326 lines
9.9 KiB
C++
326 lines
9.9 KiB
C++
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//
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// Copyright 2020 Electronic Arts Inc.
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//
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is free
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// software: you can redistribute it and/or modify it under the terms of
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// the GNU General Public License as published by the Free Software Foundation,
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// either version 3 of the License, or (at your option) any later version.
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// TiberianDawn.DLL and RedAlert.dll and corresponding source code is distributed
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// in the hope that it will be useful, but with permitted additional restrictions
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// under Section 7 of the GPL. See the GNU General Public License in LICENSE.TXT
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// distributed with this program. You should have received a copy of the
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// GNU General Public License along with permitted additional restrictions
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// with this program. If not, see https://github.com/electronicarts/CnC_Remastered_Collection
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/* $Header: /CounterStrike/SPRITE.CPP 1 3/03/97 10:25a Joe_bostic $ */
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/**********************************************************************
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Sprite.cpp
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Dec 28,1995
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GraphicBufferClass member functions for blitting, scaling,
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and rotating bitmaps
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**********************************************************************/
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#ifndef WIN32
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class BitmapClass
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{
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public:
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BitmapClass(int w, int h, unsigned char * data) :
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Width(w), Height(h), Data(data) {};
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int Width;
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int Height;
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unsigned char * Data;
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};
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class TPoint2D
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{
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public:
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TPoint2D(int xx, int yy) : x(xx), y(yy) {};
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TPoint2D(void) : x(0), y(0) {};
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int x;
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int y;
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};
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#endif
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//#include "function.h"
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#define FILE_H
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#define RAWFILE_H
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#define WWMEM_H
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#define WWFILE_Hx
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#include <wwlib32.h>
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#include <stdio.h>
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//#include "gbuffer.h"
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//#include "math.h"
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long _SineTab[256] = {
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0 ,6 ,12 , 18 , 25 , 31 , 37 , 43 , 49 , 56 , 62 , 68 , 74 , 80 , 86 ,
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92 , 97 , 103 , 109 , 115 , 120 , 126 , 131 , 136 , 142 , 147 , 152 ,
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157 , 162 , 167 , 171 , 176 , 180 , 185 , 189 , 193 , 197 , 201 , 205 ,
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209 , 212 , 216 , 219 , 222 , 225 , 228 , 231 , 233 , 236 , 238 , 240 ,
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243 , 244 , 246 , 248 , 249 , 251 , 252 , 253 , 254 , 254 , 255 , 255 ,
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255 , 255 , 255 , 255 , 255 , 254 , 254 , 253 , 252 , 251 , 249 , 248 ,
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246 , 245 , 243 , 241 , 238 , 236 , 234 , 231 , 228 , 225 , 222 , 219 ,
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216 , 213 , 209 , 205 , 201 , 198 , 194 , 189 , 185 , 181 , 176 , 172 ,
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167 , 162 , 157 , 152 , 147 , 142 , 137 , 131 , 126 , 120 , 115 , 109 ,
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104 , 98 , 92 , 86 , 80 , 74 , 68 , 62 , 56 , 50 , 44 , 37 , 31 , 25 ,
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19 , 12 , 6 , 0 , -5 , -12 , -18 , -24 , -30 , -37 , -43 , -49 , -55 ,
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-61 , -67 , -73 , -79 , -85 , -91 , -97 , -103 , -109 , -114 , -120 ,
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-125 , -131 , -136 , -141 , -147 , -152 , -157 , -162 , -166 , -171 ,
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-176 , -180 , -185 , -189 , -193 , -197 , -201 , -205 , -208 , -212 ,
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-215 , -219 , -222 , -225 , -228 , -231 , -233 , -236 , -238 , -240 ,
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-242 , -244 , -246 , -248 , -249 , -250 , -252 , -253 , -254 , -254 ,
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-255 , -255 , -255 , -255 , -255 , -255 , -255 , -254 , -254 , -253 ,
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-252 , -251 , -249 , -248 , -246 , -245 , -243 , -241 , -239 , -236 ,
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-234 , -231 , -228 , -226 , -223 , -219 , -216 , -213 , -209 , -206 ,
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-202 , -198 , -194 , -190 , -185 , -181 , -177 , -172 , -167 , -162 ,
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-158 , -153 , -148 , -142 , -137 , -132 , -126 , -121 , -115 , -110 ,
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-104 , -98 , -92 , -86 , -81 , -75 , -69 , -62 , -56 , -50 , -44 ,
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-38 , -32 , -25 , -19 , -13 , -7 ,
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};
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long _CosineTab[256] = {
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256 , 255 , 255 , 255 , 254 , 254 , 253 , 252 , 251 , 249 , 248 , 246 ,
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244 , 243 , 241 , 238 , 236 , 234 , 231 , 228 , 225 , 222 , 219 , 216 ,
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212 , 209 , 205 , 201 , 197 , 193 , 189 , 185 , 181 , 176 , 171 , 167 ,
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162 , 157 , 152 , 147 , 142 , 137 , 131 , 126 , 120 , 115 , 109 , 103 ,
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98 , 92 , 86 , 80 , 74 , 68 , 62 , 56 , 50 , 43 , 37 , 31 , 25 , 19 ,
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12 , 6 , 0 , -6 , -12 , -18 , -24 , -31 , -37 , -43 , -49 , -55 , -61 ,
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-68 , -74 , -80 , -86 , -91 , -97 , -103 , -109 , -114 , -120 , -125 , -131 ,
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-136 , -141 , -147 , -152 , -157 , -162 , -166 , -171 , -176 , -180 ,
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-185 , -189 , -193 , -197 , -201 , -205 , -209 , -212 , -216 , -219 , -222 ,
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-225 , -228 , -231 , -233 , -236 , -238 , -240 , -242 , -244 , -246 ,
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-248 , -249 , -251 , -252 , -253 , -254 , -254 , -255 , -255 , -255 ,
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-255 , -255 , -255 , -255 , -254 , -254 , -253 , -252 , -251 , -249 , -248 ,
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-246 , -245 , -243 , -241 , -239 , -236 , -234 , -231 , -228 , -225 ,
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-222 , -219 , -216 , -213 , -209 , -205 , -202 , -198 , -194 , -190 , -185 ,
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-181 , -176 , -172 , -167 , -162 , -157 , -152 , -147 , -142 , -137 , -132 ,
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-126 , -121 , -115 , -109 , -104 , -98 , -92 , -86 , -80 , -74 , -68 ,
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-62 , -56 , -50 , -44 , -38 , -31 , -25 , -19 , -13 , -6 , 0 , 5 , 11 ,
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18 , 24 , 30 , 36 , 43 , 49 , 55 , 61 , 67 , 73 , 79 , 85 , 91 , 97 , 103 ,
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108 , 114 , 120 , 125 , 131 , 136 , 141 , 146 , 151 , 156 , 161 , 166 ,
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171 , 176 , 180 , 184 , 189 , 193 , 197 , 201 , 205 , 208 , 212 , 215 ,
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219 , 222 , 225 , 228 , 231 , 233 , 236 , 238 , 240 , 242 , 244 , 246 ,
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248 , 249 , 250 , 252 , 253 , 253 , 254 , 255 , 255 , 255 ,
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};
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/***************************************************************
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*
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* Scale_Rotate
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*
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* FUNCTION:
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*
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* Using Bi-Linear Interpolation, draws a scaled and rotated
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* bitmap onto the buffer. No clipping is performed so beware.
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*
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* INPUTS
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*
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* bmp - bitmap to draw
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* pt - desired position of the center
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* scale - 24.8 fixed point scale factor
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* angle - 8bit angle (0=0deg, 255=360deg)
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*
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***************************************************************/
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void GraphicBufferClass::Scale_Rotate(BitmapClass &bmp,TPoint2D const &pt,long scale,unsigned char angle)
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{
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unsigned int scrpos;
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unsigned int temp;
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int i,j; // counter vars
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int pxerror =0; // these three vars will be used in an
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int pyerror =0; // integer difference alg to keep track
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int pixpos =0; // of what pixel to draw.
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unsigned char pixel;
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TPoint2D p0; // "upper left" corner of the rectangle
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TPoint2D p1; // "upper right" corner of the rectangle
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TPoint2D p2; // "lower left" corner of the rectangle
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/*-------------------------------------------------
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Compute three corner points of the rectangle
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-------------------------------------------------*/
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{
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angle &= 0x0FF;
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long c = _CosineTab[angle];
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long s = _SineTab[angle];
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long W = (scale*bmp.Width)>>1;
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long L = (scale*bmp.Height)>>1;
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p0.x = (pt.x + ((( (L*c) >> 8)-((W*s) >> 8)) >> 8));
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p0.y = (pt.y + (((-(L*s) >> 8)-((W*c) >> 8)) >> 8));
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p1.x = (pt.x + ((( (L*c) >> 8)+((W*s) >> 8)) >> 8));
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p1.y = (pt.y + (((-(L*s) >> 8)+((W*c) >> 8)) >> 8));
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p2.x = (pt.x + (((-(L*c) >> 8)-((W*s) >> 8)) >> 8));
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p2.y = (pt.y + ((( (L*s) >> 8)-((W*c) >> 8)) >> 8));
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}
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/*-----------------------------------
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Initialize Breshnam constants
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-----------------------------------*/
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// This breshnam line goes across the FRONT of the rectangle
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// In the bitmap, this will step from left to right
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int f_deltax =(p1.x-p0.x);
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int f_deltay =(p1.y-p0.y);
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int f_error =0;
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int f_xstep =1;
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int f_ystep =Width;
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// This breshnam line goes down the SIDE of the rectangle
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// In the bitmap, this line will step from top to bottom
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int s_deltax =(p2.x-p0.x);
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int s_deltay =(p2.y-p0.y);
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int s_error =0;
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int s_xstep =1;
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int s_ystep =Width;
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/*--------------------------------
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fixup deltas and step values
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--------------------------------*/
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if (f_deltay<0) {
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f_deltay=-f_deltay;
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f_ystep=-Width;
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};
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if (f_deltax<0) {
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f_deltax=-f_deltax;
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f_xstep=-1;
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};
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if (s_deltay<0) {
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s_deltay=-s_deltay;
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s_ystep=-Width;
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};
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if (s_deltax<0) {
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s_deltax=-s_deltax;
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s_xstep=-1;
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};
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scrpos=p0.x+Width*p0.y; //address of initial screen pos.
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temp=scrpos;
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/*---------------------------------------------------------------------
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Now all of the differences, errors, and steps are set up so we can
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begin drawing the bitmap...
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There are two cases here,
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1 - the "Front" line has a slope of < 1.0 (45 degrees)
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2 - the "Front" line has a slope of >= 1.0
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For case 1, we step along the X direction, for case 2, step in y
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---------------------------------------------------------------------*/
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if (f_deltax>f_deltay) { //CASE 1, step front in X, side in Y
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// outer loop steps from top to bottom of the rectangle
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for (j=0;j<s_deltay;j++)
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{
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temp=scrpos;
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// The inner loop steps across the rectangle
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for (i=0;i<f_deltax;i++)
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{
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pixel=bmp.Data[pixpos]; //read pixel
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if (pixel) ((unsigned char *)Get_Buffer())[scrpos]=pixel; //draw if not transparent
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// if (pixel) Data[scrpos]=pixel; //draw if not transparent
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pxerror+=bmp.Width; //update position in bitmap
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while (pxerror>f_deltax)
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{
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pixpos++;
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pxerror-=f_deltax;
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};
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scrpos+=f_xstep; //step to next screen pos
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f_error+=f_deltay;
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if (f_error>f_deltax)
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{
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if (pixel) ((unsigned char *)Get_Buffer())[scrpos]=pixel;
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f_error-=f_deltax;
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scrpos+=f_ystep;
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};
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};
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pxerror=0;
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pixpos-=bmp.Width-1;
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pyerror+=bmp.Height;
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while (pyerror>s_deltay)
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{
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pixpos+=bmp.Width;
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pyerror-=s_deltay;
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};
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f_error=0;
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scrpos=temp;
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scrpos+=s_ystep;
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s_error+=s_deltax;
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if (s_error>s_deltay)
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{
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s_error-=s_deltay;
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scrpos+=s_xstep;
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};
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}
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} else { // CASE 2, Step front line in X, side line in Y
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// outer loop steps from top to bottom of the rectangle
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for (j=0;j<s_deltax;j++)
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{
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temp=scrpos;
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// The inner loop steps across the rectangle
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for (i=0;i<f_deltay;i++)
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{
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pixel=bmp.Data[pixpos]; //read pixel
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if (pixel) ((unsigned char *)Get_Buffer())[scrpos]=pixel; //draw if not transparent
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pxerror+=bmp.Width; //update position in bitmap
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while (pxerror>f_deltay)
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{
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pixpos++;
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pxerror-=f_deltay;
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};
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scrpos+=f_ystep; //step to next screen pos
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f_error+=f_deltax;
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if (f_error>f_deltay)
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{
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if (pixel) ((unsigned char *)Get_Buffer())[scrpos]=pixel;
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f_error-=f_deltay;
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scrpos+=f_xstep;
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};
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};
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pxerror=0;
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pixpos-=bmp.Width-1;
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pyerror+=bmp.Height;
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while (pyerror>s_deltax)
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{
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pixpos+=bmp.Width;
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pyerror-=s_deltax;
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};
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scrpos=temp;
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scrpos+=s_xstep;
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s_error+=s_deltay;
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f_error=0;
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if (s_error>s_deltax)
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{
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s_error-=s_deltax;
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scrpos+=s_ystep;
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};
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}
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}
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}
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