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//-----------------------------------------------------------------------------
// Name: image_sampler.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 <Asset/assetbase.h>
#include <Asset/assetinfobase.h>
#include <Asset/assets.h>
#include <Math/vec4.h>
#include <Images/freeimage_wrapper.h>
#include <vector>
class ImageSampler : public Asset {
struct byte4 {
unsigned char entries[4];
inline unsigned char& operator[](int which){return entries[which];}
};
public:
ImageSampler( AssetManager* owner, uint32_t asset_id );
static AssetType GetType() { return IMAGE_SAMPLER_ASSET; }
static const char* GetTypeName() { return "IMAGE_SAMPLER_ASSET"; }
static bool AssetWarning() { return true; }
int sub_error;
int Load(const std::string& path, uint32_t load_flags);
const char* GetLoadErrorString();
const char* GetLoadErrorStringExtended() { return ""; }
void Unload();
void Reload();
virtual void ReportLoad();
vec4 GetInterpolatedColorUV(float x, float y) const;
bool GetCachePath(std::string* dst);
virtual AssetLoaderBase* NewLoader();
ModID modsource_;
private:
static const int kImageSamplerCacheVersion = 2;
byte4 GetPixel( int x, int y ) const;
void LoadDataFromFIBitmap(FIBITMAP* image);
vec4 GetInterpolatedColor(float x, float y) const;
bool ReadCacheFile(const std::string& path, uint16_t checksum);
void WriteCacheFile(const std::string& path);
std::vector<byte4> pixels_;
int width_, height_;
uint16_t checksum_;
};
typedef AssetRef<ImageSampler> ImageSamplerRef;
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