[5942] | 1 | /* |
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| 2 | orxonox - the future of 3D-vertical-scrollers |
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| 3 | |
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| 4 | Copyright (C) 2004 orx |
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| 5 | |
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| 6 | This program is free software; you can redistribute it and/or modify |
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| 7 | it under the terms of the GNU General Public License as published by |
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| 8 | the Free Software Foundation; either version 2, or (at your option) |
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| 9 | any later version. |
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| 10 | |
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| 11 | ### File Specific: |
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[6956] | 12 | main-programmer: bottac@ee.ethz.ch |
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[5942] | 13 | */ |
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| 14 | |
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| 15 | #include "height_map.h" |
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| 16 | #include "model.h" |
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[5967] | 17 | #include "texture.h" |
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| 18 | #include "vector.h" |
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[6956] | 19 | #include "material.h" |
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| 20 | #include "p_node.h" |
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| 21 | #include "state.h" |
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[7193] | 22 | #include "util/loading/resource_manager.h" |
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[5967] | 23 | #include "debug.h" |
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| 24 | |
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| 25 | // INCLUDING SDL_Image |
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| 26 | #ifdef HAVE_SDL_IMAGE_H |
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| 27 | #include <SDL_image.h> |
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| 28 | #else |
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| 29 | #include <SDL/SDL_image.h> |
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| 30 | #endif |
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| 31 | |
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[7014] | 32 | Tile::Tile(int i1, int j1, int i2, int j2, HeightMap* hm ) |
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[5942] | 33 | { |
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[6956] | 34 | |
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| 35 | PRINTF(0)("Tile Constructor\n"); |
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| 36 | highResModel = new VertexArrayModel(); |
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| 37 | lowResModel = new VertexArrayModel(); |
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| 38 | |
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| 39 | this->load(i1,j1,i2,j2,hm,highResModel,4); |
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| 40 | this->load(i1,j1,i2,j2,hm,lowResModel, 8); |
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| 41 | } |
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| 42 | |
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| 43 | Tile::Tile() |
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| 44 | { |
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| 45 | PRINTF(0)("ooops *********************************************************************************************************************************************************************************************************** \n"); |
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| 46 | } |
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| 47 | |
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| 48 | Tile::~Tile() |
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| 49 | { |
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| 50 | delete highResModel; |
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| 51 | delete lowResModel; |
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| 52 | } |
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| 53 | |
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| 54 | void Tile::draw() |
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| 55 | { |
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[7014] | 56 | // This Draws the LOD's |
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| 57 | //FIXME |
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| 58 | float cameraDistance = (State::getCameraNode()->getAbsCoor() - Vector(this->x, hmref->offsetY , this->z) ).len(); |
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| 59 | if(cameraDistance < 0) cameraDistance = -cameraDistance; |
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[6956] | 60 | if(cameraDistance > 5000 ) |
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| 61 | { |
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| 62 | return; |
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| 63 | } |
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| 64 | else if (cameraDistance >= 1000 ) |
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| 65 | { |
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| 66 | this->drawLowRes(); |
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| 67 | } |
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[7014] | 68 | else |
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[6956] | 69 | { |
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| 70 | this->drawHighRes(); |
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| 71 | } |
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| 72 | } |
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| 73 | |
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| 74 | void Tile::drawHighRes() |
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| 75 | { |
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| 76 | highResModel->draw(); |
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| 77 | } |
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| 78 | |
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| 79 | void Tile::drawLowRes() |
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| 80 | { |
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| 81 | lowResModel->draw(); |
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| 82 | } |
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| 83 | |
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| 84 | /* |
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| 85 | */ |
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| 86 | void Tile::load(int i1, int j1, int i2, int j2, HeightMap* hm, VertexArrayModel* model, int Res) |
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| 87 | { |
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| 88 | |
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[7014] | 89 | #define heightMap hm->heightMap |
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| 90 | #define colours hm->colours |
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| 91 | #define scaleX hm->scaleX |
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| 92 | #define scaleY hm->scaleY |
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| 93 | #define scaleZ hm->scaleZ |
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| 94 | #define shiftX hm->shiftX |
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| 95 | #define shiftY hm->shiftY |
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| 96 | #define shiftZ hm->shiftZ |
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| 97 | #define normalVectorField hm->normalVectorField |
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[6956] | 98 | |
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[7014] | 99 | hmref = hm; // FIXME |
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| 100 | |
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| 101 | this->x = hm->offsetX + (heightMap->h - ((i1+i2)/2))*scaleX; |
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| 102 | this->z = hm->offsetZ + ((j1 + j2 )/2 ) * scaleZ; |
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| 103 | |
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| 104 | int sampleRate = Res; |
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| 105 | |
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| 106 | float height = 0; |
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| 107 | int offset = 0; |
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| 108 | |
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| 109 | float r = 0.0; |
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| 110 | float g = 0.0; |
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| 111 | float b = 0.0; |
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| 112 | |
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| 113 | |
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| 114 | |
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| 115 | |
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[6956] | 116 | if(heightMap != NULL && heightMap->format->BitsPerPixel == 8 ) |
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| 117 | |
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[7014] | 118 | SDL_LockSurface(heightMap); |
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| 119 | SDL_LockSurface(hm->colourMap); |
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[6956] | 120 | |
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[7014] | 121 | for(int i = i1 ; i <= i2 ; i +=sampleRate) |
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| 122 | { |
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| 123 | int w = 0; |
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[6956] | 124 | |
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| 125 | |
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| 126 | |
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[7014] | 127 | if(hm->hasColourMap) |
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| 128 | { |
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| 129 | r = colours[(3*w+2 + 3*i*(heightMap->w )) ]; |
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| 130 | g = colours[(3*w+1 + 3*i*(heightMap->w)) ]; |
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| 131 | b = colours[(3*w+0 + 3*i*(heightMap->w))]; |
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| 132 | } |
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| 133 | |
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| 134 | w = j1; |
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| 135 | model->addVertex(scaleX*(heightMap->h -i)+ shiftX,shiftY,scaleZ*(w)+ shiftZ); // Top Right |
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| 136 | model->addNormal(normalVectorField[i % heightMap->h][w % heightMap->w].y,normalVectorField[i % heightMap->h][w % heightMap->w].z,normalVectorField[i % heightMap->h][w % heightMap->w].x); |
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| 137 | model->addTexCoor((float)(j1-sampleRate) /(texRate), (float)(i %heightMap->h)/(texRate)); |
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| 138 | |
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| 139 | model->addColor(r/255.0,g/255.0,b/255.0); |
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| 140 | |
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| 141 | for(int j = j1 ; j <= j2 ; j += sampleRate) |
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| 142 | { |
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| 143 | |
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| 144 | |
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| 145 | // To be fixed |
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| 146 | if(hm->hasColourMap) |
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| 147 | { |
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| 148 | r = colours[(3*j+2 + 3*i*(heightMap->w )) ]; |
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| 149 | g = colours[(3*j+1 + 3*i*(heightMap->w)) ]; |
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| 150 | b = colours[(3*j+0 + 3*i*(heightMap->w))]; |
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| 151 | } |
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| 152 | height = (float)(unsigned char) hm->heights[(j +sampleRate+ i*(heightMap->w )) ]; |
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| 153 | height += (float)(unsigned char) hm->heights[(j+ 1 + sampleRate + (i+1)*(heightMap->w )) ]; |
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| 154 | height += (float) (unsigned char) hm->heights[(j -1+ sampleRate + (i+1)*(heightMap->w ))]; |
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| 155 | height += (float)(unsigned char)hm->heights[(j +sampleRate+ (i+2)*(heightMap->w )) ]; |
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| 156 | height += (float)(unsigned char)hm->heights[(j+sampleRate + (i)*(heightMap->w )) ]; |
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| 157 | height=height/5.0; |
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| 158 | |
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| 159 | model->addVertex(scaleX*(heightMap->h -i) + shiftX ,((double)(height)*scaleY) + shiftY ,scaleZ*(j) + shiftZ); // Top Right |
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| 160 | model->addNormal(normalVectorField[i % heightMap->h][j % heightMap->w].y,normalVectorField[i % heightMap->h][j % heightMap->w].z,normalVectorField[i % heightMap->h][j % heightMap->w].x); |
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| 161 | model->addTexCoor((float)(j) /(texRate), (float)(i %heightMap->h)/(texRate)); |
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| 162 | |
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| 163 | //PRINTF(0)("TexCoord: %f %f \n",(float)j / 100.0, (float)(i %heightMap->h)/100.0); |
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| 164 | |
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| 165 | model->addColor(r/255.0,g/255.0,b/255.0); |
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| 166 | w = j; |
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| 167 | } |
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| 168 | |
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| 169 | |
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| 170 | model->addVertex(scaleX*(heightMap->h -i)+ shiftX,shiftY,scaleZ*(w)+ shiftZ); // Top Right |
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| 171 | model->addNormal(normalVectorField[i % heightMap->h][w % heightMap->w].y,normalVectorField[i % heightMap->h][w % heightMap->w].z,normalVectorField[i% heightMap->h][w % heightMap->w].x); |
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| 172 | model->addTexCoor((float)(j2+sampleRate) /(texRate), (float)(i %heightMap->h)/(texRate)); |
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| 173 | model->addColor(r/255.0,g/255.0,b/255.0); |
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| 174 | |
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| 175 | } |
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| 176 | |
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| 177 | |
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| 178 | |
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| 179 | |
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| 180 | |
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| 181 | SDL_UnlockSurface(heightMap); |
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| 182 | int cnt = 0; |
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| 183 | for(int i = i1 ; i < i2 ; i +=sampleRate) |
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| 184 | { |
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| 185 | |
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| 186 | for(int j = j1-sampleRate ; j < j2 + 2*sampleRate ; j += sampleRate) |
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| 187 | { |
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| 188 | |
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| 189 | model->addIndice(cnt); |
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| 190 | model->addIndice(cnt + (j2 -j1 + 3* sampleRate )/ sampleRate ); |
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| 191 | cnt++; |
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| 192 | |
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| 193 | } |
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| 194 | |
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| 195 | |
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| 196 | |
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| 197 | model->newStripe(); |
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| 198 | |
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| 199 | |
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| 200 | } |
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| 201 | cnt += (j2 -j1 + 3* sampleRate)/ sampleRate; |
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| 202 | |
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| 203 | for(int j = j1 ; j <= j2 ; j += sampleRate) |
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| 204 | { |
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| 205 | int i = i1; |
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| 206 | |
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| 207 | // To be fixed |
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| 208 | if(hm->hasColourMap) |
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| 209 | { |
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| 210 | r = (float)colours[(3*j+2 + 3*i*(heightMap->w )) ]; |
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| 211 | g = (float)colours[(3*j+1 + 3*i*(heightMap->w)) ]; |
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| 212 | b = (float)colours[(3*j+0 + 3*i*(heightMap->w))]; |
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| 213 | } |
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| 214 | |
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| 215 | model->addVertex(scaleX*(heightMap->h -i) + shiftX , shiftY ,scaleZ*(j) + shiftZ); // Top Right |
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| 216 | model->addNormal(normalVectorField[i % heightMap->h][j % heightMap->w].y,normalVectorField[i % heightMap->h][j % heightMap->w].z,normalVectorField[i % heightMap->h][j % heightMap->w].x); |
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| 217 | model->addTexCoor((float)j /(texRate), (float)((i - sampleRate) %heightMap->h)/(texRate)); |
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| 218 | model->addColor(r/255.0,g/255.0,b/255.0); |
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| 219 | |
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| 220 | } |
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| 221 | |
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| 222 | for(int j = j1 ; j <= j2 ; j += sampleRate) |
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| 223 | { |
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| 224 | int i = i1; |
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| 225 | height = (float)(unsigned char) hm->heights[(j +sampleRate+ i*(heightMap->w )) ]; |
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| 226 | height += (float)(unsigned char) hm->heights[(j+ 1 + sampleRate + (i+1)*(heightMap->w )) ]; |
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| 227 | height += (float) (unsigned char) hm->heights[(j -1+ sampleRate + (i+1)*(heightMap->w ))]; |
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| 228 | height += (float)(unsigned char)hm->heights[(j +sampleRate+ (i+2)*(heightMap->w )) ]; |
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| 229 | height += (float)(unsigned char)hm->heights[(j+sampleRate + (i)*(heightMap->w )) ]; |
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| 230 | height=height/5.0; |
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| 231 | |
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| 232 | model->addVertex(scaleX*(heightMap->h -i) + shiftX , ((double)(height)*scaleY) +shiftY ,scaleZ*(j) + shiftZ); // Top Right |
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| 233 | model->addNormal(normalVectorField[i % heightMap->h][j % heightMap->w].y,normalVectorField[i % heightMap->h][j% heightMap->w].z,normalVectorField[i%heightMap->h][j%heightMap->w].x); |
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| 234 | model->addTexCoor((float)j /(texRate), (float)(i %heightMap->h)/(texRate)); |
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| 235 | model->addColor(r/255.0,g/255.0,b/255.0); |
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| 236 | |
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| 237 | } |
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| 238 | |
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| 239 | |
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| 240 | |
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| 241 | for(int j = j1 ; j <= j2 ; j += sampleRate) |
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| 242 | { |
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| 243 | int i = i2; |
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| 244 | |
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| 245 | // To be fixed |
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| 246 | if(hm->hasColourMap) |
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| 247 | { |
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| 248 | r = (float)colours[3*j+2 + 3*i*(heightMap->w )]; |
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| 249 | g = (float)colours[3*j+1 + 3*i*(heightMap->w)]; |
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| 250 | b = (float)colours[3*j+0 + 3*i*(heightMap->w)]; |
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| 251 | } |
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| 252 | |
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| 253 | model->addVertex(scaleX*(heightMap->h -i) + shiftX , shiftY ,scaleZ*(j) + shiftZ); // Top Right |
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| 254 | model->addNormal(normalVectorField[i%heightMap->h][j%heightMap->w].y,normalVectorField[i%heightMap->h][j%heightMap->w].z,normalVectorField[i%heightMap->h][j%heightMap->w].x); |
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| 255 | model->addTexCoor((float)j /(texRate), (float)((i+ sampleRate) %heightMap->h)/(texRate)); |
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| 256 | model->addColor(r/255.0,g/255.0,b/255.0); |
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| 257 | |
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| 258 | } |
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| 259 | |
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| 260 | |
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| 261 | for(int j = j1 ; j <= j2 ; j += sampleRate) |
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| 262 | { |
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| 263 | int i = i2; |
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| 264 | height = (float)(unsigned char) hm->heights[(j +sampleRate+ i*(heightMap->w )) ]; |
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| 265 | height += (float)(unsigned char) hm->heights[(j+ 1 + sampleRate + (i+1)*(heightMap->w )) ]; |
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| 266 | height += (float) (unsigned char) hm->heights[(j -1+ sampleRate + (i+1)*(heightMap->w ))]; |
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| 267 | height += (float)(unsigned char)hm->heights[(j +sampleRate+ (i+2)*(heightMap->w ))]; |
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| 268 | height += (float)(unsigned char)hm->heights[(j+sampleRate + (i)*(heightMap->w )) ]; |
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| 269 | height=height/5.0; |
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| 270 | model->addVertex(scaleX*(heightMap->h -i) + shiftX , ((double)(height)*scaleY) +shiftY ,scaleZ*(j) + shiftZ); // Top Right |
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| 271 | model->addNormal(normalVectorField[i%heightMap->h][j%heightMap->w].y,normalVectorField[i%heightMap->h][j%heightMap->w].z,normalVectorField[i%heightMap->h][j%heightMap->w].x); |
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| 272 | model->addTexCoor((float)j /(texRate), (float)(i %heightMap->h)/(texRate)); |
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| 273 | model->addColor(r/255.0,g/255.0,b/255.0); |
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| 274 | |
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| 275 | } |
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| 276 | |
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| 277 | |
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| 278 | |
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| 279 | |
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| 280 | // link Boarder Stripe |
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| 281 | for(int j = j1-sampleRate ; j < j2 ; j += sampleRate) |
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| 282 | { |
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| 283 | |
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| 284 | model->addIndice(cnt); |
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| 285 | model->addIndice(cnt + (j2 -j1 + sampleRate )/ sampleRate ); |
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| 286 | cnt++; |
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| 287 | |
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| 288 | } |
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| 289 | |
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| 290 | cnt++; |
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| 291 | |
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| 292 | model->newStripe(); |
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| 293 | |
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| 294 | |
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| 295 | |
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| 296 | |
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| 297 | |
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| 298 | cnt += (j2-j1)/ sampleRate; |
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| 299 | |
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| 300 | // link 2nd BoarderStripe |
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| 301 | for(int j = j1-sampleRate ; j < j2 ; j += sampleRate) |
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| 302 | { |
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| 303 | |
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| 304 | model->addIndice(cnt); |
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| 305 | model->addIndice(cnt + (j2 -j1 + sampleRate )/ sampleRate ); |
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| 306 | cnt++; |
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| 307 | |
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| 308 | } |
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| 309 | |
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| 310 | |
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| 311 | SDL_UnlockSurface(hm->colourMap); |
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| 312 | |
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| 313 | model->finalize(); |
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| 314 | |
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| 315 | |
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| 316 | |
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| 317 | |
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| 318 | #undef heightMap |
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| 319 | #undef colours |
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| 320 | #undef scaleX |
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| 321 | #undef scaleY |
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| 322 | #undef scaleZ |
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| 323 | #undef shiftX |
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| 324 | #undef shiftY |
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| 325 | #undef shiftZ |
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| 326 | #undef normalVectorField |
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| 327 | |
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[5942] | 328 | } |
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| 329 | |
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[6956] | 330 | HeightMap::HeightMap() |
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[5967] | 331 | { |
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[6956] | 332 | |
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| 333 | } |
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| 334 | |
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[7203] | 335 | HeightMap::HeightMap(const std::string& height_map_name = "") |
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| 336 | : VertexArrayModel() |
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[6956] | 337 | { |
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[5976] | 338 | this->setClassID(CL_HEIGHT_MAP, "HeightMap"); |
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[7203] | 339 | heightMap = IMG_Load(height_map_name.c_str()); |
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[5990] | 340 | if(heightMap!=NULL) { |
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[6956] | 341 | |
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[7203] | 342 | PRINTF(0)("loading Image %s\n", height_map_name.c_str()); |
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[7014] | 343 | PRINTF(0)("width : %i\n", heightMap->w); |
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| 344 | PRINTF(0)("height : %i\n", heightMap->h); |
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| 345 | PRINTF(0)("%i Byte(s) per Pixel \n", heightMap->format->BytesPerPixel); |
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| 346 | PRINTF(0)("Rshift : %i\n", heightMap->format->Rshift); |
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| 347 | PRINTF(0)("Bshift: %i\n", heightMap->format->Bshift); |
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| 348 | PRINTF(0)("Gshift: %i\n", heightMap->format->Gshift); |
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| 349 | PRINTF(0)("Rmask: %i\n", heightMap->format->Rmask); |
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| 350 | PRINTF(0)("Gmask: %i\n", heightMap->format->Gmask); |
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| 351 | } |
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[6956] | 352 | |
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[7203] | 353 | else PRINTF(4)("oops! couldn't load %s for some reason.\n", height_map_name.c_str()); |
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[6956] | 354 | |
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[7014] | 355 | |
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[6956] | 356 | generateNormalVectorField(); |
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| 357 | |
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| 358 | shiftX = 0; |
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| 359 | shiftY = 0; |
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| 360 | shiftZ = 0; |
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| 361 | |
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| 362 | } |
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| 363 | |
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[7203] | 364 | HeightMap::HeightMap(const std::string& height_map_name = NULL, const std::string& colour_map_name = NULL) |
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| 365 | : VertexArrayModel() |
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[6956] | 366 | { |
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| 367 | this->setClassID(CL_HEIGHT_MAP, "HeightMap"); |
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| 368 | |
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[7203] | 369 | heightMap = IMG_Load(height_map_name.c_str()); |
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[6956] | 370 | if(heightMap!=NULL) { |
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| 371 | |
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[7203] | 372 | PRINTF(0)("loading Image %s\n", height_map_name.c_str()); |
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[7014] | 373 | PRINTF(0)("width : %i\n", heightMap->w); |
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| 374 | PRINTF(0)("height : %i\n", heightMap->h); |
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| 375 | PRINTF(0)("%i Byte(s) per Pixel \n", heightMap->format->BytesPerPixel); |
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| 376 | PRINTF(0)("Rshift : %i\n", heightMap->format->Rshift); |
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| 377 | PRINTF(0)("Bshift: %i\n", heightMap->format->Bshift); |
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| 378 | PRINTF(0)("Gshift: %i\n", heightMap->format->Gshift); |
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| 379 | PRINTF(0)("Rmask: %i\n", heightMap->format->Rmask); |
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| 380 | PRINTF(0)("Gmask: %i\n", heightMap->format->Gmask); |
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| 381 | } |
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[6956] | 382 | |
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[7203] | 383 | else PRINTF(4)("oops! couldn't load %s for some reason.\n", height_map_name.c_str()); |
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[6956] | 384 | |
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| 385 | |
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| 386 | generateNormalVectorField(); |
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| 387 | |
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| 388 | colourMap=NULL; |
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[7203] | 389 | if(colour_map_name != "") |
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[6956] | 390 | { |
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[7203] | 391 | colourMap = IMG_Load(colour_map_name.c_str()); |
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[6956] | 392 | } |
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[7014] | 393 | |
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[6956] | 394 | if(colourMap != NULL) |
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[7014] | 395 | { |
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[7203] | 396 | PRINTF(0)("loading Image %s\n", colour_map_name.c_str()); |
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[7014] | 397 | PRINTF(0)("width : %i\n", colourMap->w); |
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| 398 | PRINTF(0)("height : %i\n", colourMap->h); |
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| 399 | PRINTF(0)("%i Byte(s) per Pixel \n", colourMap->format->BytesPerPixel); |
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| 400 | PRINTF(0)("Rshift : %i\n", colourMap->format->Rshift); |
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| 401 | PRINTF(0)("Bshift: %i\n", colourMap->format->Bshift); |
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| 402 | PRINTF(0)("Gshift: %i\n", colourMap->format->Gshift); |
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| 403 | PRINTF(0)("Rmask: %i\n", colourMap->format->Rmask); |
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| 404 | PRINTF(0)("Gmask: %i\n", colourMap->format->Gmask); |
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| 405 | } |
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| 406 | else PRINTF(0)("oops! couldn't load colorMap for some reason.\n"); |
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[6956] | 407 | |
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[7014] | 408 | |
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| 409 | |
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[6956] | 410 | if(colourMap != NULL) |
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| 411 | { |
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| 412 | colours = (unsigned char *) colourMap->pixels; |
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| 413 | hasColourMap = true; |
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| 414 | } |
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| 415 | else hasColourMap = false; |
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[7014] | 416 | |
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| 417 | |
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[6956] | 418 | heights = (unsigned char*) heightMap->pixels; |
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| 419 | shiftX = 0; |
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| 420 | shiftY = 0; |
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| 421 | shiftZ = 0; |
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[5967] | 422 | } |
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| 423 | |
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| 424 | |
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| 425 | HeightMap::~HeightMap() |
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| 426 | { |
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[7014] | 427 | delete heightMap; |
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| 428 | delete colourMap; |
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[6956] | 429 | |
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| 430 | |
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[7014] | 431 | for(int i=0;i < heightMap->h/tileSize ; i++) |
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| 432 | { |
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| 433 | for(int j = 0; j < heightMap->w/ tileSize; j++) |
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| 434 | { |
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| 435 | delete tiles [i][j]; |
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| 436 | } |
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| 437 | } |
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| 438 | for(int i=0;i < heightMap->h/tileSize ; i++) |
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| 439 | delete[] tiles[i]; |
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| 440 | delete[] tiles; |
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[6956] | 441 | |
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[7014] | 442 | |
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| 443 | |
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| 444 | |
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| 445 | |
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[6956] | 446 | for(int i=0;i<heightMap->h;i++) |
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| 447 | delete[] normalVectorField [i]; |
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| 448 | delete[] normalVectorField; |
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| 449 | |
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| 450 | |
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| 451 | |
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| 452 | |
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[7014] | 453 | |
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| 454 | |
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| 455 | |
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[5967] | 456 | } |
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| 457 | |
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[5942] | 458 | void HeightMap::load() |
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| 459 | { |
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[5993] | 460 | |
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[6956] | 461 | //Create a Dynamicly sized 2D-Array for Tiles |
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| 462 | tiles = new Tile** [heightMap->h/tileSize]; |
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| 463 | for(int i=0;i < heightMap->h/tileSize ; i++) |
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| 464 | tiles [i]= new (Tile* [heightMap->w /tileSize ]); |
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[5967] | 465 | |
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[6956] | 466 | //SetUp Arrays |
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| 467 | for(int i = 0; i < (heightMap->h )/ tileSize; i ++) |
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| 468 | { |
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[7014] | 469 | for(int j = 0; j < (heightMap->w )/ tileSize; j ++) |
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| 470 | { |
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| 471 | |
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| 472 | tiles[i][j] = new Tile( i*tileSize , j*tileSize , (i+1)*tileSize, (j+1)*tileSize , this ) ; |
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| 473 | } |
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[6956] | 474 | } |
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[5980] | 475 | |
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[6956] | 476 | } |
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[5993] | 477 | |
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| 478 | |
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[7014] | 479 | void HeightMap::draw() |
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[6956] | 480 | { |
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[7014] | 481 | const PNode* camera = State::getCameraNode(); |
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[6956] | 482 | Vector v = camera->getAbsCoor(); |
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| 483 | |
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| 484 | int i_min = 0; |
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| 485 | int i_max = (heightMap->h )/ tileSize; |
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| 486 | int j_min = 0; |
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| 487 | int j_max= (heightMap->w ) / tileSize; |
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| 488 | |
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| 489 | |
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| 490 | |
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[7014] | 491 | for(int i = 0; i < i_max ; i ++) |
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[6956] | 492 | { |
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[7014] | 493 | for(int j = 0; j < j_max ; j++) |
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| 494 | { |
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| 495 | tiles[i][j]->draw(); |
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| 496 | } |
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| 497 | } |
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[5980] | 498 | |
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[6956] | 499 | } |
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| 500 | void HeightMap::generateNormalVectorField() |
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| 501 | { |
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| 502 | int delta = 1; |
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| 503 | heights = (unsigned char*) heightMap->pixels; |
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| 504 | |
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| 505 | //Create a Dynamicly sized 2D-Array to store our normals |
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| 506 | normalVectorField = new Vector* [heightMap->h]; |
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| 507 | for(int i=0;i<heightMap->h;i++) |
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| 508 | normalVectorField [i]= new (Vector [heightMap->w]); |
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| 509 | |
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| 510 | |
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| 511 | |
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| 512 | |
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[7014] | 513 | // Initialize |
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[6956] | 514 | for(int i=0; i< heightMap->h; i++) |
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| 515 | { |
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[7014] | 516 | for(int j = 0; j> heightMap->w; j++) |
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| 517 | { |
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| 518 | Vector v = Vector(0.0, 1.0, 0.0); |
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| 519 | normalVectorField[i][j] = v; |
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| 520 | } |
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[6956] | 521 | } |
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[5967] | 522 | |
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[6956] | 523 | // !!! Does not yet calculate the normals of some border points!!!!! |
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[5990] | 524 | |
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[6956] | 525 | if(heightMap != NULL && heightMap->format->BitsPerPixel == 8 ) |
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[7014] | 526 | { |
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| 527 | SDL_LockSurface(heightMap); |
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| 528 | for(int i = 0 ; i < heightMap->h - 1 ; i ++) |
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| 529 | { |
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| 530 | for(int j = 0; j < heightMap->w - 1 ; j ++) |
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| 531 | { |
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[5942] | 532 | |
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| 533 | |
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[7014] | 534 | delta = (int)heights[j + (i+1)*(heightMap->w )] - (int) heights[j + i*(heightMap->w )]; |
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| 535 | Vector a = Vector(-scaleX,(float)delta*scaleY ,0.0f); |
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[5942] | 536 | |
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[7014] | 537 | delta = (int)heights[j+1 + i*(heightMap->w )] - (int)heights[j + i*(heightMap->w )]; |
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| 538 | Vector b = Vector(0.0f,(float) delta*scaleY ,scaleZ); |
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[5942] | 539 | |
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[6956] | 540 | |
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[7014] | 541 | normalVectorField[i][j] = b.cross(a); |
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| 542 | normalVectorField[i][j].normalize(); |
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[5942] | 543 | |
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[7014] | 544 | } |
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| 545 | } |
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| 546 | SDL_UnlockSurface(heightMap); |
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| 547 | |
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[6956] | 548 | } |
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[5942] | 549 | |
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[6956] | 550 | |
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| 551 | |
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[7014] | 552 | |
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[5942] | 553 | } |
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[6956] | 554 | |
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| 555 | |
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| 556 | void HeightMap::scale(Vector v) |
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| 557 | { |
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| 558 | scaleX = v.x; |
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| 559 | scaleY = v.y; |
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| 560 | scaleZ = v.z; |
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| 561 | generateNormalVectorField(); |
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| 562 | } |
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| 563 | |
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| 564 | void HeightMap::setAbsCoor(Vector v) |
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| 565 | { |
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| 566 | offsetX = v.x; |
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| 567 | offsetY = v.y; |
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| 568 | offsetZ = v.z; |
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| 569 | } |
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| 570 | |
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| 571 | |
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[7014] | 572 | float HeightMap::getHeight(float x, float y) |
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[6956] | 573 | { |
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| 574 | |
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| 575 | x -= offsetX; |
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[7014] | 576 | y -= offsetZ; |
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| 577 | |
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| 578 | |
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[6956] | 579 | int xInt = (int)x / scaleX; x -= (float)((int)x); xInt = heightMap->h - xInt; |
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| 580 | int yInt = (int)y / scaleZ; y -= (float) ((int) y); /*yInt = heightMap->w - yInt;*/ |
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[7014] | 581 | |
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[6956] | 582 | //PRINTF(0)("xInt: %i, yInt: %i, x: %f, y: %f\n", xInt, yInt, x, y); |
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[7014] | 583 | |
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[6956] | 584 | if(xInt <= 0 || xInt >= heightMap->h || yInt <= 0 || yInt >= heightMap->w ) return 0; |
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| 585 | if( y >= 0.5*x) |
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| 586 | { |
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[7014] | 587 | // Check for ... |
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[6956] | 588 | } |
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| 589 | |
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| 590 | float height = heights[yInt + (xInt)*heightMap->w]*scaleY; |
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[7014] | 591 | |
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| 592 | |
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[6956] | 593 | float a = normalVectorField[(xInt)][yInt].x; |
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| 594 | float b = normalVectorField [(xInt)][yInt].z; |
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| 595 | float c = normalVectorField [(xInt)][yInt].y; |
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[7014] | 596 | |
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[6956] | 597 | PRINTF(0)("a: %f \n" ,a); |
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| 598 | PRINTF(0)("b: %f \n" ,b); |
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| 599 | PRINTF(0)("c: %f \n" ,c); |
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[7014] | 600 | |
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[6956] | 601 | height -= ( (a/c)*(x) + (b/c)*(y)); |
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[7014] | 602 | |
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[6956] | 603 | PRINTF(0)("height: %f \n" ,height ); |
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| 604 | return (height + offsetZ); |
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| 605 | } |
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