121 lines
3.9 KiB
Java
121 lines
3.9 KiB
Java
package a2geek.apple2.image.encoder;
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import java.awt.Graphics;
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import java.awt.image.BufferedImage;
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/**
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* Represents an abstract Apple II image.
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* @author a2geek@users.noreply.github.com
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*/
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public abstract class A2Image {
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private BufferedImage image;
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private int height;
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private int width;
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public A2Image(BufferedImage originalImage, int physicalHeight, int physicalWidth, boolean keepAspectRatio) {
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this.height = physicalHeight;
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this.width = physicalWidth;
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this.image = new BufferedImage(physicalWidth, physicalHeight, BufferedImage.TYPE_INT_RGB);
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int x = 0;
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int y = 0;
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if (keepAspectRatio) {
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double aspectRatioH = (double)physicalHeight / (double)originalImage.getHeight();
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double aspectRatioW = (double)physicalWidth / (double)originalImage.getWidth();
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double aspectRatio = (aspectRatioH < aspectRatioW) ?
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aspectRatioH : aspectRatioW;
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height = (int)(originalImage.getHeight() * aspectRatio);
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width = (int)(originalImage.getWidth() * aspectRatio);
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x = (physicalWidth - width) / 2;
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y = (physicalHeight - height) / 2;
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}
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Graphics g = this.image.getGraphics();
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g.drawImage(originalImage, x, y, width, height, null);
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g.dispose();
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this.height = physicalHeight;
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this.width = physicalWidth;
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}
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public int getHeight() {
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return height;
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}
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public int getWidth() {
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return width;
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}
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public int getTotalBytes() {
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return getTotalPixels() / 2;
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}
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public int getTotalPixels() {
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return height * width;
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}
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protected int getRGB(int x, int y) {
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return image.getRGB(x,y);
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}
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protected void setRGB(int x, int y, int color) {
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image.setRGB(x, y, color);
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}
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public BufferedImage getImage() {
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return image;
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}
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/**
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* Get Apple II color at X, Y.
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*/
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public abstract int getColor(int x, int y);
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/**
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* Get Apple II color treating the screen as an array of pixels.
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*/
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public int getColor(int pos) {
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if (pos >= getTotalPixels()) return -1;
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int y = (pos / getWidth());
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int x = pos % getWidth();
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return getColor(x,y);
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}
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/**
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* Get a byte of memory as stored by the hardware.
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*/
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public abstract int getMemoryByte(int x, int y);
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/**
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* Treat the screen as an array of bytes.
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*/
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public abstract int getMemoryByte(int pos);
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/**
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* Test if, from a given coordinate, the rest of the row is a given color.
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*/
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public boolean checkRowColor(int y, int xStart, int color) {
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for (int x=xStart; x<getWidth(); x++) {
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if (getColor(x,y) != color) return false;
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}
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return true;
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}
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/**
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* Create a byte array of a physical memory dump for the image.
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*/
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public abstract byte[] getBytes();
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/**
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* Setup the default Apple II 16 colors (lores, double lores, double hires colors).
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*/
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public static PaletteEntry[] getStandard12BitPalette() {
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PaletteEntry[] standardPalette = new PaletteEntry[16];
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standardPalette[0x0] = new PaletteEntry(0x000); // black
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standardPalette[0x1] = new PaletteEntry(0xf00); // magenta
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standardPalette[0x2] = new PaletteEntry(0x800); // brown
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standardPalette[0x3] = new PaletteEntry(0xf80); // orange
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standardPalette[0x4] = new PaletteEntry(0x080); // dark green
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standardPalette[0x5] = new PaletteEntry(0x888); // grey1
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standardPalette[0x6] = new PaletteEntry(0x0f0); // green
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standardPalette[0x7] = new PaletteEntry(0xff0); // yellow
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standardPalette[0x8] = new PaletteEntry(0x008); // dark blue
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standardPalette[0x9] = new PaletteEntry(0xf0f); // violet
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standardPalette[0xa] = new PaletteEntry(0xccc); // grey2
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standardPalette[0xb] = new PaletteEntry(0xf8c); // pink
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standardPalette[0xc] = new PaletteEntry(0x00c); // medium blue
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standardPalette[0xd] = new PaletteEntry(0x00f); // light blue
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standardPalette[0xe] = new PaletteEntry(0x0c8); // aqua
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standardPalette[0xf] = new PaletteEntry(0xfff); // white
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// Force each entry to be active
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for (PaletteEntry paletteEntry : standardPalette) paletteEntry.setActive();
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return standardPalette;
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}
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}
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