/**
* Draw labels for picking.
*
* @param dc Current draw context.
* @param pickSupport the PickSupport instance to be used.
*/
protected void doPick(DrawContext dc, PickSupport pickSupport) {
GL gl = dc.getGL();
Angle heading = this.rotation;
double headingDegrees;
if (heading != null) headingDegrees = heading.degrees;
else headingDegrees = 0;
int x = this.screenPoint.x;
int y = this.screenPoint.y;
boolean matrixPushed = false;
try {
if (headingDegrees != 0) {
gl.glPushMatrix();
matrixPushed = true;
gl.glTranslated(x, y, 0);
gl.glRotated(headingDegrees, 0, 0, 1);
gl.glTranslated(-x, -y, 0);
}
for (int i = 0; i < this.lines.length; i++) {
Rectangle2D bounds = this.lineBounds[i];
double width = bounds.getWidth();
double height = bounds.getHeight();
x = this.screenPoint.x;
if (this.textAlign.equals(AVKey.CENTER)) x = x - (int) (width / 2.0);
else if (this.textAlign.equals(AVKey.RIGHT)) x = x - (int) width;
y -= this.lineHeight;
Color color = dc.getUniquePickColor();
int colorCode = color.getRGB();
PickedObject po = new PickedObject(colorCode, this.getPickedObject(), this.position, false);
pickSupport.addPickableObject(po);
// Draw line rectangle
gl.glColor3ub((byte) color.getRed(), (byte) color.getGreen(), (byte) color.getBlue());
try {
gl.glBegin(GL.GL_POLYGON);
gl.glVertex3d(x, y, 0);
gl.glVertex3d(x + width - 1, y, 0);
gl.glVertex3d(x + width - 1, y + height - 1, 0);
gl.glVertex3d(x, y + height - 1, 0);
gl.glVertex3d(x, y, 0);
} finally {
gl.glEnd();
}
y -= this.lineSpacing;
}
} finally {
if (matrixPushed) {
gl.glPopMatrix();
}
}
}
public static void main(String[] args) {
int x = 500, y = 80;
DrawingKit dk = new DrawingKit("Daffodils", 800, 800);
BufferedImage pict = dk.loadPicture("daffodils.jpg");
// get pixel value at location (500, 80)
int encodedPixelColor = pict.getRGB(x, y);
Color pixelColor = new Color(encodedPixelColor);
System.out.println(pixelColor);
int red = pixelColor.getRed();
int green = pixelColor.getGreen();
int blue = pixelColor.getBlue();
// change the color of the pixel to be pure red
red = 255;
green = 0;
blue = 0;
// update the pixel color in picture
Color newPixelColor = new Color(red, green, blue);
int newRgbvalue = newPixelColor.getRGB();
pict.setRGB(x, y, newRgbvalue);
// display the approximate location of the pixel
dk.drawPicture(pict, 0, 0);
BasicStroke s = new BasicStroke(3);
dk.setStroke(s);
Ellipse2D.Float e = new Ellipse2D.Float(x - 3, y - 3, 8, 8);
dk.draw(e);
dk.drawString("(600, 150)", x - 3, y - 5);
}
@Override
public int getColor(VisualItem item) {
// get value for target attr in item
if (item.canGetString(colorAttrName)) {
String attrVal = item.getString(colorAttrName);
Color attrValColor = catToColorMap.get(attrVal);
if (attrValColor == null) {
return Color.CYAN.getRGB();
}
return attrValColor.getRGB();
}
Color white = Color.WHITE;
return white.getRGB();
}
public void run(ImageProcessor ip) {
if (enlarge && gd.wasOKed())
synchronized (this) {
if (!isEnlarged) {
enlargeCanvas();
isEnlarged = true;
}
}
if (isEnlarged) { // enlarging may have made the ImageProcessor invalid, also for the parallel
// threads
int slice = pfr.getSliceNumber();
if (imp.getStackSize() == 1) ip = imp.getProcessor();
else ip = imp.getStack().getProcessor(slice);
}
ip.setInterpolationMethod(interpolationMethod);
if (fillWithBackground) {
Color bgc = Toolbar.getBackgroundColor();
if (bitDepth == 8) ip.setBackgroundValue(ip.getBestIndex(bgc));
else if (bitDepth == 24) ip.setBackgroundValue(bgc.getRGB());
} else ip.setBackgroundValue(0);
ip.rotate(angle);
if (!gd.wasOKed()) drawGridLines(gridLines);
if (isEnlarged && imp.getStackSize() == 1) {
imp.changes = true;
imp.updateAndDraw();
Undo.setup(Undo.COMPOUND_FILTER_DONE, imp);
}
}
/**
* WhiteboardShapeLine constructor.
*
* @param id String that uniquely identifies this WhiteboardObject.
* @param t number of pixels that this object (or its border) should be thick.
* @param c WhiteboardShapeLine's color (or rather it's border)
* @param startPoint the start coordinates of this line.
* @param endPoint the end coordinates of this line.
*/
public WhiteboardShapeLine(
String id, int t, Color c, WhiteboardPoint startPoint, WhiteboardPoint endPoint) {
super(id);
this.setThickness(t);
setColor(c);
setColor(c.getRGB());
this.endPoint = endPoint;
this.startPoint = startPoint;
}
/**
* Gets the stroke paint for the specified figure based on the attributes STROKE_GRADIENT,
* STROKE_OPACITY, STROKE_PAINT and the bounds of the figure. Returns null if the figure is not
* filled.
*/
public static Paint getStrokePaint(Figure f) {
double opacity = STROKE_OPACITY.get(f);
if (STROKE_GRADIENT.get(f) != null) {
return STROKE_GRADIENT.get(f).getPaint(f, opacity);
}
Color color = STROKE_COLOR.get(f);
if (color != null) {
if (opacity != 1) {
color = new Color((color.getRGB() & 0xffffff) | (int) (opacity * 255) << 24, true);
}
}
return color;
}
/** Returns the color used for "Show All" mode. */
public static Color getShowAllColor() {
if (showAllColor != null && showAllColor.getRGB() == 0xff80ffff) showAllColor = Color.cyan;
return showAllColor;
}
// Rendering
public void draw(DrawContext dc) {
GL gl = dc.getGL();
boolean attribsPushed = false;
boolean modelviewPushed = false;
boolean projectionPushed = false;
try {
gl.glPushAttrib(
GL.GL_DEPTH_BUFFER_BIT
| GL.GL_COLOR_BUFFER_BIT
| GL.GL_ENABLE_BIT
| GL.GL_TEXTURE_BIT
| GL.GL_TRANSFORM_BIT
| GL.GL_VIEWPORT_BIT
| GL.GL_CURRENT_BIT);
attribsPushed = true;
gl.glDisable(GL.GL_TEXTURE_2D); // no textures
gl.glEnable(GL.GL_BLEND);
gl.glBlendFunc(GL.GL_SRC_ALPHA, GL.GL_ONE_MINUS_SRC_ALPHA);
gl.glDisable(GL.GL_DEPTH_TEST);
double width = this.size.width;
double height = this.size.height;
// Load a parallel projection with xy dimensions (viewportWidth, viewportHeight)
// into the GL projection matrix.
java.awt.Rectangle viewport = dc.getView().getViewport();
gl.glMatrixMode(javax.media.opengl.GL.GL_PROJECTION);
gl.glPushMatrix();
projectionPushed = true;
gl.glLoadIdentity();
double maxwh = width > height ? width : height;
gl.glOrtho(0d, viewport.width, 0d, viewport.height, -0.6 * maxwh, 0.6 * maxwh);
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glPushMatrix();
modelviewPushed = true;
gl.glLoadIdentity();
// Scale to a width x height space
// located at the proper position on screen
double scale = this.computeScale(viewport);
Vec4 locationSW = this.computeLocation(viewport, scale);
gl.glTranslated(locationSW.x(), locationSW.y(), locationSW.z());
gl.glScaled(scale, scale, 1);
// Compute scale size in real world
Position referencePosition = dc.getViewportCenterPosition();
if (referencePosition != null) {
Vec4 groundTarget = dc.getGlobe().computePointFromPosition(referencePosition);
Double distance = dc.getView().getEyePoint().distanceTo3(groundTarget);
this.pixelSize = dc.getView().computePixelSizeAtDistance(distance);
Double scaleSize = this.pixelSize * width * scale; // meter
String unitLabel = "m";
if (this.unit.equals(UNIT_METRIC)) {
if (scaleSize > 10000) {
scaleSize /= 1000;
unitLabel = "Km";
}
} else if (this.unit.equals(UNIT_IMPERIAL)) {
scaleSize *= 3.280839895; // feet
unitLabel = "ft";
if (scaleSize > 5280) {
scaleSize /= 5280;
unitLabel = "mile(s)";
}
}
// Rounded division size
int pot = (int) Math.floor(Math.log10(scaleSize));
if (!Double.isNaN(pot)) {
int digit = Integer.parseInt(String.format("%.0f", scaleSize).substring(0, 1));
double divSize = digit * Math.pow(10, pot);
if (digit >= 5) divSize = 5 * Math.pow(10, pot);
else if (digit >= 2) divSize = 2 * Math.pow(10, pot);
double divWidth = width * divSize / scaleSize;
// Draw scale
if (!dc.isPickingMode()) {
// Set color using current layer opacity
Color backColor = this.getBackgroundColor(this.color);
float[] colorRGB = backColor.getRGBColorComponents(null);
gl.glColor4d(
colorRGB[0],
colorRGB[1],
colorRGB[2],
(double) backColor.getAlpha() / 255d * this.getOpacity());
gl.glTranslated((width - divWidth) / 2, 0d, 0d);
this.drawScale(dc, divWidth, height);
colorRGB = this.color.getRGBColorComponents(null);
gl.glColor4d(colorRGB[0], colorRGB[1], colorRGB[2], this.getOpacity());
gl.glTranslated(-1d / scale, 1d / scale, 0d);
this.drawScale(dc, divWidth, height);
// Draw label
String label = String.format("%.0f ", divSize) + unitLabel;
gl.glLoadIdentity();
gl.glDisable(GL.GL_CULL_FACE);
drawLabel(
dc,
label,
locationSW.add3(
new Vec4(divWidth * scale / 2 + (width - divWidth) / 2, height * scale, 0)));
} else {
// Picking
this.pickSupport.clearPickList();
this.pickSupport.beginPicking(dc);
// Draw unique color across the map
Color color = dc.getUniquePickColor();
int colorCode = color.getRGB();
// Add our object(s) to the pickable list
this.pickSupport.addPickableObject(colorCode, this, referencePosition, false);
gl.glColor3ub((byte) color.getRed(), (byte) color.getGreen(), (byte) color.getBlue());
gl.glTranslated((width - divWidth) / 2, 0d, 0d);
this.drawRectangle(dc, divWidth, height);
// Done picking
this.pickSupport.endPicking(dc);
this.pickSupport.resolvePick(dc, dc.getPickPoint(), this);
}
}
}
} finally {
if (projectionPushed) {
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glPopMatrix();
}
if (modelviewPushed) {
gl.glMatrixMode(GL.GL_MODELVIEW);
gl.glPopMatrix();
}
if (attribsPushed) gl.glPopAttrib();
}
}
