[2798] | 1 | /* -*- mode: c++; c-basic-offset: 4; indent-tabs-mode: nil -*- */ |
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[3502] | 2 | /* |
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| 3 | * Copyright (c) 2004-2013 HUBzero Foundation, LLC |
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| 4 | * |
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| 5 | */ |
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[3492] | 6 | #include <float.h> |
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| 7 | |
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[776] | 8 | #include <GL/glew.h> |
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[2844] | 9 | |
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[3465] | 10 | #include <graphics/RenderContext.h> |
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| 11 | |
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[1111] | 12 | #include "Grid.h" |
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[776] | 13 | #include "HeightMap.h" |
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| 14 | #include "ContourLineFilter.h" |
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[1111] | 15 | #include "Texture1D.h" |
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[776] | 16 | |
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[2877] | 17 | bool HeightMap::updatePending = false; |
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[932] | 18 | double HeightMap::valueMin = 0.0; |
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| 19 | double HeightMap::valueMax = 1.0; |
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| 20 | |
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[3463] | 21 | using namespace nv::graphics; |
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[3492] | 22 | using namespace vrmath; |
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[3463] | 23 | |
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[862] | 24 | HeightMap::HeightMap() : |
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[3597] | 25 | _vertexBufferObjectID(0), |
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| 26 | _texcoordBufferObjectID(0), |
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| 27 | _vertexCount(0), |
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| 28 | _contour(NULL), |
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| 29 | _transferFunc(NULL), |
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[1546] | 30 | _opacity(0.5f), |
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[3597] | 31 | _indexBuffer(NULL), |
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| 32 | _indexCount(0), |
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| 33 | _contourColor(1.0f, 0.0f, 0.0f), |
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| 34 | _contourVisible(false), |
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[927] | 35 | _visible(false), |
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[3597] | 36 | _scale(1.0f, 1.0f, 1.0f), |
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[1111] | 37 | _centerPoint(0.0f, 0.0f, 0.0f), |
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[1984] | 38 | _heights(NULL) |
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[776] | 39 | { |
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[862] | 40 | _shader = new NvShader(); |
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[1111] | 41 | _shader->loadFragmentProgram("heightcolor.cg", "main"); |
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[776] | 42 | } |
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| 43 | |
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| 44 | HeightMap::~HeightMap() |
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| 45 | { |
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[862] | 46 | reset(); |
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[776] | 47 | |
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[2956] | 48 | if (_shader != NULL) { |
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[927] | 49 | delete _shader; |
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[862] | 50 | } |
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[1984] | 51 | if (_heights != NULL) { |
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[2953] | 52 | delete [] _heights; |
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[1984] | 53 | } |
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[776] | 54 | } |
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| 55 | |
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[1984] | 56 | void |
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[3463] | 57 | HeightMap::render(RenderContext *renderContext) |
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[776] | 58 | { |
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[2927] | 59 | glPushAttrib(GL_ENABLE_BIT | GL_POLYGON_BIT | GL_LIGHTING_BIT); |
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| 60 | |
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[3463] | 61 | if (renderContext->getCullMode() == RenderContext::NO_CULL) { |
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[838] | 62 | glDisable(GL_CULL_FACE); |
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[862] | 63 | } else { |
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[838] | 64 | glEnable(GL_CULL_FACE); |
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[2927] | 65 | glCullFace((GLuint)renderContext->getCullMode()); |
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[838] | 66 | } |
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[2927] | 67 | glPolygonMode(GL_FRONT_AND_BACK, (GLuint)renderContext->getPolygonMode()); |
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| 68 | glShadeModel((GLuint)renderContext->getShadingModel()); |
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[838] | 69 | |
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[2927] | 70 | glMatrixMode(GL_MODELVIEW); |
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[776] | 71 | glPushMatrix(); |
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[837] | 72 | |
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[1111] | 73 | #ifndef notdef |
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[932] | 74 | if (_scale.x != 0.0) { |
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[1111] | 75 | glScalef(1 / _scale.x, 1 / _scale.y , 1 / _scale.z); |
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[837] | 76 | } |
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[1111] | 77 | #endif |
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[862] | 78 | glTranslatef(-_centerPoint.x, -_centerPoint.y, -_centerPoint.z); |
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[837] | 79 | |
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[1111] | 80 | if (_contour != NULL) { |
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[2927] | 81 | glDepthRange(0.001, 1.0); |
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[862] | 82 | } |
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[927] | 83 | |
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[862] | 84 | glEnable(GL_DEPTH_TEST); |
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[776] | 85 | |
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[862] | 86 | if (_vertexBufferObjectID) { |
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[927] | 87 | glColor3f(1.0f, 1.0f, 1.0f); |
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| 88 | glShadeModel(GL_SMOOTH); |
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| 89 | glEnable(GL_BLEND); |
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| 90 | glEnableClientState(GL_VERTEX_ARRAY); |
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| 91 | glDisableClientState(GL_COLOR_ARRAY); |
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| 92 | glDisableClientState(GL_INDEX_ARRAY); |
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| 93 | glDisableClientState(GL_NORMAL_ARRAY); |
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[2927] | 94 | |
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[3597] | 95 | if (_transferFunc) { |
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[1000] | 96 | // PUT vertex program here |
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| 97 | // |
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| 98 | // |
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[2927] | 99 | _shader->bind(); |
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[3597] | 100 | _shader->setFPTextureParameter("tf", _transferFunc->id()); |
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[2956] | 101 | _shader->setFPParameter1f("opacity", _opacity); |
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[2927] | 102 | |
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[927] | 103 | glEnable(GL_TEXTURE_1D); |
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[3597] | 104 | _transferFunc->getTexture()->activate(); |
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[2927] | 105 | |
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[927] | 106 | glEnableClientState(GL_TEXTURE_COORD_ARRAY); |
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| 107 | } |
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[2927] | 108 | |
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[927] | 109 | glBindBuffer(GL_ARRAY_BUFFER, _vertexBufferObjectID); |
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| 110 | glVertexPointer(3, GL_FLOAT, 12, 0); |
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[2927] | 111 | |
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[2956] | 112 | glBindBuffer(GL_ARRAY_BUFFER, _texcoordBufferObjectID); |
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[2927] | 113 | glTexCoordPointer(3, GL_FLOAT, 12, 0); |
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| 114 | |
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[1000] | 115 | #define _TRIANGLES_ |
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| 116 | #ifdef _TRIANGLES_ |
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[927] | 117 | glDrawElements(GL_TRIANGLES, _indexCount, GL_UNSIGNED_INT, |
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| 118 | _indexBuffer); |
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[2927] | 119 | #else |
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[1000] | 120 | glDrawElements(GL_QUADS, _indexCount, GL_UNSIGNED_INT, |
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| 121 | _indexBuffer); |
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| 122 | #endif |
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| 123 | |
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[927] | 124 | glBindBuffer(GL_ARRAY_BUFFER, 0); |
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[2927] | 125 | |
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[927] | 126 | glDisableClientState(GL_VERTEX_ARRAY); |
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[3597] | 127 | if (_transferFunc != NULL) { |
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| 128 | _transferFunc->getTexture()->deactivate(); |
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[927] | 129 | glDisableClientState(GL_TEXTURE_COORD_ARRAY); |
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[2927] | 130 | |
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[2956] | 131 | _shader->disableFPTextureParameter("tf"); |
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[2927] | 132 | _shader->unbind(); |
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[927] | 133 | } |
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[862] | 134 | } |
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| 135 | glShadeModel(GL_FLAT); |
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[838] | 136 | glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
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[2927] | 137 | |
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[1111] | 138 | if (_contour != NULL) { |
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[1000] | 139 | if (_contourVisible) { |
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| 140 | glDisable(GL_BLEND); |
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| 141 | glDisable(GL_TEXTURE_2D); |
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[1546] | 142 | glColor4f(_contourColor.x, _contourColor.y, _contourColor.z, |
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[2927] | 143 | _opacity /*1.0f*/); |
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[1000] | 144 | glDepthRange (0.0, 0.999); |
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| 145 | _contour->render(); |
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| 146 | } |
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| 147 | |
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[2927] | 148 | glDepthRange (0.0, 1.0); |
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[862] | 149 | } |
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[2927] | 150 | |
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[776] | 151 | glPopMatrix(); |
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[2927] | 152 | glPopAttrib(); |
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[776] | 153 | } |
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| 154 | |
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[932] | 155 | void |
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[1112] | 156 | HeightMap::createIndexBuffer(int xCount, int zCount, float* heights) |
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[776] | 157 | { |
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[1112] | 158 | if (_indexBuffer != NULL) { |
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| 159 | delete [] _indexBuffer; |
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[1984] | 160 | _indexBuffer = NULL; |
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[1112] | 161 | } |
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| 162 | _indexCount = (xCount - 1) * (zCount - 1) * 6; |
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| 163 | _indexBuffer = new int[_indexCount]; |
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[776] | 164 | |
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| 165 | int i, j; |
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| 166 | int boundaryWidth = xCount - 1; |
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| 167 | int boundaryHeight = zCount - 1; |
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[1112] | 168 | int* ptr = _indexBuffer; |
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[1111] | 169 | int index1, index2, index3, index4; |
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[820] | 170 | bool index1Valid, index2Valid, index3Valid, index4Valid; |
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| 171 | index1Valid = index2Valid = index3Valid = index4Valid = true; |
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| 172 | |
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[862] | 173 | if (heights) { |
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[820] | 174 | int ic = 0; |
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[862] | 175 | for (i = 0; i < boundaryHeight; ++i) { |
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| 176 | for (j = 0; j < boundaryWidth; ++j) { |
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[820] | 177 | index1 = i * xCount +j; |
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| 178 | if (isnan(heights[index1])) index1Valid = false; |
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| 179 | index2 = (i + 1) * xCount + j; |
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| 180 | if (isnan(heights[index2])) index2Valid = false; |
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| 181 | index3 = (i + 1) * xCount + j + 1; |
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| 182 | if (isnan(heights[index3])) index3Valid = false; |
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| 183 | index4 = i * xCount + j + 1; |
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| 184 | if (isnan(heights[index4])) index4Valid = false; |
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| 185 | |
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[1000] | 186 | #ifdef _TRIANGLES_ |
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[862] | 187 | if (index1Valid && index2Valid && index3Valid) { |
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[820] | 188 | *ptr = index1; ++ptr; |
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| 189 | *ptr = index2; ++ptr; |
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| 190 | *ptr = index3; ++ptr; |
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| 191 | ++ic; |
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| 192 | } |
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[862] | 193 | if (index1Valid && index3Valid && index4Valid) { |
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[820] | 194 | *ptr = index1; ++ptr; |
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| 195 | *ptr = index3; ++ptr; |
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| 196 | *ptr = index4; ++ptr; |
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| 197 | ++ic; |
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| 198 | } |
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[1000] | 199 | #else |
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| 200 | if (index1Valid && index2Valid && index3Valid && index4Valid) { |
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| 201 | *ptr = index1; ++ptr; |
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| 202 | *ptr = index2; ++ptr; |
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| 203 | *ptr = index3; ++ptr; |
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| 204 | *ptr = index4; ++ptr; |
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| 205 | ++ic; |
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| 206 | } |
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| 207 | #endif |
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[820] | 208 | } |
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[776] | 209 | } |
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[862] | 210 | } else { |
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| 211 | for (i = 0; i < boundaryHeight; ++i) { |
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| 212 | for (j = 0; j < boundaryWidth; ++j) { |
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[820] | 213 | *ptr = i * xCount + j; ++ptr; |
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| 214 | *ptr = (i + 1) * xCount + j; ++ptr; |
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| 215 | *ptr = (i + 1) * xCount + j + 1; ++ptr; |
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[927] | 216 | *ptr = i * xCount + j; ++ptr; |
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| 217 | *ptr = (i + 1) * xCount + j + 1; ++ptr; |
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[820] | 218 | *ptr = i * xCount + j + 1; ++ptr; |
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| 219 | } |
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| 220 | } |
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| 221 | } |
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[776] | 222 | } |
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| 223 | |
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[932] | 224 | void |
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| 225 | HeightMap::reset() |
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[776] | 226 | { |
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[862] | 227 | if (_vertexBufferObjectID) { |
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[927] | 228 | glDeleteBuffers(1, &_vertexBufferObjectID); |
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[2812] | 229 | _vertexBufferObjectID = 0; |
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[862] | 230 | } |
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[2956] | 231 | if (_texcoordBufferObjectID) { |
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| 232 | glDeleteBuffers(1, &_texcoordBufferObjectID); |
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| 233 | _texcoordBufferObjectID = 0; |
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[862] | 234 | } |
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[1112] | 235 | if (_contour != NULL) { |
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[927] | 236 | delete _contour; |
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[1112] | 237 | _contour = NULL; |
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[862] | 238 | } |
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[1984] | 239 | if (_indexBuffer != NULL) { |
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| 240 | delete [] _indexBuffer; |
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| 241 | _indexBuffer = NULL; |
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| 242 | } |
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[776] | 243 | } |
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[2956] | 244 | #if 0 |
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[932] | 245 | void |
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[3492] | 246 | HeightMap::setHeight(int xCount, int yCount, Vector3f *heights) |
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[776] | 247 | { |
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[862] | 248 | _vertexCount = xCount * yCount; |
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| 249 | reset(); |
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[2877] | 250 | |
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| 251 | _heights = (float *)heights; |
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[929] | 252 | float min, max; |
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| 253 | min = heights[0].y, max = heights[0].y; |
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| 254 | |
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[862] | 255 | int count = xCount * yCount; |
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| 256 | for (int i = 0; i < count; ++i) { |
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[929] | 257 | if (min > heights[i].y) { |
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| 258 | min = heights[i].y; |
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[927] | 259 | } |
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[929] | 260 | if (max < heights[i].y) { |
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| 261 | max = heights[i].y; |
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[927] | 262 | } |
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[862] | 263 | } |
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[776] | 264 | |
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[837] | 265 | _scale.x = 1.0f; |
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[929] | 266 | _scale.z = max - min; |
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[837] | 267 | _scale.y = 1.0f; |
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| 268 | |
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[2932] | 269 | xAxis.setRange(0.0, 1.0); |
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| 270 | yAxis.setRange(0.0, 1.0); |
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| 271 | zAxis.setRange(0.0, 1.0); |
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| 272 | wAxis.setRange(min, max); |
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[2877] | 273 | updatePending = true; |
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| 274 | |
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[929] | 275 | _centerPoint.set(_scale.x * 0.5, _scale.z * 0.5 + min, _scale.y * 0.5); |
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| 276 | |
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[3492] | 277 | Vector3f* texcoord = new Vector3f[count]; |
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[862] | 278 | for (int i = 0; i < count; ++i) { |
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[927] | 279 | texcoord[i].set(0, 0, heights[i].y); |
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[862] | 280 | } |
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| 281 | |
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| 282 | glGenBuffers(1, &_vertexBufferObjectID); |
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[776] | 283 | glBindBuffer(GL_ARRAY_BUFFER, _vertexBufferObjectID); |
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[3492] | 284 | glBufferData(GL_ARRAY_BUFFER, _vertexCount * sizeof( Vector3f ), heights, |
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[927] | 285 | GL_STATIC_DRAW); |
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[2956] | 286 | glGenBuffers(1, &_texcoordBufferObjectID); |
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| 287 | glBindBuffer(GL_ARRAY_BUFFER, _texcoordBufferObjectID); |
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[927] | 288 | glBufferData(GL_ARRAY_BUFFER, _vertexCount * sizeof(float) * 3, texcoord, |
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| 289 | GL_STATIC_DRAW); |
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[862] | 290 | glBindBuffer(GL_ARRAY_BUFFER, 0); |
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[776] | 291 | |
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[927] | 292 | delete [] texcoord; |
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[862] | 293 | |
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[1984] | 294 | if (_contour != NULL) { |
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| 295 | delete _contour; |
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| 296 | _contour = NULL; |
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| 297 | } |
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[862] | 298 | ContourLineFilter lineFilter; |
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| 299 | _contour = lineFilter.create(0.0f, 1.0f, 10, heights, xCount, yCount); |
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[776] | 300 | |
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[862] | 301 | //if (heightMap) |
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| 302 | //{ |
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[3492] | 303 | // VertexBuffer* vertexBuffer = new VertexBuffer(VertexBuffer::POSITION3, xCount * yCount, sizeof(Vector3f) * xCount * yCount, heightMap, false); |
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[1112] | 304 | this->createIndexBuffer(xCount, yCount, 0); |
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[862] | 305 | //} |
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| 306 | //else |
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| 307 | //{ |
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[3452] | 308 | //ERROR("HeightMap::setHeight"); |
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[862] | 309 | //} |
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[776] | 310 | } |
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[2956] | 311 | #endif |
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[862] | 312 | void |
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[1111] | 313 | HeightMap::setHeight(float xMin, float yMin, float xMax, float yMax, |
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[2877] | 314 | int xNum, int yNum, float *heights) |
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[776] | 315 | { |
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[1111] | 316 | _vertexCount = xNum * yNum; |
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[1984] | 317 | _xNum = xNum, _yNum = yNum; |
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| 318 | _heights = heights; |
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[1111] | 319 | reset(); |
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[862] | 320 | |
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[1111] | 321 | // Get the min/max of the heights. */ |
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[929] | 322 | float min, max; |
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[1111] | 323 | min = max = heights[0]; |
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| 324 | for (int i = 0; i < _vertexCount; ++i) { |
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[929] | 325 | if (min > heights[i]) { |
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| 326 | min = heights[i]; |
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| 327 | } else if (max < heights[i]) { |
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| 328 | max = heights[i]; |
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[927] | 329 | } |
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[862] | 330 | } |
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[1161] | 331 | #ifdef notdef |
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| 332 | if (retainScale_) { |
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| 333 | // Check the units of each axis. If they are the same, we want to |
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| 334 | // retain the surface's aspect ratio when transforming coordinates to |
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| 335 | // the grid. Use the range of the longest axis when the units are the |
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| 336 | // same. |
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| 337 | if (xAxis.units() != NULL) && (xAxis.units() == yAxis.units()) { |
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| 338 | } |
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| 339 | if (yAxis.units() != NULL) && (yAxis.units() == zAxis.units()) { |
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| 340 | } |
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| 341 | } |
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| 342 | #endif |
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| 343 | |
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[2932] | 344 | wAxis.setRange(min, max); |
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| 345 | yAxis.setRange(min, max); |
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| 346 | xAxis.setRange(xMin, xMax); |
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| 347 | zAxis.setRange(yMin, yMax); |
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| 348 | |
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[1111] | 349 | min = 0.0, max = 1.0; |
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| 350 | xMin = yMin = min = 0.0; |
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| 351 | xMax = yMax = max = 1.0; |
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| 352 | // Save the scales. |
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| 353 | _scale.x = _scale.y = _scale.z = 1.0; |
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| 354 | |
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[2877] | 355 | updatePending = true; |
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[929] | 356 | |
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[1111] | 357 | _centerPoint.set(0.5, 0.5, 0.5); |
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[862] | 358 | |
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[1111] | 359 | #ifndef notdef |
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[3492] | 360 | Vector3f* texcoord = new Vector3f[_vertexCount]; |
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[1111] | 361 | for (int i = 0; i < _vertexCount; ++i) { |
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[927] | 362 | texcoord[i].set(0, 0, heights[i]); |
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[862] | 363 | } |
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| 364 | |
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[3492] | 365 | Vector3f* map = createHeightVertices(xMin, yMin, xMax, yMax, xNum, yNum, |
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[1984] | 366 | heights); |
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[862] | 367 | |
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| 368 | glGenBuffers(1, &_vertexBufferObjectID); |
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[776] | 369 | glBindBuffer(GL_ARRAY_BUFFER, _vertexBufferObjectID); |
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[3492] | 370 | glBufferData(GL_ARRAY_BUFFER, _vertexCount * sizeof(Vector3f), map, |
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[927] | 371 | GL_STATIC_DRAW); |
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[2956] | 372 | glGenBuffers(1, &_texcoordBufferObjectID); |
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| 373 | glBindBuffer(GL_ARRAY_BUFFER, _texcoordBufferObjectID); |
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[927] | 374 | glBufferData(GL_ARRAY_BUFFER, _vertexCount * sizeof(float) * 3, texcoord, |
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| 375 | GL_STATIC_DRAW); |
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[862] | 376 | glBindBuffer(GL_ARRAY_BUFFER, 0); |
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[776] | 377 | |
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[927] | 378 | delete [] texcoord; |
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[862] | 379 | |
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| 380 | |
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[1984] | 381 | if (_contour != NULL) { |
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| 382 | delete _contour; |
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| 383 | _contour = NULL; |
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| 384 | } |
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[862] | 385 | ContourLineFilter lineFilter; |
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[3597] | 386 | //lineFilter.transferFunction(_transferFunc); |
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[1984] | 387 | _contour = lineFilter.create(0.0f, 1.0f, 10, map, xNum, yNum); |
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[3362] | 388 | |
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[1112] | 389 | this->createIndexBuffer(xNum, yNum, heights); |
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[1984] | 390 | delete [] map; |
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[1111] | 391 | #endif |
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[776] | 392 | } |
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| 393 | |
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[3492] | 394 | Vector3f * |
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[1111] | 395 | HeightMap::createHeightVertices(float xMin, float yMin, float xMax, |
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[2877] | 396 | float yMax, int xNum, int yNum, float *height) |
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[776] | 397 | { |
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[3492] | 398 | Vector3f* vertices = new Vector3f[xNum * yNum]; |
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[776] | 399 | |
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[3597] | 400 | Vector3f* dstData = vertices; |
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| 401 | float* srcData = height; |
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[862] | 402 | |
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[1111] | 403 | for (int y = 0; y < yNum; ++y) { |
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[927] | 404 | float yCoord; |
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[776] | 405 | |
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[1111] | 406 | yCoord = yMin + ((yMax - yMin) * y) / (yNum - 1); |
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| 407 | for (int x = 0; x < xNum; ++x) { |
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[927] | 408 | float xCoord; |
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[776] | 409 | |
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[1111] | 410 | xCoord = xMin + ((xMax - xMin) * x) / (xNum - 1); |
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[3597] | 411 | dstData->set(xCoord, *srcData, yCoord); |
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[862] | 412 | |
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[3597] | 413 | ++dstData; |
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| 414 | ++srcData; |
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[927] | 415 | } |
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[862] | 416 | } |
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| 417 | return vertices; |
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[776] | 418 | } |
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| 419 | |
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[2927] | 420 | /** |
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| 421 | * \brief Maps the data coordinates of the surface into the grid's axes. |
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| 422 | */ |
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[1111] | 423 | void |
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[3597] | 424 | HeightMap::mapToGrid(Grid *grid) |
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[1111] | 425 | { |
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[1984] | 426 | int count = _xNum * _yNum; |
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[1111] | 427 | |
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| 428 | reset(); |
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| 429 | |
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| 430 | // The range of the grid's y-axis 0..1 represents the distance between the |
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[1161] | 431 | // smallest and largest major ticks for all surfaces plotted. Translate |
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[1111] | 432 | // this surface's y-values (heights) into the grid's axis coordinates. |
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| 433 | |
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[3597] | 434 | float yScale = 1.0 / (grid->yAxis.max() - grid->yAxis.min()); |
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[1111] | 435 | float *p, *q, *pend; |
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| 436 | float *normHeights = new float[count]; |
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[1984] | 437 | for (p = _heights, pend = p + count, q = normHeights; p < pend; p++, q++) { |
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[3597] | 438 | *q = (*p - grid->yAxis.min()) * yScale; |
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[1111] | 439 | } |
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[3492] | 440 | Vector3f *t, *texcoord; |
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| 441 | texcoord = new Vector3f[count]; |
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[1111] | 442 | for (t = texcoord, p = normHeights, pend = p + count; p < pend; p++, t++) { |
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| 443 | t->set(0, 0, *p); |
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| 444 | } |
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| 445 | |
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[1161] | 446 | // Normalize the mesh coordinates (x and z min/max) the range of the major |
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| 447 | // ticks for the x and z grid axes as well. |
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[1111] | 448 | |
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| 449 | float xScale, zScale; |
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| 450 | float xMin, xMax, zMin, zMax; |
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| 451 | |
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[3597] | 452 | xScale = 1.0 / (grid->xAxis.max() - grid->xAxis.min()); |
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| 453 | xMin = (xAxis.min() - grid->xAxis.min()) * xScale; |
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| 454 | xMax = (xAxis.max() - grid->xAxis.min()) * xScale; |
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| 455 | zScale = 1.0 / (grid->zAxis.max() - grid->zAxis.min()); |
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| 456 | zMin = (zAxis.min() - grid->zAxis.min()) * zScale; |
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| 457 | zMax = (zAxis.max() - grid->zAxis.min()) * zScale; |
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[1111] | 458 | |
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[3492] | 459 | Vector3f* vertices; |
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[1984] | 460 | vertices = createHeightVertices(xMin, zMin, xMax, zMax, _xNum, _yNum, |
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[1111] | 461 | normHeights); |
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| 462 | |
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| 463 | glGenBuffers(1, &_vertexBufferObjectID); |
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| 464 | glBindBuffer(GL_ARRAY_BUFFER, _vertexBufferObjectID); |
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[3492] | 465 | glBufferData(GL_ARRAY_BUFFER, _vertexCount * sizeof(Vector3f), vertices, |
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[1111] | 466 | GL_STATIC_DRAW); |
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[2956] | 467 | glGenBuffers(1, &_texcoordBufferObjectID); |
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| 468 | glBindBuffer(GL_ARRAY_BUFFER, _texcoordBufferObjectID); |
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[1111] | 469 | glBufferData(GL_ARRAY_BUFFER, _vertexCount * sizeof(float) * 3, texcoord, |
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| 470 | GL_STATIC_DRAW); |
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| 471 | glBindBuffer(GL_ARRAY_BUFFER, 0); |
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| 472 | delete [] texcoord; |
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| 473 | |
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[1984] | 474 | if (_contour != NULL) { |
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| 475 | delete _contour; |
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| 476 | _contour = NULL; |
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| 477 | } |
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[1111] | 478 | ContourLineFilter lineFilter; |
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[3597] | 479 | //lineFilter.transferFunction(_transferFunc); |
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[1984] | 480 | _contour = lineFilter.create(0.0f, 1.0f, 10, vertices, _xNum, _yNum); |
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[1111] | 481 | |
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[1984] | 482 | this->createIndexBuffer(_xNum, _yNum, normHeights); |
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[1111] | 483 | delete [] normHeights; |
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[1984] | 484 | delete [] vertices; |
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[1111] | 485 | } |
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[3492] | 486 | |
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| 487 | void |
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| 488 | HeightMap::getWorldSpaceBounds(Vector3f& bboxMin, |
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| 489 | Vector3f& bboxMax) const |
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| 490 | { |
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| 491 | bboxMin.set(FLT_MAX, FLT_MAX, FLT_MAX); |
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| 492 | bboxMax.set(-FLT_MAX, -FLT_MAX, -FLT_MAX); |
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| 493 | |
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| 494 | |
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| 495 | } |
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