| 274 | } |
| 275 | |
| 276 | std::string matrix::image_data_string() { |
| 277 | std::stringstream ss; |
| 278 | ss.precision(10); |
| 279 | ss << std::fixed; |
| 280 | auto [h, w] = size(matrices_[0]); |
| 281 | double x_width_ = x_width(); |
| 282 | double y_width_ = y_width(); |
| 283 | for (size_t i = 0; i < w; ++i) { |
| 284 | for (size_t j = 0; j < h; ++j) { |
| 285 | ss << " " << x_ + x_width_ * i; |
| 286 | ss << " " << y_ + y_width_ * j; |
| 287 | ss << " " << static_cast<int>(matrices_[0][j][i]); |
| 288 | if (matrices_.size() >= 3) { |
| 289 | ss << " " << static_cast<int>(matrices_[1][j][i]); |
| 290 | ss << " " << static_cast<int>(matrices_[2][j][i]); |
| 291 | } |
| 292 | if (has_alpha()) { |
| 293 | ss << " " |
| 294 | << static_cast<int>( |
| 295 | (1 - alpha_) * |
| 296 | (is_rgba() ? matrices_[3][j][i] : 255.)); |
| 297 | } |
| 298 | ss << "\n"; |
| 299 | } |
| 300 | } |
| 301 | ss << " e\n"; |
| 302 | return ss.str(); |
| 303 | } |
| 304 | |
| 305 | std::string matrix::data_string() { |
| 306 | return matrices_.size() > 1 ? image_data_string() |