| 131 | } |
| 132 | |
| 133 | void CanvasDrawLineNoAA(int x0, int y0, int x1, int y1, Canvas* ptr) |
| 134 | { |
| 135 | if(!ptr) |
| 136 | { |
| 137 | nullcThrowError("ERROR: Canvas object is nullptr"); |
| 138 | return; |
| 139 | } |
| 140 | bool steep = abs(y1 - y0) > abs(x1 - x0); |
| 141 | if(steep) |
| 142 | { |
| 143 | swap(x0, y0); |
| 144 | swap(x1, y1); |
| 145 | } |
| 146 | if(x0 > x1) |
| 147 | { |
| 148 | swap(x0, x1); |
| 149 | swap(y0, y1); |
| 150 | } |
| 151 | int deltax = x1 - x0; |
| 152 | int deltay = abs(y1 - y0); |
| 153 | int error = deltax / 2; |
| 154 | int ystep = y0 < y1 ? 1 : -1; |
| 155 | int y = y0; |
| 156 | if(x0 < 0) |
| 157 | { |
| 158 | double l = double(-x0) / (x1 - x0); |
| 159 | x0 = 0; |
| 160 | y = int(y0 * (1.0 - l) + y1 * l); |
| 161 | } |
| 162 | if(x0 > (steep ? ptr->height : ptr->width)) |
| 163 | return; |
| 164 | if(x1 > (steep ? ptr->height : ptr->width)) |
| 165 | x1 = steep ? ptr->height : ptr->width; |
| 166 | if(steep) |
| 167 | { |
| 168 | for(int x = x0; x <= x1; x++) |
| 169 | { |
| 170 | if((unsigned)y < (unsigned)ptr->width && (unsigned)x < (unsigned)ptr->height) |
| 171 | CanvasDrawPointInternal(y, x, 1.0, ptr); |
| 172 | error -= deltay; |
| 173 | if(error < 0) |
| 174 | { |
| 175 | y += ystep; |
| 176 | error += deltax; |
| 177 | } |
| 178 | } |
| 179 | }else{ |
| 180 | for(int x = x0; x <= x1; x++) |
| 181 | { |
| 182 | if((unsigned)x < (unsigned)ptr->width && (unsigned)y < (unsigned)ptr->height) |
| 183 | CanvasDrawPointInternal(x, y, 1.0, ptr); |
| 184 | error -= deltay; |
| 185 | if(error < 0) |
| 186 | { |
| 187 | y += ystep; |
| 188 | error += deltax; |
| 189 | } |
| 190 | } |
no test coverage detected