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Merge pull request #4399 from osmandapp/fix_ruler_algorithm

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Fix algorithm for calculating the line between location and touch point
This commit is contained in:
vshcherb 2017-09-04 12:07:14 +02:00 committed by GitHub
commit e082111712
1 changed files with 15 additions and 6 deletions
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13
OsmAnd/src/net/osmand/plus/views/RulerControlLayer.java
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@ -30,6 +30,7 @@ public class RulerControlLayer extends OsmandMapLayer {
private static final long DRAW_TIME = 2000;
private static final long DELAY_BEFORE_DRAW = 500;
private static final int TEXT_SIZE = 14;
private static final int MAX_ITERATIONS = 50;
private final MapActivity mapActivity;
private OsmandApplication app;
@ -272,12 +273,18 @@ public class RulerControlLayer extends OsmandMapLayer {
int currY = (int) tb.getPixYFromLatLon(currentLoc.getLatitude(), currentLoc.getLongitude());
int width = tb.getPixWidth();
int height = tb.getPixHeight();
boolean needDraw = true;
if (currX < 0 || currY < 0 || currX > width || currY > height) {
if ((currX < 0 && x == 0) || (currY < 0 && y == 0)
|| (currX > width && x == width) || (currY > height && y == height)) {
needDraw = false;
} else if (currX < 0 || currY < 0 || currX > width || currY > height) {
float xNew = (currX + x) / 2;
float yNew = (currY + y) / 2;
int count = 0;
while (true) {
while (count < MAX_ITERATIONS) {
count++;
if (xNew < 0 || yNew < 0 || xNew > width || yNew > height) {
currX = (int) xNew;
currY = (int) yNew;
@ -289,11 +296,13 @@ public class RulerControlLayer extends OsmandMapLayer {
}
}
if (needDraw) {
canvas.rotate(-tb.getRotate(), tb.getCenterPixelX(), tb.getCenterPixelY());
canvas.drawLine(currX, currY, x, y, lineAttrs.paint);
drawFingerTouchIcon(canvas, x, y, nightMode);
canvas.rotate(tb.getRotate(), tb.getCenterPixelX(), tb.getCenterPixelY());
}
}
private void updateData(RotatedTileBox tb, QuadPoint center) {
if (tb.getPixHeight() > 0 && tb.getPixWidth() > 0 && maxRadiusInDp > 0) {