source: trunk/packages/vizservers/nanovis/HeightMap.h @ 2798

Last change on this file since 2798 was 2798, checked in by ldelgass, 9 years ago

Add emacs mode magic line in preparation for indentation cleanup

  • Property svn:eol-style set to native
File size: 3.7 KB
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1/* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
2#ifndef _HEIGHT_MAP_H_
3#define _HEIGHT_MAP_H_
4
5#include <Cg/cgGL.h>
6#include <Cg/cg.h>
7#include <R2/graphics/R2Geometry.h>
8#include "TransferFunction.h"
9#include "NvShader.h"
10#include "Vector3.h"
11#include <RenderContext.h>
12#include "AxisRange.h"
13
14namespace graphics {
15    class RenderContext;
16}
17
18class Grid;
19
20/**
21 *@class HeightMap
22 *@brief Create a surface from height map and line contour of the generated surface
23 */
24
25class HeightMap {
26    unsigned int _vertexBufferObjectID;
27    unsigned int _textureBufferObjectID;
28    int _vertexCount;
29    CGparameter _tfParam;
30    CGparameter _opacityParam;
31    R2Geometry* _contour;
32    R2Geometry* _topContour;
33    TransferFunction* _tfPtr;
34    float _opacity;
35    NvShader* _shader;
36    int *_indexBuffer;
37    int _indexCount;
38    Vector3 _contourColor;
39   
40    bool _contourVisible;
41    bool _topContourVisible;
42    bool _visible;
43   
44    Vector3 _scale;
45    Vector3 _centerPoint;
46    int _xNum, _yNum;           // Number of elements x and y axes in grid.
47    float *_heights;            // Array of original (unscaled) heights
48                                // (y-values)
49public :
50    AxisRange xAxis, yAxis, zAxis, wAxis;
51    static bool update_pending;
52    static double valueMin, valueMax;
53
54    /**
55     *@brief Constructor
56     */
57    HeightMap();
58    /**
59     *@brief Destructor
60     */
61    ~HeightMap();
62
63private :
64    void createIndexBuffer(int xCount, int zCount, float* heights);
65        Vector3* createHeightVertices(float startX, float startY, float endX, float endY, int xCount, int yCount, float* height);
66        void reset();
67public :
68    void render(graphics::RenderContext* renderContext);
69    void render_topview(graphics::RenderContext* renderContext, int render_width, int render_height);
70    /**
71     *@brief Create a height map with heigh values
72     *@param startX a x position of the first height value
73     *@param startY a y position of the first height value
74     *@param endX a x position of the last height value
75     *@param endY a y position of the last height value
76     *@param xCount the number of columns of height values
77     *@param yCount the number of rows of height values
78     *@param height a pointer value adrressing xCount * yCount values of heights
79     */
80    void setHeight(float startX, float startY, float endX, float endY,
81                   int xCount, int yCount, float* height);
82
83    /**
84     *@brief Create a height map with a set of points
85     *@param xCount the number of columns of height values
86     *@param yCount the number of rows of height values
87     */
88    void setHeight(int xCount, int yCount, Vector3* heights);
89
90    void MapToGrid(Grid *gridPtr);
91    /**
92     *@brief Define a color map for color shading of heightmap
93     */
94    void transferFunction(TransferFunction* tfPtr) {
95        _tfPtr = tfPtr;
96    }
97    /**
98     *@brief Get the color map defined for shading of this heightmap
99     */
100    TransferFunction *transferFunction(void) {
101        return _tfPtr;
102    }
103    /**
104     *@brief Set the visibility of the height map
105     */
106    void setVisible(bool visible) {
107        _visible = visible;
108    }
109
110    /**
111     *@brief Return the status of the visibility
112     */
113    bool isVisible() const {
114        return _visible;
115    }
116    /**
117     *@brief Set the visibility of the line contour
118     */
119    void setLineContourVisible(bool visible) {
120        _contourVisible = visible;
121    }
122
123    void setTopLineContourVisible(bool visible) {
124            _topContourVisible = visible;
125    }
126
127    void opacity(float opacity) {
128        _opacity = opacity;
129    }
130    float opacity(void) {
131        return _opacity;
132    }
133    /**
134     *@brief Defind the color of the line contour
135     */
136    void setLineContourColor(float *rgb) {
137        _contourColor.x = rgb[0];
138        _contourColor.y = rgb[1];
139        _contourColor.z = rgb[2];
140    }
141};
142
143#endif
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