Lucas de Vries
45 lines
872 B
C++
45 lines
872 B
C++
#pragma once
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#include "vec2.h"
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#include "vec3.h"
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#include "line3d.h"
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#include <vector>
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/*
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* An elevation map takes an irregularly spaced
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* set of points, precalculates a regular grid of
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* smoothly interpolated heights and then allows
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* for elevation lookup for arbitrary locations.
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*/
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class ElevationMap {
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public:
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struct Point {
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vec3d center;
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double radius;
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};
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std::vector<Point> points;
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bool generated;
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float* grid;
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vec3d gridStart;
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vec2d gridSize;
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vec2d gridInterval;
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vec2i gridResolution;
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double minHeight;
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double maxHeight;
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void clear();
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void addPoint(const vec3d& point, double radius = 0.0);
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void generate(const vec2d& interval, double power = 2.0);
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double lookup(int x, int y);
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double get(vec2d point);
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double get(double x, double y);
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bool getClosestPoint(const line3dd& line, vec3d& point);
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ElevationMap();
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~ElevationMap();
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};
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