double getTileNumberX(float zoom, double longitude) {
if (longitude == 180.) {
return getPowZoom(zoom) - 1;
}
longitude = checkLongitude(longitude);
return (longitude + 180.) / 360. * getPowZoom(zoom);
}
double getTileNumberY(float zoom, double latitude) {
latitude = checkLatitude(latitude);
double eval = log(tan(toRadians(latitude)) + 1 / cos(toRadians(latitude)));
if (isinf(eval) || isnan(eval)) {
latitude = latitude < 0 ? -89.9 : 89.9;
eval = log(tan(toRadians(latitude)) + 1 / cos(toRadians(latitude)));
}
double result = (1 - eval / M_PI) / 2 * getPowZoom(zoom);
return result;
}
double getLongitudeFromTile(float zoom, double x) {
return x / getPowZoom(zoom) * 360.0 - 180.0;
}
double getLatitudeFromTile(float zoom, double y) {
int sign = y < 0 ? -1 : 1;
double result = atan(sign*sinh(M_PI * (1 - 2 * y / getPowZoom(zoom)))) * 180. / M_PI;
return result;
}
void runSimpleRendering( string renderingFileName, string resourceDir, RenderingInfo* info) {
SkColor defaultMapColor = SK_ColorLTGRAY;
if (info->width > 10000 || info->height > 10000) {
osmand_log_print(LOG_ERROR, "We don't rendering images more than 10000x10000 ");
return;
}
osmand_log_print(LOG_INFO, "Rendering info bounds(%d, %d, %d, %d) zoom(%d), width/height(%d/%d) tilewidth/tileheight(%d/%d) fileName(%s)",
info->left, info->top, info->right, info->bottom, info->zoom, info->width, info->height, info->tileWX, info->tileHY, info->tileFileName.c_str());
RenderingRulesStorage* st = new RenderingRulesStorage(renderingFileName.c_str());
st->parseRulesFromXmlInputStream(renderingFileName.c_str(), NULL);
RenderingRuleSearchRequest* searchRequest = new RenderingRuleSearchRequest(st);
ResultPublisher* publisher = new ResultPublisher();
SearchQuery q(floor(info->left), floor(info->right), ceil(info->top), ceil(info->bottom), searchRequest, publisher);
q.zoom = info->zoom;
ResultPublisher* res = searchObjectsForRendering(&q, true, "Nothing found");
osmand_log_print(LOG_INFO, "Found %d objects", res->result.size());
SkBitmap* bitmap = new SkBitmap();
bitmap->setConfig(SkBitmap::kRGB_565_Config, info->width, info->height);
size_t bitmapDataSize = bitmap->getSize();
void* bitmapData = malloc(bitmapDataSize);
bitmap->setPixels(bitmapData);
osmand_log_print(LOG_INFO, "Initializing rendering style and rendering context");
ElapsedTimer initObjects;
initObjects.start();
RenderingContext rc;
rc.setDefaultIconsDir(resourceDir);
searchRequest->clearState();
searchRequest->setIntFilter(st->PROPS.R_MINZOOM, info->zoom);
if (searchRequest->searchRenderingAttribute(A_DEFAULT_COLOR)) {
defaultMapColor = searchRequest->getIntPropertyValue(searchRequest->props()->R_ATTR_COLOR_VALUE);
}
searchRequest->clearState();
searchRequest->setIntFilter(st->PROPS.R_MINZOOM, info->zoom);
if (searchRequest->searchRenderingAttribute(A_SHADOW_RENDERING)) {
rc.setShadowRenderingMode(searchRequest->getIntPropertyValue(searchRequest->props()->R_ATTR_INT_VALUE));
//rc.setShadowRenderingColor(searchRequest->getIntPropertyValue(searchRequest->props()->R_SHADOW_COLOR));
}
rc.setLocation(
((double)info->left)/getPowZoom(31-info->zoom),
((double)info->top)/getPowZoom(31-info->zoom)
);
rc.setDimension(info->width, info->height);
rc.setZoom(info->zoom);
rc.setRotate(0);
rc.setDensityScale(1);
osmand_log_print(LOG_INFO, "Rendering image");
initObjects.pause();
SkCanvas* canvas = new SkCanvas(*bitmap);
canvas->drawColor(defaultMapColor);
doRendering(res->result, canvas, searchRequest, &rc);
osmand_log_print(LOG_INFO, "End Rendering image");
osmand_log_print(LOG_INFO, "Native ok (init %d, rendering %d) ", initObjects.getElapsedTime(),
rc.nativeOperations.getElapsedTime());
SkImageEncoder* enc = SkImageEncoder::Create(SkImageEncoder::kPNG_Type);
if (enc != NULL && !enc->encodeFile(info->tileFileName.c_str(), *bitmap, 100)) {
osmand_log_print(LOG_ERROR, "FAIL to save tile to %s", info->tileFileName.c_str());
} else {
osmand_log_print(LOG_INFO, "Tile successfully saved to %s", info->tileFileName.c_str());
}
delete enc;
delete publisher;
delete searchRequest;
delete st;
delete canvas;
delete bitmap;
free(bitmapData);
return;
}