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49 lines
1.1 KiB
49 lines
1.1 KiB
#include "Texture.h"
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#include "util.h"
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TextureRGB::TextureRGB()
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{
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mImageFileContent = nullptr;
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mRGBPixel = nullptr;
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mWidth = 0;
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mHeight = 0;
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}
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TextureRGB::~TextureRGB()
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{
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if (mImageFileContent) {
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delete[] mImageFileContent;
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}
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}
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void TextureRGB::Set(const char * image_path)
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{
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int file_size = 0;
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mImageFileContent = LoadFileContent(image_path, file_size);
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mRGBPixel = DecodeBMP(mImageFileContent, mWidth, mHeight);
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}
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Vector3 TextureRGB::Sample(float u, float v)
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{
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int x = int(u * mWidth);
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int y = int(v * mHeight);
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x = x < 0 ? 0 : x;
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y = y < 0 ? 0 : y;
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x = x > (mWidth - 1) ? (mWidth - 1) : x;
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y = y > (mHeight - 1) ? (mHeight - 1) : y;
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int pixel_data_start_index = 3 * (x + y * mWidth);
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float r = float(mRGBPixel[pixel_data_start_index]) / 255.0f;
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float g = float(mRGBPixel[pixel_data_start_index + 1]) / 255.0f;
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float b = float(mRGBPixel[pixel_data_start_index + 2]) / 255.0f;
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return Vector3(r, g, b);
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}
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TextureSolidColor::TextureSolidColor(const Vector3 & color)
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{
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mSolidColor = color;
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}
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Vector3 TextureSolidColor::Sample(float u, float v)
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{
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return mSolidColor;
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}
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