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38 lines
914 B
C++
38 lines
914 B
C++
#ifndef TERRAIN_HEIGHTMAP_H
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#define TERRAIN_HEIGHTMAP_H
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/*
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Generic interface for a structure holding heightmap data.
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A HeightMap returns information about landscape data in the form of
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a regular grid of float heights.
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*/
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namespace Terrain
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{
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struct HeightMap
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{
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// Get height from grid position, counted from 0 to getNumX/Y().
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virtual float getHeight(int x, int y) = 0;
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// Get heigth from vertex index, assumed to be y*getNumX() + x.
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virtual float getHeight(int index) = 0;
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virtual float getMinX() = 0;
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virtual float getMaxX() = 0;
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virtual float getMinY() = 0;
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virtual float getMaxY() = 0;
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virtual int getNumX() = 0;
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virtual int getNumY() = 0;
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// True if the given coordinate is within the grid
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bool isWithin(float x, float y)
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{
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return
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x >= getMinX() && x < getMaxX() &&
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y >= getMinY() && y < getMaxY();
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}
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};
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}
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#endif
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