public BufferedImage filter(BufferedImage src, BufferedImage dst) {
if (dst == null) dst = createCompatibleDestImage(src, null);
int width = src.getWidth();
int height = src.getHeight();
int numScratches = (int) (density * width * height / 100);
ArrayList<Line2D> lines = new ArrayList<Line2D>();
{
float l = length * width;
Random random = new Random(seed);
Graphics2D g = dst.createGraphics();
g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
g.setColor(new Color(color));
g.setStroke(new BasicStroke(this.width));
for (int i = 0; i < numScratches; i++) {
float x = width * random.nextFloat();
float y = height * random.nextFloat();
float a = angle + ImageMath.TWO_PI * (angleVariation * (random.nextFloat() - 0.5f));
float s = (float) Math.sin(a) * l;
float c = (float) Math.cos(a) * l;
float x1 = x - c;
float y1 = y - s;
float x2 = x + c;
float y2 = y + s;
g.drawLine((int) x1, (int) y1, (int) x2, (int) y2);
lines.add(new Line2D.Float(x1, y1, x2, y2));
}
g.dispose();
}
if (false) {
// int[] inPixels = getRGB( src, 0, 0, width, height, null );
int[] inPixels = new int[width * height];
int index = 0;
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
float sx = x, sy = y;
for (int i = 0; i < numScratches; i++) {
Line2D.Float l = (Line2D.Float) lines.get(i);
float dot = (l.x2 - l.x1) * (sx - l.x1) + (l.y2 - l.y1) * (sy - l.y1);
if (dot > 0) inPixels[index] |= (1 << i);
}
index++;
}
}
Colormap colormap = new LinearColormap();
index = 0;
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
float f = (float) (inPixels[index] & 0x7fffffff) / 0x7fffffff;
inPixels[index] = colormap.getColor(f);
index++;
}
}
setRGB(dst, 0, 0, width, height, inPixels);
}
return dst;
}
// ç»å®èå´è·å¾éæºé¢è²
Color getRandColor(int fc, int bc) {
Random random = new Random();
if (fc > 255) fc = 255;
if (bc > 255) bc = 255;
int r = fc + random.nextInt(bc - fc);
int g = fc + random.nextInt(bc - fc);
int b = fc + random.nextInt(bc - fc);
return new Color(r, g, b);
}
public static int randomColor(Random om) {
return pack(
om.nextInt(256),
om.nextInt(256),
om.nextInt(256),
// 255);
// 253 + Rand.om.nextInt(3));
// 200 + Rand.om.nextInt(53));
randAlpha(om));
}
public void setDimensions(int width, int height) {
this.width = width;
this.height = height;
centreX = width / 2;
centreY = height / 2;
super.setDimensions(width, height);
randomNumbers.setSeed(seed);
rayLengths = new float[rays];
for (int i = 0; i < rays; i++)
rayLengths[i] = radius + randomness / 100.0f * radius * (float) randomNumbers.nextGaussian();
}
public void setRandom(Random random)
/* Sets all the scalars in 'this' to random values uniformly distributed
* over (0.0, 1.0) using the pseudo-random generator 'random'. */
{
// setZero();
for (int k = 0; k < size; ++k) f[k] = random.nextFloat();
}
public static int randAlpha(Random om) {
switch (om.nextInt(5)) {
case 0:
return 253;
case 1:
return 254;
default:
return 255;
}
}
private static void bufSizeTest() throws Exception {
int w, h, i, subsamp;
byte[] srcBuf, jpegBuf;
TJCompressor tjc = null;
Random r = new Random();
try {
tjc = new TJCompressor();
System.out.println("Buffer size regression test");
for (subsamp = 0; subsamp < TJ.NUMSAMP; subsamp++) {
for (w = 1; w < 48; w++) {
int maxh = (w == 1) ? 2048 : 48;
for (h = 1; h < maxh; h++) {
if (h % 100 == 0) System.out.format("%04d x %04d\b\b\b\b\b\b\b\b\b\b\b", w, h);
srcBuf = new byte[w * h * 4];
jpegBuf = new byte[TJ.bufSize(w, h, subsamp)];
for (i = 0; i < w * h * 4; i++) {
srcBuf[i] = (byte) (r.nextInt(2) * 255);
}
tjc.setSourceImage(srcBuf, w, 0, h, TJ.PF_BGRX);
tjc.setSubsamp(subsamp);
tjc.setJPEGQuality(100);
tjc.compress(jpegBuf, 0);
srcBuf = new byte[h * w * 4];
jpegBuf = new byte[TJ.bufSize(h, w, subsamp)];
for (i = 0; i < h * w * 4; i++) {
srcBuf[i] = (byte) (r.nextInt(2) * 255);
}
tjc.setSourceImage(srcBuf, h, 0, w, TJ.PF_BGRX);
tjc.compress(jpegBuf, 0);
}
}
}
System.out.println("Done. ");
} catch (Exception e) {
if (tjc != null) tjc.close();
throw e;
}
if (tjc != null) tjc.close();
}
public ScalarImage(int width, int height, Random random)
/* Constructs a new ScalarImage = < width, height, zero-buffer > */
{
this.width = width;
this.height = height;
size = width * height;
f = new float[size];
offset = new int[height];
for (int j = 0; j < height; ++j) offset[j] = width * j;
for (int k = 0; k < size; ++k) f[k] = random.nextFloat();
}
/*======== public void drawPolygons() ==========
Inputs: EdgeMatrix pm
Color c
Returns:
Go through the point matrix as if it were a polygon matrix
Call drawline in batches of 3s to create triangles.
04/16/12 22:05:02
jdyrlandweaver
====================*/
public void drawPolygons(EdgeMatrix pm, Color c) {
Random rndm = new Random();
Color rndmColor;
float r, g, b;
if (pm.getLastCol() < 3) return;
for (int i = 0; i < pm.getLastCol() - 2; i += 3) {
if (pm.calculateDot(i) > 0) {
r = rndm.nextFloat();
g = rndm.nextFloat();
b = rndm.nextFloat();
rndmColor = new Color(r, g, b);
scanLine(pm, i, rndmColor);
}
}
}
public void initRandom(int[] values) {
Random r = new Random();
for (int i = 0; i < getWidth(); i++) {
set(i, 0, values[r.nextInt(values.length)]);
}
}
public Pickup(int fW, int fH) {
type = "heart";
x = r.nextInt(fW - 40) + 40;
y = r.nextInt(fH - 40) + 40;
position = new Point2D.Double(x, y);
} // end constructor
public void _jspService(HttpServletRequest request, HttpServletResponse response)
throws java.io.IOException, ServletException {
PageContext pageContext = null;
HttpSession session = null;
ServletContext application = null;
ServletConfig config = null;
JspWriter out = null;
Object page = this;
JspWriter _jspx_out = null;
PageContext _jspx_page_context = null;
try {
response.setContentType("image/jpeg");
pageContext =
_jspxFactory.getPageContext(
this, request, response, "/myhtml/errorpage/erroe.jsp", true, 8192, true);
_jspx_page_context = pageContext;
application = pageContext.getServletContext();
config = pageContext.getServletConfig();
session = pageContext.getSession();
out = pageContext.getOut();
_jspx_out = out;
out.write("\r\n");
out.write("\r\n");
out.write('\r');
out.write('\n');
// 设置页é¢ä¸ç¼å
response.setHeader("Pragma", "No-cache");
response.setHeader("Cache-Control", "no-cache");
response.setDateHeader("Expires", 0);
// å¨å
åä¸å建å¾è±¡
int width = 60, height = 20;
BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
// è·åå¾å½¢ä¸ä¸æ
Graphics g = image.getGraphics();
// çæéæºç±»
Random random = new Random();
// 设å®èæ¯è²
g.setColor(getRandColor(200, 250));
g.fillRect(0, 0, width, height);
// 设å®åä½
g.setFont(new Font("Times New Roman", Font.PLAIN, 18));
// ç»è¾¹æ¡
// g.setColor(new Color());
// g.drawRect(0,0,width-1,height-1);
// éæºäº§ç155æ¡å¹²æ°çº¿ï¼ä½¿å¾è±¡ä¸ç认è¯ç ä¸æ被å
¶å®ç¨åºæ¢æµå°
g.setColor(getRandColor(160, 200));
for (int i = 0; i < 155; i++) {
int x = random.nextInt(width);
int y = random.nextInt(height);
int xl = random.nextInt(12);
int yl = random.nextInt(12);
g.drawLine(x, y, x + xl, y + yl);
}
// åéæºäº§çç认è¯ç (4ä½æ°å)
String sRand = "";
for (int i = 0; i < 4; i++) {
String rand = String.valueOf(random.nextInt(10));
sRand += rand;
// å°è®¤è¯ç æ¾ç¤ºå°å¾è±¡ä¸
g.setColor(
new Color(
20 + random.nextInt(110), 20 + random.nextInt(110), 20 + random.nextInt(110)));
// è°ç¨å½æ°åºæ¥çé¢è²ç¸åï¼å¯è½æ¯å
// 为ç§å太æ¥è¿ï¼æ以åªè½ç´æ¥çæ
g.drawString(rand, 13 * i + 6, 16);
}
// å°è®¤è¯ç åå
¥SESSION
session.setAttribute("rand", sRand);
// å¾è±¡çæ
g.dispose();
// è¾åºå¾è±¡å°é¡µé¢
ImageIO.write(image, "JPEG", response.getOutputStream());
out.clear();
out = pageContext.pushBody();
} catch (Throwable t) {
if (!(t instanceof SkipPageException)) {
out = _jspx_out;
if (out != null && out.getBufferSize() != 0)
try {
out.clearBuffer();
} catch (java.io.IOException e) {
}
if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);
else log(t.getMessage(), t);
}
} finally {
_jspxFactory.releasePageContext(_jspx_page_context);
}
}
