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02f7152a1918ceedb46d7d6914e2a95a83ee6eb9
processing4/core/PGraphics2.java
benfry 02f7152a19 improving java2d integration
2005-02-15 18:26:32 +00:00

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/* -*- mode: jde; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
PGraphics2 - graphics engine implemented via java2d
Part of the Processing project - http://processing.org
Copyright (c) 2005 Ben Fry and Casey Reas
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General
Public License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330,
Boston, MA 02111-1307 USA
*/
package processing.core;
//import java.applet.*;
import java.awt.*;
//import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.*;
//import java.io.*;
// Graphics, GeneralPath, AffineTransform, BasicStroke, Graphics2D
public class PGraphics2 extends PGraphics {
Graphics2D graphics;
GeneralPath gpath;
int transformCount;
AffineTransform transformStack[] =
new AffineTransform[MATRIX_STACK_DEPTH];
double transform[] = new double[6];
Line2D.Float line = new Line2D.Float();
Ellipse2D.Float ellipse = new Ellipse2D.Float();
Rectangle2D.Float rect = new Rectangle2D.Float();
Arc2D.Float arc = new Arc2D.Float();
//////////////////////////////////////////////////////////////
// INTERNAL
/**
* Constructor for the PGraphics2 object.
* This prototype only exists because of annoying
* java compilers, and should not be used.
*/
public PGraphics2() { }
/**
* Constructor for the PGraphics object. Use this to ensure that
* the defaults get set properly. In a subclass, use this(w, h)
* as the first line of a subclass' constructor to properly set
* the internal fields and defaults.
*
* @param iwidth viewport width
* @param iheight viewport height
*/
public PGraphics2(int iwidth, int iheight) {
resize(iwidth, iheight);
}
/**
* Called in repsonse to a resize event, handles setting the
* new width and height internally, as well as re-allocating
* the pixel buffer for the new size.
*
* Note that this will nuke any cameraMode() settings.
*/
public void resize(int iwidth, int iheight) { // ignore
//System.out.println("resize " + iwidth + " " + iheight);
width = iwidth;
height = iheight;
width1 = width - 1;
height1 = height - 1;
allocate();
// clear the screen with the old background color
background(backgroundColor);
}
// broken out because of subclassing for opengl
protected void allocate() {
image = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
graphics = (Graphics2D) image.getGraphics();
}
//////////////////////////////////////////////////////////////
// FRAME
// turn off mis.newPixels
public void endFrame() {
// moving this back here (post-68) because of macosx thread problem
//mis.newPixels(pixels, cm, 0, width);
}
//////////////////////////////////////////////////////////////
// SHAPES
public void vertex(float x, float y) {
splineVertexCount = 0;
float vertex[];
if (vertexCount == vertices.length) {
float temp[][] = new float[vertexCount<<1][VERTEX_FIELD_COUNT];
System.arraycopy(vertices, 0, temp, 0, vertexCount);
vertices = temp;
//message(CHATTER, "allocating more vertices " + vertices.length);
}
// not everyone needs this, but just easier to store rather
// than adding another moving part to the code...
vertices[vertexCount][MX] = x;
vertices[vertexCount][MY] = x;
vertexCount++;
switch (shape) {
case POINTS:
point(x, y);
break;
case LINES:
if ((vertexCount % 2) == 0) {
line(vertices[vertexCount-2][MX],
vertices[vertexCount-2][MY], x, y);
}
break;
case LINE_STRIP:
case LINE_LOOP:
if (vertexCount == 1) {
gpath = new GeneralPath();
gpath.moveTo(x, y);
} else {
gpath.lineTo(x, y);
}
break;
case TRIANGLES:
if ((vertexCount % 3) == 0) {
triangle(vertices[vertexCount - 3][MX],
vertices[vertexCount - 3][MY],
vertices[vertexCount - 2][MX],
vertices[vertexCount - 2][MY],
x, y);
}
break;
case TRIANGLE_STRIP:
if (vertexCount == 3) {
triangle(vertices[0][MX], vertices[0][MY],
vertices[1][MX], vertices[1][MY],
x, y);
} else if (vertexCount > 3) {
gpath = new GeneralPath();
// when vertexCount == 4, draw an un-closed triangle
// for indices 2, 3, 1
gpath.moveTo(vertices[vertexCount - 2][MX],
vertices[vertexCount - 2][MY]);
gpath.lineTo(vertices[vertexCount - 1][MX],
vertices[vertexCount - 1][MY]);
gpath.lineTo(vertices[vertexCount - 3][MX],
vertices[vertexCount - 3][MY]);
draw_shape(gpath);
}
break;
case TRIANGLE_FAN:
if (vertexCount == 3) {
triangle(vertices[0][MX], vertices[0][MY],
vertices[1][MX], vertices[1][MY],
x, y);
} else if (vertexCount > 3) {
gpath = new GeneralPath();
// when vertexCount > 3, draw an un-closed triangle
// for indices 0 (center), previous, current
gpath.moveTo(vertices[0][MX],
vertices[0][MY]);
gpath.lineTo(vertices[vertexCount - 2][MX],
vertices[vertexCount - 2][MY]);
gpath.lineTo(x, y);
draw_shape(gpath);
}
break;
case QUADS:
if ((vertexCount % 4) == 0) {
quad(vertices[vertexCount - 4][MX],
vertices[vertexCount - 4][MY],
vertices[vertexCount - 3][MX],
vertices[vertexCount - 3][MY],
vertices[vertexCount - 2][MX],
vertices[vertexCount - 2][MY],
x, y);
}
break;
case QUAD_STRIP:
// 0---2---4
// | | |
// 1---3---5
if (vertexCount == 4) {
// note difference in winding order:
quad(vertices[0][MX], vertices[0][MY],
vertices[2][MX], vertices[2][MY],
x, y,
vertices[1][MX], vertices[1][MY]);
} else if (vertexCount > 4) {
gpath = new GeneralPath();
// when vertexCount == 5, draw an un-closed triangle
// for indices 2, 4, 5, 3
gpath.moveTo(vertices[vertexCount - 3][MX],
vertices[vertexCount - 3][MY]);
gpath.lineTo(vertices[vertexCount - 1][MX],
vertices[vertexCount - 1][MY]);
gpath.lineTo(x, y);
gpath.lineTo(vertices[vertexCount - 2][MX],
vertices[vertexCount - 2][MY]);
draw_shape(gpath);
}
break;
case POLYGON:
case CONCAVE_POLYGON:
case CONVEX_POLYGON:
if (vertexCount == 1) {
gpath = new GeneralPath();
gpath.moveTo(x, y);
} else {
gpath.lineTo(x, y);
}
break;
}
}
public void bezierVertex(float x, float y) {
vertexCount = 0;
if (splineVertices == null) {
splineVertices = new float[DEFAULT_SPLINE_VERTICES][VERTEX_FIELD_COUNT];
}
// if more than 128 points, shift everything back to the beginning
if (splineVertexCount == DEFAULT_SPLINE_VERTICES) {
System.arraycopy(splineVertices[DEFAULT_SPLINE_VERTICES - 3], 0,
splineVertices[0], 0, VERTEX_FIELD_COUNT);
System.arraycopy(splineVertices[DEFAULT_SPLINE_VERTICES - 2], 0,
splineVertices[1], 0, VERTEX_FIELD_COUNT);
splineVertexCount = 3;
}
splineVertices[splineVertexCount][MX] = x;
splineVertices[splineVertexCount][MY] = y;
splineVertexCount++;
switch (shape) {
case LINE_LOOP:
case POLYGON:
case CONCAVE_POLYGON:
case CONVEX_POLYGON:
if (splineVertexCount == 1) {
gpath.moveTo(x, y);
} else if (splineVertexCount >= 4) {
gpath.curveTo(splineVertices[splineVertexCount-3][MX],
splineVertices[splineVertexCount-3][MY],
splineVertices[splineVertexCount-2][MX],
splineVertices[splineVertexCount-2][MY],
x, y);
}
break;
}
}
public void curveVertex(float x, float y) {
// TODO handle inverse matrix action
}
public void endShape() {
shape = 0;
switch (shape) {
case LINE_STRIP:
stroke_shape(gpath);
break;
case LINE_LOOP:
gpath.closePath();
stroke_shape(gpath);
break;
case POLYGON:
case CONCAVE_POLYGON:
case CONVEX_POLYGON:
gpath.closePath();
draw_shape(gpath);
break;
}
}
//////////////////////////////////////////////////////////////
// SHAPES
protected void fill_shape(Shape s) {
if (fill) {
graphics.setColor(fillColorObject);
graphics.fill(s);
}
}
protected void stroke_shape(Shape s) {
if (stroke) {
graphics.setColor(strokeColorObject);
graphics.draw(s);
}
}
protected void draw_shape(Shape s) {
if (fill) {
graphics.setColor(fillColorObject);
graphics.fill(s);
}
if (stroke) {
graphics.setColor(strokeColorObject);
graphics.draw(s);
}
}
public void point(float x, float y) {
//graphics.setColor(strokeColorObject);
//graphics.drawLine(x1, y1, x2, y2);
line(x, y, x, y);
}
public void line(float x1, float y1, float x2, float y2) {
//graphics.setColor(strokeColorObject);
//graphics.drawLine(x1, y1, x2, y2);
line.setLine(x1, y1, x2, y2);
stroke_shape(line);
}
public void triangle(float x1, float y1, float x2, float y2,
float x3, float y3) {
gpath = new GeneralPath();
gpath.moveTo(x1, y1);
gpath.lineTo(x2, y2);
gpath.lineTo(x3, y3);
gpath.closePath();
draw_shape(gpath);
}
public void rect(float x1, float y1, float x2, float y2) {
switch (rectMode) {
case CORNERS:
rect.setFrameFromDiagonal(x1, y1, x2, y2);
break;
case CORNER:
rect.setFrame(x1, y1, x2, y2);
break;
case CENTER_RADIUS:
rect.setFrame(x1 - x2, y1 - y2, x1 + x2, y1 + y2);
break;
case CENTER:
rect.setFrame(x1 - x2/2.0f, y1 - y2/2.0f, x1 + x2/2.0f, y1 + y2/2.0f);
break;
}
draw_shape(rect);
}
public void quad(float x1, float y1, float x2, float y2,
float x3, float y3, float x4, float y4) {
GeneralPath gp = new GeneralPath();
gp.moveTo(x1, y1);
gp.lineTo(x2, y2);
gp.lineTo(x3, y3);
gp.lineTo(x4, y4);
gp.closePath();
draw_shape(gp);
}
public void ellipse(float a, float b, float c, float d) {
float x = a;
float y = b;
float w = c;
float h = d;
if (ellipseMode == CORNERS) {
w = c - a;
h = d - b;
} else if (ellipseMode == CENTER_RADIUS) {
x = a - c;
y = b - d;
w = c * 2;
h = d * 2;
} else if (ellipseMode == CENTER) {
x = a - c/2f;
y = b - d/2f;
}
ellipse.setFrame(x, y, w, h);
draw_shape(ellipse);
}
/*
public void arc(float start, float stop,
float x, float y, float radius) {
arc(start, stop, x, y, radius, radius);
}
*/
public void arc(float start, float stop,
float a, float b, float c, float d) {
float x = a;
float y = b;
float w = c;
float h = d;
if (ellipseMode == CORNERS) {
w = c - a;
h = d - b;
} else if (ellipseMode == CENTER_RADIUS) {
x = a - c;
y = b - d;
w = c * 2;
h = d * 2;
} else if (ellipseMode == CENTER) {
x = a - c/2f;
y = b - d/2f;
}
arc.setArc(x, y, w, h, start, stop-start, Arc2D.PIE);
draw_shape(arc);
}
//public void circle(float x, float y, float radius) {
//ellipse(x, y, radius, radius);
//}
public void bezier(float x1, float y1,
float x2, float y2,
float x3, float y3,
float x4, float y4) {
GeneralPath gp = new GeneralPath();
gp.moveTo(x1, y1);
gp.curveTo(x2, y2, x3, y3, x4, y4);
gp.closePath();
draw_shape(gp);
}
public void bezierDetail(int detail) {
// ignored in java2d
}
public void curveDetail(int detail) {
// ignored in java2d
}
public void curveTightness(float tightness) {
// TODO
}
public void curve(float x1, float y1,
float x2, float y2,
float x3, float y3,
float x4, float y4) {
// TODO need inverse catmull rom to bezier matrix
}
//////////////////////////////////////////////////////////////
// IMAGES
protected void draw_image(PImage image,
float x1, float y1, float x2, float y2,
int u1, int v1, int u2, int v2) {
graphics.drawImage((Image) image.cache,
(int) x1, (int) y1, (int) x2, (int) y2,
u1, v1, u2, v2, null);
}
public void image(PImage image, float x1, float y1) {
check_image_cache(image);
super.image(image, x1, y1);
}
public void image(PImage image,
float a, float b, float c, float d) {
check_image_cache(image);
super.image(image, a, b, c, d);
}
public void image(PImage image,
float a, float b, float c, float d,
int u1, int v1, int u2, int v2) {
check_image_cache(image);
super.image(image, a, b, c, d, u1, v1, u2, v2);
}
protected void check_image_cache(PImage who) {
if (who.cache == null) {
who.cache = new BufferedImage(who.width, who.height,
BufferedImage.TYPE_INT_ARGB);
who.modified(); // mark the whole thing for update
}
if (who.modified) {
// update the sub-portion of the image as necessary
BufferedImage bi = (BufferedImage) who.cache;
bi.setRGB(who.mx1, who.my1,
who.mx2 - who.mx1 + 1,
who.my2 - who.my1 + 1,
who.pixels,
who.my1*who.width + who.mx1, // offset for copy
who.width); // scan size
who.resetModified();
}
}
//////////////////////////////////////////////////////////////
/*
public void textFont(PFont which);
public void textSize(float size);
public void textFont(PFont which, float size);
public void textLeading(float leading);
public void textMode(int mode);
public void textSpace(int space);
public void text(char c, float x, float y);
public void text(char c, float x, float y, float z);
public void text(String s, float x, float y);
public void text(String s, float x, float y, float z);
public void text(String s, float x, float y, float w, float h);
public void text(String s, float x1, float y1, float z, float x2, float y2);
public void text(int num, float x, float y);
public void text(int num, float x, float y, float z);
public void text(float num, float x, float y);
public void text(float num, float x, float y, float z);
*/
//////////////////////////////////////////////////////////////
// MATRIX
public void translate(float tx, float ty) {
graphics.translate(tx, ty);
}
public void rotate(float angle) {
graphics.rotate(angle);
}
public void scale(float s) {
graphics.scale(s, s);
}
public void scale(float sx, float sy) {
graphics.scale(sx, sy);
}
public void push() {
if (transformCount == transformStack.length) {
throw new RuntimeException("push() cannot use push more than " +
transformStack.length + " times");
}
transformStack[transformCount] = graphics.getTransform();
transformCount++;
}
public void pop() {
if (transformCount == 0) {
throw new RuntimeException("missing a pop() to go with that push()");
}
transformCount--;
graphics.setTransform(transformStack[transformCount]);
}
public void resetMatrix() {
graphics.setTransform(new AffineTransform());
}
public void applyMatrix(float n00, float n01, float n02,
float n10, float n11, float n12) {
graphics.transform(new AffineTransform(n00, n10, n01, n11, n02, n12));
}
public void printMatrix() {
graphics.getTransform().getMatrix(transform);
m00 = (float) transform[0];
m01 = (float) transform[2];
m02 = (float) transform[4];
m10 = (float) transform[1];
m11 = (float) transform[3];
m12 = (float) transform[5];
super.printMatrix();
}
public float screenX(float x, float y) {
graphics.getTransform().getMatrix(transform);
//return m00*x + m01*y + m02;
return (float)transform[0]*x + (float)transform[2]*y + (float)transform[4];
}
public float screenY(float x, float y) {
graphics.getTransform().getMatrix(transform);
return (float)transform[1]*x + (float)transform[3]*y + (float)transform[5];
}
//////////////////////////////////////////////////////////////
// STROKE
public void strokeWeight(float weight) {
super.strokeWeight(weight);
setStroke();
}
public void strokeJoin(int join) {
super.strokeJoin(join);
setStroke();
}
public void strokeCap(int cap) {
super.strokeCap(cap);
setStroke();
}
protected void setStroke() {
int cap = BasicStroke.CAP_BUTT;
if (strokeCap == ROUND) {
cap = BasicStroke.CAP_ROUND;
} else if (strokeCap == PROJECTED) {
cap = BasicStroke.CAP_SQUARE;
}
int join = BasicStroke.JOIN_BEVEL;
if (strokeJoin == MITERED) {
join = BasicStroke.JOIN_MITER;
} else if (strokeJoin == ROUND) {
join = BasicStroke.JOIN_ROUND;
}
graphics.setStroke(new BasicStroke(strokeWeight, cap, join));
}
//////////////////////////////////////////////////////////////
// STROKE/FILL/BACKGROUND
protected Color tintColorObject;
protected Color fillColorObject;
protected Color strokeColorObject;
protected void calc_tint() {
super.calc_tint();
// TODO actually implement tinted images
tintColorObject = new Color(tintColor);
}
protected void calc_fill() {
super.calc_fill();
//graphics.setPaint(new Color(fillColor));
fillColorObject = new Color(fillColor);
}
protected void calc_stroke() {
super.calc_stroke();
///graphics.setStroke(new Color(fillColor));
strokeColorObject = new Color(strokeColor);
}
public void background(PImage image) {
if ((image.width != width) || (image.height != height)) {
throw new RuntimeException("background image must be " +
"the same size as your application");
}
if ((image.format != RGB) && (image.format != ARGB)) {
throw new RuntimeException("background images should be RGB or ARGB");
}
// make sure it's been properly updated
check_image_cache(image);
// blit image to the screen
graphics.drawImage((BufferedImage) image.cache, 0, 0, null);
}
/**
* Clears pixel buffer. Also clears the stencil and zbuffer
* if they exist. Their existence is more accurate than using 'depth'
* to test whether to clear them, because if they're non-null,
* it means that depth() has been called somewhere in the program,
* even if noDepth() was called before draw() exited.
*/
public void clear() {
graphics.setColor(new Color(backgroundColor));
graphics.fillRect(0, 0, width, height);
}
//////////////////////////////////////////////////////////////
// FROM PIMAGE
public void alpha(int alpha[]) {
// does nothing in PGraphics
}
public void alpha(PImage alpha) {
// does nothing in PGraphics
}
public void filter(int kind) {
// TODO
}
public void filter(int kind, float param) {
// TODO
}
public int get(int x, int y) {
return ((BufferedImage) image).getRGB(x, y);
}
public PImage get(int x, int y, int w, int h) {
PImage output = new PImage(w, h);
((BufferedImage) image).getRGB(x, y, w, h, output.pixels, 0, width);
return output;
}
public void set(int x, int y, int c) {
((BufferedImage) image).setRGB(x, y, c);
}
public void copy(PImage src, int dx, int dy) {
// TODO if this image is not RGB, needs to behave differently
// (if it's gray, need to copy gray pixels)
// for alpha, just leave it be.. copy() doesn't composite
((BufferedImage) image).setRGB(dx, dy, src.width, src.height,
src.pixels, 0, src.width);
}
public void copy(int sx1, int sy1, int sx2, int sy2,
int dx1, int dy1, int dx2, int dy2) {
// TODO
}
public void copy(PImage src, int sx1, int sy1, int sx2, int sy2,
int dx1, int dy1, int dx2, int dy2) {
// TODO
}
public void blend(PImage src, int sx, int sy, int dx, int dy, int mode) {
// TODO
}
public void blend(int sx, int sy, int dx, int dy, int mode) {
// TODO
}
public void blend(int sx1, int sy1, int sx2, int sy2,
int dx1, int dy1, int dx2, int dy2, int mode) {
// TODO
}
public void blend(PImage src, int sx1, int sy1, int sx2, int sy2,
int dx1, int dy1, int dx2, int dy2, int mode) {
// TODO
}
/**
* This is used to both set the pixels[] array so that it can be
* manipulated, and it also returns a PImage object that can be
* messed with directly.
*/
public PImage get() {
//PImage outgoing = new PImage(width, height);
// int[] getRGB(int startX, int startY, int w, int h,
// int[] rgbArray, int offset, int scansize)
if (pixels == null) {
pixels = new int[width * height];
}
((BufferedImage) image).getRGB(0, 0, width, height, pixels, 0, width);
return new PImage(pixels, width, height, RGB);
}
public void save(String filename) {
//static boolean write(RenderedImage im, String formatName, File output)
// maybe use ImageIO.save(File file) here if it's available?
get().save(filename);
}
public void smooth() {
graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
}
public void noSmooth() {
graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_OFF);
}
}
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