reorganized file layout (part 1: moves and renames)

[org.ibex.core.git] / src / org / ibex / PixelBuffer.java

diff --git a/src/org/ibex/PixelBuffer.java b/src/org/ibex/PixelBuffer.java
deleted file mode 100644 (file)
index 1434301..0000000
--- a/src/org/ibex/PixelBuffer.java
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright 2004 Adam Megacz, see the COPYING file for licensing [GPL]
-package org.ibex;
-
-/**
- *  <p>
- *  A block of pixels which can be drawn on.
- *  </p>
- *
- *  <p>
- *  Implementations of the Platform class should return objects
- *  supporting this interface from the _createPixelBuffer()
- *  method. These implementations may choose to use off-screen video
- *  ram for this purpose (for example, a Pixmap on X11).
- *  </p>
- *
- *  <p>
- *  Many of these functions come in pairs, one that uses ints and one
- *  that uses floats.  The int functions are intended for situations
- *  in which the CTM is the identity transform.
- *  </p>
- */
-public abstract class PixelBuffer {
-
-    /** draw the picture at (dx1, dy1), cropping to (cx1, cy1, cx2, cy2) */
-    protected abstract void drawPicture(Picture source, int dx1, int dy1, int cx1, int cy1, int cx2, int cy2);
-
-    /** fill a trapezoid whose top and bottom edges are horizontal */
-    public abstract void fillTrapezoid(int x1, int x2, int y1, int x3, int x4, int y2, int color);
-
-    /**
-     *  Same as drawPicture, but only uses the alpha channel of the Picture, and is allowed to destructively modify the RGB
-     *  channels of the Picture in the process.  This method may assume that the RGB channels of the image are all zero IFF it
-     *  restores this invariant before returning.
-     */
-    public abstract void drawGlyph(Font.Glyph source, int dx1, int dy1, int cx1, int cy1, int cx2, int cy2, int rgb);
-
-    // FEATURE: we want floats (inter-pixel spacing) for antialiasing, but this hoses the fastpath line drawing... argh!
-    /** draws a line of width <tt>w</tt>; note that the coordinates here are <i>post-transform</i> */
-    public void drawLine(int x1, int y1, int x2, int y2, int w, int color, boolean capped) {
-
-       if (y1 > y2) { int t = x1; x1 = x2; x2 = t; t = y1; y1 = y2; y2 = t; }
-
-       if (x1 == x2) {
-            fillTrapezoid(x1 - w / 2, x2 + w / 2, y1 - (capped ? w / 2 : 0),
-                          x1 - w / 2, x2 + w / 2, y2 + (capped ? w / 2 : 0), color);
-            return;
-        }
-
-        // fastpath for single-pixel width lines
-        if (w == 1) {
-            float slope = (float)(y2 - y1) / (float)(x2 - x1);
-            int last_x = x1;
-            for(int y=y1; y<=y2; y++) {
-                int new_x = (int)((float)(y - y1) / slope) + x1;
-                if (slope >= 0) fillTrapezoid(last_x + 1, y != y2 ? new_x + 1 : new_x, y,
-                                              last_x + 1, y != y2 ? new_x + 1 : new_x, y + 1, color);
-                else fillTrapezoid(y != y2 ? new_x : new_x + 1, last_x, y,
-                                   y != y2 ? new_x : new_x + 1, last_x, y + 1, color);
-                last_x = new_x;
-            }
-            return;
-        }
-
-        // actually half-width
-       float width = (float)w / 2;
-       float phi = (float)Math.atan((y2 - y1) / (x2 - x1));
-       if (phi < 0.0) phi += (float)Math.PI * 2;
-       float theta = (float)Math.PI / 2 - phi;
-
-       // dx and dy are the x and y distance between each endpoint and the corner of the stroke
-       int dx = (int)(width * Math.cos(theta));
-       int dy = (int)(width * Math.sin(theta));
-
-       // slice is the longest possible length of a horizontal line across the stroke
-       int slice = (int)(2 * width / Math.cos(theta));
-
-       if (capped) {
-           x1 -= width * Math.cos(phi);
-           x2 += width * Math.cos(phi);
-           y1 -= width * Math.sin(phi);
-           y2 += width * Math.sin(phi);
-       }
-
-       fillTrapezoid(x1 + dx, x1 + dx, y1 - dy, x1 - dx, x1 - dx + slice, y1 + dy, color);           // top corner
-       fillTrapezoid(x2 + dx - slice, x2 + dx, y2 - dy, x2 - dx, x2 - dx, y2 + dy, color);           // bottom corner
-       fillTrapezoid(x1 - dx, x1 - dx + slice, y1 + dy, x2 + dx - slice, x2 + dx, y2 - dy, color);   // middle
-    }
-
-}