// Y方向上的分割
void splitRoadByBlockY() {
List<RoadNew> spiltRoadList = new ArrayList<RoadNew>();
for (RoadNew road : this.roadList) {
List<ShpPoint> points = new ArrayList<ShpPoint>(road.coordinate);
ShpPoint startPoint = points.get(0);
ShpPoint headerSplitPoint = null;
int startBlockNo_y = taskData.calcBlockNo(startPoint).iY;
int splitIndexFrom = 0;
int splitIndexTo = 0;
ShpPoint splitPoint = null;
for (int index = 1; index < points.size(); ) {
ShpPoint currentPoint = points.get(index);
int currentBlockNo_y = taskData.calcBlockNo(currentPoint).iY;
// 道路跨Y方向边界
if (currentBlockNo_y != startBlockNo_y) {
boolean ascY = (currentBlockNo_y > startBlockNo_y);
// 分割时y值
int blockPoint_y = (startBlockNo_y + (ascY ? 1 : 0)) * taskData.blockInfo.iBlockHight;
// 根据相对位置计算X值
long blockPoint_x = startPoint.x; // long 类型为了避免溢出发生
if (currentPoint.x != startPoint.x) {
blockPoint_x =
(long) (currentPoint.x - startPoint.x)
* (blockPoint_y - startPoint.y)
/ (currentPoint.y - startPoint.y)
+ startPoint.x;
}
// 切割位置
if (ascY) {
splitPoint = new ShpPoint((int) blockPoint_x, blockPoint_y - 1);
} else {
splitPoint = new ShpPoint((int) blockPoint_x, blockPoint_y);
}
splitIndexTo = index;
// 计算BlockNo
road.blockNo = taskData.calcBlockNo(splitPoint);
// 产生新的Block边界Node,插入点
RoadNew splitRoad =
createSplitRoad(
road,
splitIndexFrom,
splitIndexTo,
points,
headerSplitPoint,
splitPoint,
new ShpPoint((int) blockPoint_x, blockPoint_y));
splitIndexFrom = splitIndexTo;
if (ascY) {
headerSplitPoint = new ShpPoint((int) blockPoint_x, blockPoint_y);
} else {
headerSplitPoint = new ShpPoint((int) blockPoint_x, blockPoint_y - 1);
}
// 收集新道路
spiltRoadList.add(splitRoad);
startPoint = new ShpPoint((int) blockPoint_x, blockPoint_y);
;
startBlockNo_y = startBlockNo_y + (ascY ? 1 : -1);
} else {
startPoint = currentPoint;
index++;
}
}
// 原始道路（最后一段道路） 添加Block值
ShpPoint endPoint = points.get(points.size() - 1);
road.blockNo = taskData.calcBlockNo(endPoint);
if (headerSplitPoint != null) {
road.coordinate = new ArrayList<ShpPoint>(points.subList(splitIndexFrom, points.size()));
road.coordinate.add(0, headerSplitPoint);
}
}
// 添加新结果
this.roadList.addAll(spiltRoadList);
}
// X方向上的Block分割
void splitRoadByBlockX() {
List<RoadNew> spiltRoadList = new ArrayList<RoadNew>();
for (int i = 0; i < this.roadList.size(); i++) {
RoadNew road = this.roadList.get(i);
List<ShpPoint> points = new ArrayList<ShpPoint>(road.coordinate);
ShpPoint startPoint = points.get(0);
ShpPoint headerSplitPoint = null;
int startBlockNo_x = taskData.calcBlockNo(startPoint).iX;
int splitIndexFrom = 0;
int splitIndexTo = 0;
ShpPoint splitPoint = null;
for (int index = 1; index < points.size(); ) {
ShpPoint currentPoint = points.get(index);
int currentBlockNo_x = taskData.calcBlockNo(currentPoint).iX;
// 道路跨X方向边界
if (currentBlockNo_x != startBlockNo_x) {
boolean ascX = currentBlockNo_x > startBlockNo_x;
// 分割线x值
int blockPoint_x =
(startBlockNo_x + (ascX ? 1 : 0)) * taskData.blockInfo.iBlockWidth
+ DataManager.MAP_GEO_LOCATION_LONGITUDE_MIN;
// 根据相对位置计算Y值
long blockPoint_y = startPoint.y; // long 类型为了避免溢出发生
if (currentPoint.y != startPoint.y) {
blockPoint_y =
(long) (blockPoint_x - startPoint.x)
* (currentPoint.y - startPoint.y)
/ (currentPoint.x - startPoint.x)
+ startPoint.y;
}
// 切割点
if (ascX) {
splitPoint = new ShpPoint(blockPoint_x - 1, (int) blockPoint_y);
} else {
splitPoint = new ShpPoint(blockPoint_x, (int) blockPoint_y);
}
// 切割位置
splitIndexTo = index;
// 计算BlockNo
road.blockNo = taskData.calcBlockNo(splitPoint);
// 产生新的Block边界Node,插入点
RoadNew splitRoad =
createSplitRoad(
road,
splitIndexFrom,
splitIndexTo,
points,
headerSplitPoint,
splitPoint,
new ShpPoint(blockPoint_x, (int) blockPoint_y));
splitIndexFrom = splitIndexTo;
if (ascX) {
headerSplitPoint = new ShpPoint(blockPoint_x, (int) blockPoint_y);
} else {
headerSplitPoint = new ShpPoint(blockPoint_x - 1, (int) blockPoint_y);
}
// 收集新道路
spiltRoadList.add(splitRoad);
startPoint = new ShpPoint(blockPoint_x, (int) blockPoint_y);
;
startBlockNo_x = startBlockNo_x + (ascX ? 1 : -1);
} else {
startPoint = currentPoint;
index++;
}
}
// 原始道路（最后一段道路） 添加Block值
ShpPoint endPoint = points.get(points.size() - 1);
road.blockNo = taskData.calcBlockNo(endPoint);
if (headerSplitPoint != null) {
road.coordinate = new ArrayList<ShpPoint>(points.subList(splitIndexFrom, points.size()));
road.coordinate.add(0, headerSplitPoint);
}
}
// 添加新结果
this.roadList.addAll(spiltRoadList);
}