/**
* Draw a filled square of side length 2r, centered on (x, y).
*
* @param x the x-coordinate of the center of the square
* @param y the y-coordinate of the center of the square
* @param r radius is half the length of any side of the square
* @throws RuntimeException if r is negative
*/
public static void filledSquare(double x, double y, double r) {
if (r < 0) throw new RuntimeException("square side length can't be negative");
double xs = scaleX(x);
double ys = scaleY(y);
double ws = factorX(2 * r);
double hs = factorY(2 * r);
if (ws <= 1 && hs <= 1) pixel(x, y);
else offscreen.fill(new Rectangle2D.Double(xs - ws / 2, ys - hs / 2, ws, hs));
draw();
}
/**
* Draw filled circle of radius r, centered on (x, y).
*
* @param x the x-coordinate of the center of the circle
* @param y the y-coordinate of the center of the circle
* @param r the radius of the circle
* @throws RuntimeException if the radius of the circle is negative
*/
public static void filledCircle(double x, double y, double r) {
if (r < 0) throw new RuntimeException("circle radius can't be negative");
double xs = scaleX(x);
double ys = scaleY(y);
double ws = factorX(2 * r);
double hs = factorY(2 * r);
if (ws <= 1 && hs <= 1) pixel(x, y);
else offscreen.fill(new Ellipse2D.Double(xs - ws / 2, ys - hs / 2, ws, hs));
draw();
}
/**
* Draw a filled rectangle of given half width and half height, centered on (x, y).
*
* @param x the x-coordinate of the center of the rectangle
* @param y the y-coordinate of the center of the rectangle
* @param halfWidth is half the width of the rectangle
* @param halfHeight is half the height of the rectangle
* @throws RuntimeException if halfWidth or halfHeight is negative
*/
public static void filledRectangle(double x, double y, double halfWidth, double halfHeight) {
if (halfWidth < 0) throw new RuntimeException("half width can't be negative");
if (halfHeight < 0) throw new RuntimeException("half height can't be negative");
double xs = scaleX(x);
double ys = scaleY(y);
double ws = factorX(2 * halfWidth);
double hs = factorY(2 * halfHeight);
if (ws <= 1 && hs <= 1) pixel(x, y);
else offscreen.fill(new Rectangle2D.Double(xs - ws / 2, ys - hs / 2, ws, hs));
draw();
}
/**
* Draw an ellipse with given semimajor and semiminor axes, centered on (x, y).
*
* @param x the x-coordinate of the center of the ellipse
* @param y the y-coordinate of the center of the ellipse
* @param semiMajorAxis is the semimajor axis of the ellipse
* @param semiMinorAxis is the semiminor axis of the ellipse
* @throws RuntimeException if either of the axes are negative
*/
public static void filledEllipse(double x, double y, double semiMajorAxis, double semiMinorAxis) {
if (semiMajorAxis < 0) throw new RuntimeException("ellipse semimajor axis can't be negative");
if (semiMinorAxis < 0) throw new RuntimeException("ellipse semiminor axis can't be negative");
double xs = scaleX(x);
double ys = scaleY(y);
double ws = factorX(2 * semiMajorAxis);
double hs = factorY(2 * semiMinorAxis);
if (ws <= 1 && hs <= 1) pixel(x, y);
else offscreen.fill(new Ellipse2D.Double(xs - ws / 2, ys - hs / 2, ws, hs));
draw();
}
/**
* Draw a point at (x, y).
*
* @param x the x-coordinate of the point
* @param y the y-coordinate of the point
*/
public static void point(double x, double y) {
double xs = scaleX(x);
double ys = scaleY(y);
double r = penRadius;
// double ws = factorX(2*r);
// double hs = factorY(2*r);
// if (ws <= 1 && hs <= 1) pixel(x, y);
if (r <= 1) pixel(x, y);
else offscreen.fill(new Ellipse2D.Double(xs - r / 2, ys - r / 2, r, r));
draw();
}
/**
* Draw an arc of radius r, centered on (x, y), from angle1 to angle2 (in degrees).
*
* @param x the x-coordinate of the center of the circle
* @param y the y-coordinate of the center of the circle
* @param r the radius of the circle
* @param angle1 the starting angle. 0 would mean an arc beginning at 3 o'clock.
* @param angle2 the angle at the end of the arc. For example, if you want a 90 degree arc, then
* angle2 should be angle1 + 90.
* @throws RuntimeException if the radius of the circle is negative
*/
public static void arc(double x, double y, double r, double angle1, double angle2) {
if (r < 0) throw new RuntimeException("arc radius can't be negative");
while (angle2 < angle1) angle2 += 360;
double xs = scaleX(x);
double ys = scaleY(y);
double ws = factorX(2 * r);
double hs = factorY(2 * r);
if (ws <= 1 && hs <= 1) pixel(x, y);
else
offscreen.draw(
new Arc2D.Double(xs - ws / 2, ys - hs / 2, ws, hs, angle1, angle2 - angle1, Arc2D.OPEN));
draw();
}
/**
* Draw picture (gif, jpg, or png) centered on (x, y), rotated given number of degrees, rescaled
* to w-by-h.
*
* @param x the center x-coordinate of the image
* @param y the center y-coordinate of the image
* @param s the name of the image/picture, e.g., "ball.gif"
* @param w the width of the image
* @param h the height of the image
* @param degrees is the number of degrees to rotate counterclockwise
* @throws RuntimeException if the image is corrupt
*/
public static void picture(double x, double y, String s, double w, double h, double degrees) {
Image image = getImage(s);
double xs = scaleX(x);
double ys = scaleY(y);
double ws = factorX(w);
double hs = factorY(h);
if (ws < 0 || hs < 0) throw new RuntimeException("image " + s + " is corrupt");
if (ws <= 1 && hs <= 1) pixel(x, y);
offscreen.rotate(Math.toRadians(-degrees), xs, ys);
offscreen.drawImage(
image,
(int) Math.round(xs - ws / 2.0),
(int) Math.round(ys - hs / 2.0),
(int) Math.round(ws),
(int) Math.round(hs),
null);
offscreen.rotate(Math.toRadians(+degrees), xs, ys);
draw();
}
/**
* Draw picture (gif, jpg, or png) centered on (x, y), rescaled to w-by-h.
*
* @param x the center x coordinate of the image
* @param y the center y coordinate of the image
* @param s the name of the image/picture, e.g., "ball.gif"
* @param w the width of the image
* @param h the height of the image
* @throws RuntimeException if the width height are negative
* @throws RuntimeException if the image is corrupt
*/
public static void picture(double x, double y, String s, double w, double h) {
Image image = getImage(s);
double xs = scaleX(x);
double ys = scaleY(y);
if (w < 0) throw new RuntimeException("width is negative: " + w);
if (h < 0) throw new RuntimeException("height is negative: " + h);
double ws = factorX(w);
double hs = factorY(h);
if (ws < 0 || hs < 0) throw new RuntimeException("image " + s + " is corrupt");
if (ws <= 1 && hs <= 1) pixel(x, y);
else {
offscreen.drawImage(
image,
(int) Math.round(xs - ws / 2.0),
(int) Math.round(ys - hs / 2.0),
(int) Math.round(ws),
(int) Math.round(hs),
null);
}
draw();
}