for(int j = 0; j < heapslength - i - 1; j++){
if(heaps[j]<heaps[j+1]){
int temp = heaps[j];
heaps[j] = heaps[j+1];
heaps[j+1] = temp;
}
}
}
}
private void getCut(int nodes[][],int y)// 將交點坐標x進棧
{
int sideNum = nodes.length;
int tx = 0;
for(int i = 0; i < sideNum-1; i++)
{
int x0 = nodes[0];
int y0 = nodes[1];
int x1 = nodes[i+1][0];
int y1 = nodes[i+1][1];
if(y0 == y1&&y0 == y){
push(x0);
push(x1);
continue;
}
if(checkForCut(y,nodes[1],nodes[i+1][1])){
tx = (x1 - x0) * (y - y0) / (y1 - y0) + x0;
push(tx);
}
}
if(nodes[0][1] == nodes[sideNum-1][1]&&nodes[0][1]==y){
push(nodes[0][0]);
push(nodes[sideNum-1][0]);
}else{
if(checkForCut(y,nodes[sideNum-1][1],nodes[0][1])){
tx = (nodes[0][0] - nodes[sideNum-1][0])*(y-nodes[sideNum-1][1])/(nodes[0][1] - nodes[sideNum-1][1])+nodes[sideNum-1][0];
push(tx);
}
}
sortHeaps();
}
private void fillPolygon(int nodes[][])
{
gb.setColor(0x00ff0000);
for(int i = 0; i < nHeight; i++){
getCut(nodes,i);
if(i == 100)
{
for(int j = 0;j < heaps.length; j++){
System.out.println(" "+heaps[j]);
}
}
int bx = 0;
if(heaps == null)
continue;
int j = 0;
while(heaps != null){
if((j%2)==0){
int ex = pop();
bx = ex;
}else{
int ex = pop();
gb.drawLine(bx,i,ex,i);
bx = ex;
}
j++;
}
}
}
private void drawPolygon(int nodes[][])
{
gb.setColor(0x0000ff00);
for(int i = 0; i < nodes.length-1; i++){
gb.drawLine(nodes[0],nodes[1],nodes[i+1][0],nodes[i+1][1]);
// gb.fillArc(nodes[0] - 10,nodes[1] - 10,20,20,0,360);
}
gb.drawLine(nodes[0][0],nodes[0][1], nodes[nodes.length-1][0], nodes[nodes.length-1][1]);
// gb.fillArc(nodes[nodes.length-1][0] - 10,nodes[nodes.length-1][1] -
// 10,20,20,0,360);
}
// 裁減,裁減後的圖放在theCutImg裡面
Image theCutImg;
private void cutGraphics(int x,int y,int w, int h)
{
Graphics tg;
try{
theCutImg = Image.createImage(w,h);
}catch(Exception e){System.out.println(e+" createImage");}
tg = theCutImg.getGraphics();
tg.drawImage(bufImg, -x, -y, 0);
}
public void run()
{
gb.setColor(0x00ffffff);
gb.fillRect(0,0,nWidth,nHeight);
fillPolygon(nodes);
System.out.println("done1");
drawPolygon(nodes);
System.out.println("done2");
repaint();
}
private void pause(long t)
{
try{Thread.sleep(t);}catch(Exception e){}
}
public void keyPressed(int keyCode)
{
}
}