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// SSI - Simple Scanline Image // A partial image consisting of exactly one horizontal line per row. // All pixels are of the same color. // The important values are y1 and data persistable sclass SSI is HasBounds, G2Drawable { // core value (mandatory): first row occupied int y1; // core value (mandatory): x coordinates per row // x_left is inclusive, x_right is exclusive // // Order in array: // x_left at y1, x_right at y1, // x_left at y1+1, x_right at y1+1, ,,, int[] data; // Color in 15 bit settable short hi15color; *(int *y1, int y2) { data = newIntArrayOrNull((y2-y1)*2); } void set(int y, int xLeft, int xRight) { data[(y-y1)*2] = xLeft; data[(y-y1)*2+1] = xRight; } // bounds can be calculated quickly from core values public simplyCached Rect bounds() { int x1 = Int.MAX_VALUE, x2 = 0; for (int i = 0; i < l(data); i += 2) { x1 = min(x1, data[i]); x2 = max(x2, data[i+1]); } ret rectFromPoints(x1, y1, x2, y2()); } int height() { ret l(data)/2; } int y2() { ret y1+height(); } bool contains(Pt p) { ret contains(p.x, p.y); } bool contains(int x, int y) { if (y < y1) false; int i = (y-y1)*2; if (i >= l(data)) false; ret x >= data[i] && x < data[i+1]; } Color color() { ret main hi15color(hi15color); } public void drawOn(Graphics2D g) { g.setColor(color()); int h = height(); for y to h: { int x1 = data[y*2], x2 = data[y*2+1]; if (x1 < x2) g.drawLine(x1, y1+y, x2-1, y1+y); } } }