91 lines
2.4 KiB
C++
91 lines
2.4 KiB
C++
#pragma once
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#include "definition_global.h"
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#include "DefinitionNode.h"
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namespace paysages {
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namespace definition {
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/**
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* Grid of values that can be painted using a brush.
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*
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* This may be useful for terrain altitude, texture presence...
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*
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* Grid cells are considered to be 1.0-sized.
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*/
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class DEFINITIONSHARED_EXPORT PaintedGrid : public DefinitionNode {
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public:
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PaintedGrid(DefinitionNode *parent = 0);
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virtual ~PaintedGrid();
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virtual void copy(DefinitionNode *destination) const override;
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virtual void save(PackStream *stream) const override;
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virtual void load(PackStream *stream) override;
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/**
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* Get the interpolated value at a given location.
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*
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* Returns true if the value is user-specified in the grid, false otherwise.
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*/
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bool getInterpolatedValue(double x, double y, double *result) const;
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/**
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* Get the grid-stored value at a grid point.
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*
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* Returns true if the value is user-specified in the grid, false otherwise.
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*/
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bool getGridValue(int x, int y, double *result) const;
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/**
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* Get the final interpolated value, using initial value as fallback.
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*/
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double getFinalValue(double x, double y) const;
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/**
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* Returns true if the grid has any painting.
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*/
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bool hasPainting() const;
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/**
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* Returns true if a grid point is user-specified, false if it's the initial value.
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*/
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bool isPainted(int x, int y) const;
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/**
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* Get the number of bytes used by this grid.
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*/
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unsigned long getMemoryStats() const;
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/**
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* Clear all painting and reset the initial value everywhere.
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*/
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virtual void clearPainting();
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/**
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* Apply a brush stroke at a grid location (locating the brush center).
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*/
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virtual void applyBrush(const PaintedGridBrush &brush, double x, double y, double force, bool commit = false);
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/**
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* Commit previous brush strokes.
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*/
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virtual void endBrushStroke();
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/**
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* Virtual method that can be reimplemented to provide the initial value at a grid location.
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*
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* By default, the initial value will be 0.0.
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*/
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virtual double getInitialValue(double x, double y) const;
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private:
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double *getDataPointer(PaintedGridData *data, int x, int y, PaintedGridData *fallback, bool grow) const;
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private:
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PaintedGridData *merged_data;
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PaintedGridData *brush_data;
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};
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}
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}
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