| // Copyright 2022 The Pigweed Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| // use this file except in compliance with the License. You may obtain a copy of |
| // the License at |
| // |
| // https://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| // License for the specific language governing permissions and limitations under |
| // the License. |
| #include "pw_draw/sprite_sheet.h" |
| |
| namespace pw::draw { |
| |
| color_rgb565_t SpriteSheet::GetColor(int x, int y, int sprite_index = 0) { |
| int start_y = sprite_index * height + y; |
| return _data[start_y * width + x]; |
| } |
| |
| void SpriteSheet::SetIndex(int index) { current_index = index; } |
| |
| void SpriteSheet::RotateIndexLoop() { |
| current_index = (current_index + 1) % count; |
| } |
| |
| void SpriteSheet::RotateIndexPingPong() { |
| current_index += index_direction; |
| if (current_index == 0 || current_index == count - 1) { |
| index_direction *= -1; |
| } |
| } |
| |
| } // namespace pw::draw |
