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Diffstat (limited to 'Source/Graphics/heightmap.h')
-rw-r--r-- | Source/Graphics/heightmap.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/Source/Graphics/heightmap.h b/Source/Graphics/heightmap.h new file mode 100644 index 00000000..7880d8cb --- /dev/null +++ b/Source/Graphics/heightmap.h @@ -0,0 +1,69 @@ +//----------------------------------------------------------------------------- +// Name: heightmap.h +// Developer: Wolfire Games LLC +// Description: +// License: Read below +//----------------------------------------------------------------------------- +// +// +// Copyright 2022 Wolfire Games LLC +// +// 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 +// +// http://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. +// +//----------------------------------------------------------------------------- +#pragma once + +#include <Internal/integer.h> +#include <Internal/modid.h> + +#include <string> +#include <vector> + +class HeightmapImage +{ +public: + enum HMScale { + DOWNSAMPLED = true, + ORIGINAL_RES = false + }; + + HeightmapImage():width_(0),depth_(0),checksum_(0){} + + bool LoadData(const std::string& fileName, HMScale scaled); + + float GetHeight(int x, int z) const; + float GetHeightXZ(float x, float z) const; + + inline int32_t width() const {return width_;} + inline int32_t depth() const {return depth_;} + inline const std::string& path() const {return rel_path_;} + inline uint16_t checksum() const {return checksum_;} + + ModID modsource_; + +private: + static const int kTerrainDimX = 1024; + static const int kTerrainDimY = 1024; + static const int kTerrainHeightScale = 32; + static const int kHMCacheVersion = 1; + + bool ReadCacheFile(const std::string& path, uint16_t checksum); + void WriteCacheFile(const std::string& path); + bool LoadFromCacheIfAvailable(HMScale scaled); + + int32_t width_; + int32_t depth_; + uint16_t checksum_; + std::vector<float> height_data_; + std::string rel_path_; +}; |