📄 lcd.lst
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935
936 //* 计算出椭圆中心点坐标 *
937 center_x = (pEllipse->xs + pEllipse->xe) >> 1;
938 center_y = (pEllipse->ys + pEllipse->ye) >> 1;
939
940 //* 计算出椭圆的半径，x轴半径和y轴半径 *
941 if(pEllipse->xs > pEllipse->xe)
942 { radius_x = (pEllipse->xs - pEllipse->xe) >> 1;
943 }
944 else
945 { radius_x = (pEllipse->xe - pEllipse->xs) >> 1;
946 }
947 if(pEllipse->ys > pEllipse->ye)
948 { radius_y = (pEllipse->ys - pEllipse->ye) >> 1;
949 }
950 else
951 { radius_y = (pEllipse->ye - pEllipse->ys) >> 1;
952 }
953
954 //* 计算半径平方值 *
955 radius_xx = radius_x * radius_x;
956 radius_yy = radius_y * radius_y;
957
958 //* 计算半径平方值乘2值 *
959 radius_xx2 = radius_xx<<1;
960 radius_yy2 = radius_yy<<1;
961
962 //* 初始化画图变量 *
963 xx = 0;
964 yy = radius_y;
965
966 di = radius_yy2 + radius_xx - radius_xx2*radius_y ; // 初始化决策变量
967
968 //* 计算出椭圆y轴上的两个端点坐标，作为作图起点 *
969 draw_x0 = draw_x1 = draw_x2 = draw_x3 = center_x;
970 draw_y0 = draw_y1 = center_y + radius_y;
971 draw_y2 = draw_y3 = center_y - radius_y;
972
973 point.x = draw_x0;
974 point.y = draw_y0;
975 LCDDrawPoint( &point );
976 point.x = draw_x2;
977 point.y = draw_y2;
978 LCDDrawPoint( &point ); // 画y轴上的两个端点
979
980 while( (radius_yy*xx) < (radius_xx*yy) )
C51 COMPILER V9.00 LCD 08/26/2012 13:41:40 PAGE 17
981 { if(di<0)
982 { di+= radius_yy2*(2*xx+3);
983 }
984 else
985 { di += radius_yy2*(2*xx+3) + 4*radius_xx - 4*radius_xx*yy;
986
987 yy--;
988 draw_y0--;
989 draw_y1--;
990 draw_y2++;
991 draw_y3++;
992 }
993
994 xx ++; // x轴加1
995
996 draw_x0++;
997 draw_x1--;
998 draw_x2++;
999 draw_x3--;
1000
1001 point.x = draw_x0;
1002 point.y = draw_y0;
1003 LCDDrawPoint( &point );
1004 point.x = draw_x1;
1005 point.y = draw_y1;
1006 LCDDrawPoint( &point );
1007 point.x = draw_x2;
1008 point.y = draw_y2;
1009 LCDDrawPoint( &point );
1010 point.x = draw_x3;
1011 point.y = draw_y3;
1012 LCDDrawPoint( &point );
1013 }
1014
1015 di = radius_xx2*(yy-1)*(yy-1) + radius_yy2*xx*xx + radius_yy + radius_yy2*xx - radius_xx2*radius_yy;
1016 while(yy>=0)
1017 { if(di<0)
1018 { di+= radius_xx2*3 + 4*radius_yy*xx + 4*radius_yy - 2*radius_xx2*yy;
1019
1020 xx ++; // x轴加1
1021 draw_x0++;
1022 draw_x1--;
1023 draw_x2++;
1024 draw_x3--;
1025 }
1026 else
1027 { di += radius_xx2*3 - 2*radius_xx2*yy;
1028 }
1029
1030 yy--;
1031 draw_y0--;
1032 draw_y1--;
1033 draw_y2++;
1034 draw_y3++;
1035
1036 point.x = draw_x0;
1037 point.y = draw_y0;
1038 LCDDrawPoint( &point );
1039 point.x = draw_x1;
1040 point.y = draw_y1;
1041 LCDDrawPoint( &point );
1042 point.x = draw_x2;
C51 COMPILER V9.00 LCD 08/26/2012 13:41:40 PAGE 18
1043 point.y = draw_y2;
1044 LCDDrawPoint( &point );
1045 point.x = draw_x3;
1046 point.y = draw_y3;
1047 LCDDrawPoint( &point );
1048 }
1049 } */
1050
1051 /*================================================================================
1052 绘制实心椭圆
1053 ================================================================================*/
1054 /*void GUI_DrawEllipseFill( ELLIPSE* pEllipse )
1055 {
1056 INT32S draw_x0, draw_y0; // 刽图点坐标变量
1057 INT32S draw_x1, draw_y1;
1058 INT32S draw_x2, draw_y2;
1059 INT32S draw_x3, draw_y3;
1060 INT32S xx, yy; // 画图控制变量
1061
1062 INT32S center_x, center_y; // 椭圆中心点坐标变量
1063 INT32S radius_x, radius_y; // 椭圆的半径，x轴半径和y轴半径
1064 INT32S radius_xx, radius_yy; // 半径乘平方值
1065 INT32S radius_xx2, radius_yy2; // 半径乘平方值的两倍
1066 INT32S di; // 定义决策变量
1067
1068 POINT point;
1069 LINE line;
1070
1071 point.Color = pEllipse->Color;
1072 line.Color = pEllipse->Color;
1073
1074 //* 参数过滤 *
1075 if( (pEllipse->xs==pEllipse->xe) ||
1076 (pEllipse->ys==pEllipse->ye) ) return;
1077
1078 //* 计算出椭圆中心点坐标 *
1079 center_x = (pEllipse->xs + pEllipse->xe) >> 1;
1080 center_y = (pEllipse->ys + pEllipse->ye) >> 1;
1081
1082 //* 计算出椭圆的半径，x轴半径和y轴半径 *
1083 if(pEllipse->xs > pEllipse->xe)
1084 {
1085 radius_x = (pEllipse->xs - pEllipse->xe) >> 1;
1086 }
1087 else
1088 {
1089 radius_x = (pEllipse->xe - pEllipse->xs) >> 1;
1090 }
1091 if(pEllipse->ys > pEllipse->ye)
1092 {
1093 radius_y = (pEllipse->ys - pEllipse->ye) >> 1;
1094 }
1095 else
1096 {
1097 radius_y = (pEllipse->ye - pEllipse->ys) >> 1;
1098 }
1099
1100 //* 计算半径乘平方值 *
1101 radius_xx = radius_x * radius_x;
1102 radius_yy = radius_y * radius_y;
1103
1104 //* 计算半径乘4值 *
C51 COMPILER V9.00 LCD 08/26/2012 13:41:40 PAGE 19
1105 radius_xx2 = radius_xx<<1;
1106 radius_yy2 = radius_yy<<1;
1107
1108 //* 初始化画图变量 *
1109 xx = 0;
1110 yy = radius_y;
1111
1112 di = radius_yy2 + radius_xx - radius_xx2*radius_y ; // 初始化决策变量
1113
1114 //* 计算出椭圆y轴上的两个端点坐标，作为作图起点 *
1115 draw_x0 = draw_x1 = draw_x2 = draw_x3 = center_x;
1116 draw_y0 = draw_y1 = center_y + radius_y;
1117 draw_y2 = draw_y3 = center_y - radius_y;
1118
1119 point.x = draw_x0;
1120 point.y = draw_y0;
1121 LCDDrawPoint( &point );
1122 point.x = draw_x2;
1123 point.y = draw_y2;
1124 LCDDrawPoint( &point );// 画y轴上的两个端点
1125
1126 while( (radius_yy*xx) < (radius_xx*yy) )
1127 { if(di<0)
1128 { di+= radius_yy2*(2*xx+3);
1129 }
1130 else
1131 { di += radius_yy2*(2*xx+3) + 4*radius_xx - 4*radius_xx*yy;
1132
1133 yy--;
1134 draw_y0--;
1135 draw_y1--;
1136 draw_y2++;
1137 draw_y3++;
1138 }
1139
1140 xx ++; // x轴加1
1141
1142 draw_x0++;
1143 draw_x1--;
1144 draw_x2++;
1145 draw_x3--;
1146
1147 point.x = draw_x0;
1148 point.y = draw_y0;
1149 LCDDrawPoint( &point );
1150 point.x = draw_x1;
1151 point.y = draw_y1;
1152 LCDDrawPoint( &point );
1153 point.x = draw_x2;
1154 point.y = draw_y2;
1155 LCDDrawPoint( &point );
1156 point.x = draw_x3;
1157 point.y = draw_y3;
1158 LCDDrawPoint( &point );
1159
1160 //* 若y轴已变化，进行填充 *
1161 if(di>=0)
1162 {
1163 line.xs = draw_x0;
1164 line.xe = draw_x1;
1165 line.ys = line.ye = draw_y0;
1166 LCDDrawHRLine( &line );
C51 COMPILER V9.00 LCD 08/26/2012 13:41:40 PAGE 20
1167 line.xs = draw_x2;
1168 line.xe = draw_x3;
1169 line.ys = line.ye = draw_y2;
1170 LCDDrawHRLine( &line );
1171
1172 }
1173 }
1174
1175 di = radius_xx2*(yy-1)*(yy-1) + radius_yy2*xx*xx + radius_yy +
1176 radius_yy2*xx - radius_xx2*radius_yy;
1177 while(yy>=0)
1178 { if(di<0)
1179 { di+= radius_xx2*3 + 4*radius_yy*xx + 4*radius_yy - 2*radius_xx2*yy;
1180
1181 xx ++; // x轴加1
1182 draw_x0++;
1183 draw_x1--;
1184 draw_x2++;
1185 draw_x3--;
1186 }
1187 else
1188 { di += radius_xx2*3 - 2*radius_xx2*yy;
1189 }
1190
1191 yy--;
1192 draw_y0--;
1193 draw_y1--;
1194 draw_y2++;
1195 draw_y3++;
1196
1197 point.x = draw_x0;
1198 point.y = draw_y0;
1199 LCDDrawPoint( &point );
1200 point.x = draw_x1;
1201 point.y = draw_y1;
1202 LCDDrawPoint( &point );
1203 point.x = draw_x2;
1204 point.y = draw_y2;
1205 LCDDrawPoint( &point );
1206 point.x = draw_x3;
1207 point.y = draw_y3;
1208 LCDDrawPoint( &point );
1209
1210 //* y轴已变化，进行填充 *
1211 line.xs = draw_x0;
1212 line.xe = draw_x1;
1213 line.ys = line.ye = draw_y0;
1214 LCDDrawHRLine( &line );
1215 line.xs = draw_x2;
1216 line.xe = draw_x3;
1217 line.ys = line.ye = draw_y2;
1218 LCDDrawHRLine( &line );
1219 }
1220 } */
1221 /*================================================================================
1222 初始化背景颜色
1223 ================================================================================*/
1224 /*void GUI_Inital( TCOLOR Color )
1225 {
1226 DOLLOP dollop;
1227
1228 dollop.xs = 0;
C51 COMPILER V9.00 LCD 08/26/2012 13:41:40 PAGE 21
1229 dollop.xe = GUI_LCM_XMAX;
1230 dollop.ys = 0;
1231 dollop.ye = GUI_LCM_YMAX;
1232 dollop.Color = Color;
1233
1234 LCDDrawDollop( &dollop );
1235 }*/
MODULE INFORMATION: STATIC OVERLAYABLE
CODE SIZE = 2527 ----
CONSTANT SIZE = ---- ----
XDATA SIZE = ---- ----
PDATA SIZE = ---- ----
DATA SIZE = ---- 182
IDATA SIZE = ---- ----
BIT SIZE = ---- ----
END OF MODULE INFORMATION.
C51 COMPILATION COMPLETE. 4 WARNING(S), 0 ERROR(S)
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