->at(k + 1);
+ break;
+ case 'T': // Draws a quadratic Bézier curve (reflective control point)
+ reflectiveCtrlPointX = currentX;
+ reflectiveCtrlPointY = currentY;
+ if (previousCmd == 'q' || previousCmd == 't' || previousCmd == 'Q' ||
+ previousCmd == 'T') {
+ reflectiveCtrlPointX = 2 * currentX - ctrlPointX;
+ reflectiveCtrlPointY = 2 * currentY - ctrlPointY;
+ }
+ outPath->quadTo(reflectiveCtrlPointX, reflectiveCtrlPointY, points->at(k + 0),
+ points->at(k + 1));
+ ctrlPointX = reflectiveCtrlPointX;
+ ctrlPointY = reflectiveCtrlPointY;
+ currentX = points->at(k + 0);
+ currentY = points->at(k + 1);
+ break;
+ case 'a': // Draws an elliptical arc
+ // (rx ry x-axis-rotation large-arc-flag sweep-flag x y)
+ outPath->arcTo(points->at(k + 0), points->at(k + 1), points->at(k + 2),
+ (SkPath::ArcSize) (points->at(k + 3) != 0),
+ (SkPath::Direction) (points->at(k + 4) == 0),
+ points->at(k + 5) + currentX, points->at(k + 6) + currentY);
+ currentX += points->at(k + 5);
+ currentY += points->at(k + 6);
+ ctrlPointX = currentX;
+ ctrlPointY = currentY;
+ break;
+ case 'A': // Draws an elliptical arc
+ outPath->arcTo(points->at(k + 0), points->at(k + 1), points->at(k + 2),
+ (SkPath::ArcSize) (points->at(k + 3) != 0),
+ (SkPath::Direction) (points->at(k + 4) == 0),
+ points->at(k + 5), points->at(k + 6));
+ currentX = points->at(k + 5);
+ currentY = points->at(k + 6);
+ ctrlPointX = currentX;
+ ctrlPointY = currentY;
+ break;
+ default:
+ LOG_ALWAYS_FATAL("Unsupported command: %c", cmd);
+ break;
}
previousCmd = cmd;
}
}
-} // namespace uirenderer
-} // namespace android
+} // namespace uirenderer
+} // namespace android
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-03 10:39:35 +0000