/* * Polygon.java * Copyright (C) 2003 * * $Id: Polygon.java,v 1.2 2005-01-10 00:14:33 cawe Exp $ */ /* Copyright (C) 1997-2001 Id Software, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program 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 General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ package jake2.render.fastjogl; import jake2.render.glpoly_t; import jake2.util.Lib; import java.nio.FloatBuffer; /** * Polygon * * @author cwei */ public final class Polygon extends glpoly_t { private final static int MAX_POLYS = 20000; private final static int MAX_BUFFER_VERTICES = 120000; // backup for s1 scrolling private static float[] s1_old = new float[MAX_VERTICES]; private static FloatBuffer buffer = Lib.newFloatBuffer(MAX_BUFFER_VERTICES * STRIDE); private static int bufferIndex = 0; private static int polyCount = 0; private static Polygon[] polyCache = new Polygon[MAX_POLYS]; static { for (int i = 0; i < polyCache.length; i++) { polyCache[i] = new Polygon(); } } static glpoly_t create(int numverts) { Polygon poly = polyCache[polyCount++]; poly.clear(); poly.numverts = numverts; poly.pos = bufferIndex; bufferIndex += numverts; return poly; } static void reset() { polyCount = 0; bufferIndex = 0; } static FloatBuffer getInterleavedBuffer() { return (FloatBuffer)buffer.rewind(); } private Polygon() { } private final void clear() { next = null; chain = null; numverts = 0; flags = 0; } // the interleaved buffer has the format: // textureCoord0 (index 0, 1) // vertex (index 2, 3, 4) // textureCoord1 (index 5, 6) public final float x(int index) { return buffer.get((index + pos) * 7 + 2); } public final void x(int index, float value) { buffer.put((index + pos) * 7 + 2, value); } public final float y(int index) { return buffer.get((index + pos) * 7 + 3); } public final void y(int index, float value) { buffer.put((index + pos) * 7 + 3, value); } public final float z(int index) { return buffer.get((index + pos) * 7 + 4); } public final void z(int index, float value) { buffer.put((index + pos) * 7 + 4, value); } public final float s1(int index) { return buffer.get((index + pos) * 7 + 0); } public final void s1(int index, float value) { buffer.put((index + pos) * 7 + 0, value); } public final float t1(int index) { return buffer.get((index + pos) * 7 + 1); } public final void t1(int index, float value) { buffer.put((index + pos) * 7 + 1, value); } public final float s2(int index) { return buffer.get((index + pos) * 7 + 5); } public final void s2(int index, float value) { buffer.put((index + pos) * 7 + 5, value); } public final float t2(int index) { return buffer.get((index + pos) * 7 + 6); } public final void t2(int index, float value) { buffer.put((index + pos) * 7 + 6, value); } public final void beginScrolling(float scroll) { int index = pos * 7; for (int i = 0; i < numverts; i++, index+=7) { scroll += s1_old[i] = buffer.get(index); buffer.put(index, scroll); } } public final void endScrolling() { int index = pos * 7; for (int i = 0; i < numverts; i++, index+=7) { buffer.put(index, s1_old[i]); } } }