[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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[4889] | 17 | using namespace nv; |
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| 18 | using namespace nv::graphics; |
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| 19 | using namespace vrmath; |
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| 20 | |
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[2877] | 21 | bool HeightMap::updatePending = false; |
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[932] | 22 | double HeightMap::valueMin = 0.0; |
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| 23 | double HeightMap::valueMax = 1.0; |
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| 24 | |
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[862] | 25 | HeightMap::HeightMap() : |
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[4612] | 26 | _vertexBufferObjectID(0), |
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| 27 | _texcoordBufferObjectID(0), |
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| 28 | _vertexCount(0), |
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| 29 | _contour(NULL), |
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| 30 | _transferFunc(NULL), |
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[1546] | 31 | _opacity(0.5f), |
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[4612] | 32 | _indexBuffer(NULL), |
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| 33 | _indexCount(0), |
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| 34 | _contourColor(1.0f, 0.0f, 0.0f), |
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| 35 | _contourVisible(false), |
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[927] | 36 | _visible(false), |
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[4612] | 37 | _scale(1.0f, 1.0f, 1.0f), |
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[1111] | 38 | _centerPoint(0.0f, 0.0f, 0.0f), |
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[1984] | 39 | _heights(NULL) |
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[776] | 40 | { |
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[4889] | 41 | _shader = new Shader(); |
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[4904] | 42 | _shader->loadFragmentProgram("heightcolor.cg"); |
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[776] | 43 | } |
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| 44 | |
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| 45 | HeightMap::~HeightMap() |
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| 46 | { |
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[862] | 47 | reset(); |
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[776] | 48 | |
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[2956] | 49 | if (_shader != NULL) { |
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[927] | 50 | delete _shader; |
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[862] | 51 | } |
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[1984] | 52 | if (_heights != NULL) { |
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[2953] | 53 | delete [] _heights; |
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[1984] | 54 | } |
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[776] | 55 | } |
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| 56 | |
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[1984] | 57 | void |
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[3463] | 58 | HeightMap::render(RenderContext *renderContext) |
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[776] | 59 | { |
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[4874] | 60 | if (!isVisible()) |
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| 61 | return; |
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| 62 | |
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[2927] | 63 | glPushAttrib(GL_ENABLE_BIT | GL_POLYGON_BIT | GL_LIGHTING_BIT); |
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| 64 | |
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[3463] | 65 | if (renderContext->getCullMode() == RenderContext::NO_CULL) { |
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[838] | 66 | glDisable(GL_CULL_FACE); |
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[862] | 67 | } else { |
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[838] | 68 | glEnable(GL_CULL_FACE); |
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[2927] | 69 | glCullFace((GLuint)renderContext->getCullMode()); |
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[838] | 70 | } |
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[2927] | 71 | glPolygonMode(GL_FRONT_AND_BACK, (GLuint)renderContext->getPolygonMode()); |
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| 72 | glShadeModel((GLuint)renderContext->getShadingModel()); |
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[838] | 73 | |
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[2927] | 74 | glMatrixMode(GL_MODELVIEW); |
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[776] | 75 | glPushMatrix(); |
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[837] | 76 | |
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[1111] | 77 | #ifndef notdef |
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[932] | 78 | if (_scale.x != 0.0) { |
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[1111] | 79 | glScalef(1 / _scale.x, 1 / _scale.y , 1 / _scale.z); |
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[837] | 80 | } |
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[1111] | 81 | #endif |
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[862] | 82 | glTranslatef(-_centerPoint.x, -_centerPoint.y, -_centerPoint.z); |
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[837] | 83 | |
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[1111] | 84 | if (_contour != NULL) { |
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[2927] | 85 | glDepthRange(0.001, 1.0); |
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[862] | 86 | } |
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[927] | 87 | |
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[862] | 88 | glEnable(GL_DEPTH_TEST); |
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[776] | 89 | |
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[862] | 90 | if (_vertexBufferObjectID) { |
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[927] | 91 | glColor3f(1.0f, 1.0f, 1.0f); |
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| 92 | glShadeModel(GL_SMOOTH); |
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| 93 | glEnable(GL_BLEND); |
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| 94 | glEnableClientState(GL_VERTEX_ARRAY); |
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| 95 | glDisableClientState(GL_COLOR_ARRAY); |
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| 96 | glDisableClientState(GL_INDEX_ARRAY); |
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| 97 | glDisableClientState(GL_NORMAL_ARRAY); |
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[2927] | 98 | |
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[4612] | 99 | if (_transferFunc) { |
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[1000] | 100 | // PUT vertex program here |
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| 101 | // |
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| 102 | // |
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[2927] | 103 | _shader->bind(); |
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[4612] | 104 | _shader->setFPTextureParameter("tf", _transferFunc->id()); |
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[2956] | 105 | _shader->setFPParameter1f("opacity", _opacity); |
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[2927] | 106 | |
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[927] | 107 | glEnable(GL_TEXTURE_1D); |
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[4612] | 108 | _transferFunc->getTexture()->activate(); |
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[2927] | 109 | |
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[927] | 110 | glEnableClientState(GL_TEXTURE_COORD_ARRAY); |
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| 111 | } |
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[2927] | 112 | |
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[927] | 113 | glBindBuffer(GL_ARRAY_BUFFER, _vertexBufferObjectID); |
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| 114 | glVertexPointer(3, GL_FLOAT, 12, 0); |
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[2927] | 115 | |
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[2956] | 116 | glBindBuffer(GL_ARRAY_BUFFER, _texcoordBufferObjectID); |
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[2927] | 117 | glTexCoordPointer(3, GL_FLOAT, 12, 0); |
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| 118 | |
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[1000] | 119 | #define _TRIANGLES_ |
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| 120 | #ifdef _TRIANGLES_ |
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[927] | 121 | glDrawElements(GL_TRIANGLES, _indexCount, GL_UNSIGNED_INT, |
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| 122 | _indexBuffer); |
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[2927] | 123 | #else |
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[1000] | 124 | glDrawElements(GL_QUADS, _indexCount, GL_UNSIGNED_INT, |
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| 125 | _indexBuffer); |
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| 126 | #endif |
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| 127 | |
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[927] | 128 | glBindBuffer(GL_ARRAY_BUFFER, 0); |
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[2927] | 129 | |
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[927] | 130 | glDisableClientState(GL_VERTEX_ARRAY); |
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[4612] | 131 | if (_transferFunc != NULL) { |
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| 132 | _transferFunc->getTexture()->deactivate(); |
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[927] | 133 | glDisableClientState(GL_TEXTURE_COORD_ARRAY); |
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[2927] | 134 | |
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[2956] | 135 | _shader->disableFPTextureParameter("tf"); |
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[2927] | 136 | _shader->unbind(); |
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[927] | 137 | } |
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[862] | 138 | } |
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| 139 | glShadeModel(GL_FLAT); |
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[838] | 140 | glPolygonMode(GL_FRONT_AND_BACK, GL_FILL); |
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[2927] | 141 | |
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[1111] | 142 | if (_contour != NULL) { |
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[1000] | 143 | if (_contourVisible) { |
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| 144 | glDisable(GL_BLEND); |
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| 145 | glDisable(GL_TEXTURE_2D); |
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[1546] | 146 | glColor4f(_contourColor.x, _contourColor.y, _contourColor.z, |
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[2927] | 147 | _opacity /*1.0f*/); |
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[1000] | 148 | glDepthRange (0.0, 0.999); |
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| 149 | _contour->render(); |
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| 150 | } |
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| 151 | |
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[2927] | 152 | glDepthRange (0.0, 1.0); |
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[862] | 153 | } |
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[2927] | 154 | |
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[776] | 155 | glPopMatrix(); |
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[2927] | 156 | glPopAttrib(); |
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[776] | 157 | } |
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| 158 | |
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[932] | 159 | void |
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[1112] | 160 | HeightMap::createIndexBuffer(int xCount, int zCount, float* heights) |
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[776] | 161 | { |
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[1112] | 162 | if (_indexBuffer != NULL) { |
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| 163 | delete [] _indexBuffer; |
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[1984] | 164 | _indexBuffer = NULL; |
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[1112] | 165 | } |
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| 166 | _indexCount = (xCount - 1) * (zCount - 1) * 6; |
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| 167 | _indexBuffer = new int[_indexCount]; |
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[776] | 168 | |
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| 169 | int i, j; |
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| 170 | int boundaryWidth = xCount - 1; |
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| 171 | int boundaryHeight = zCount - 1; |
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[1112] | 172 | int* ptr = _indexBuffer; |
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[1111] | 173 | int index1, index2, index3, index4; |
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[820] | 174 | bool index1Valid, index2Valid, index3Valid, index4Valid; |
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| 175 | index1Valid = index2Valid = index3Valid = index4Valid = true; |
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| 176 | |
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[862] | 177 | if (heights) { |
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[820] | 178 | int ic = 0; |
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[862] | 179 | for (i = 0; i < boundaryHeight; ++i) { |
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| 180 | for (j = 0; j < boundaryWidth; ++j) { |
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[820] | 181 | index1 = i * xCount +j; |
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| 182 | if (isnan(heights[index1])) index1Valid = false; |
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| 183 | index2 = (i + 1) * xCount + j; |
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| 184 | if (isnan(heights[index2])) index2Valid = false; |
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| 185 | index3 = (i + 1) * xCount + j + 1; |
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| 186 | if (isnan(heights[index3])) index3Valid = false; |
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| 187 | index4 = i * xCount + j + 1; |
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| 188 | if (isnan(heights[index4])) index4Valid = false; |
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| 189 | |
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[1000] | 190 | #ifdef _TRIANGLES_ |
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[862] | 191 | if (index1Valid && index2Valid && index3Valid) { |
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[820] | 192 | *ptr = index1; ++ptr; |
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| 193 | *ptr = index2; ++ptr; |
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| 194 | *ptr = index3; ++ptr; |
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| 195 | ++ic; |
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| 196 | } |
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[862] | 197 | if (index1Valid && index3Valid && index4Valid) { |
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[820] | 198 | *ptr = index1; ++ptr; |
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| 199 | *ptr = index3; ++ptr; |
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| 200 | *ptr = index4; ++ptr; |
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| 201 | ++ic; |
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| 202 | } |
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[1000] | 203 | #else |
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| 204 | if (index1Valid && index2Valid && index3Valid && index4Valid) { |
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| 205 | *ptr = index1; ++ptr; |
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| 206 | *ptr = index2; ++ptr; |
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| 207 | *ptr = index3; ++ptr; |
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| 208 | *ptr = index4; ++ptr; |
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| 209 | ++ic; |
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| 210 | } |
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| 211 | #endif |
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[820] | 212 | } |
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[776] | 213 | } |
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[862] | 214 | } else { |
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| 215 | for (i = 0; i < boundaryHeight; ++i) { |
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| 216 | for (j = 0; j < boundaryWidth; ++j) { |
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[820] | 217 | *ptr = i * xCount + j; ++ptr; |
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| 218 | *ptr = (i + 1) * xCount + j; ++ptr; |
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| 219 | *ptr = (i + 1) * xCount + j + 1; ++ptr; |
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[927] | 220 | *ptr = i * xCount + j; ++ptr; |
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| 221 | *ptr = (i + 1) * xCount + j + 1; ++ptr; |
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[820] | 222 | *ptr = i * xCount + j + 1; ++ptr; |
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| 223 | } |
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| 224 | } |
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| 225 | } |
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[776] | 226 | } |
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| 227 | |
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[932] | 228 | void |
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| 229 | HeightMap::reset() |
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[776] | 230 | { |
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[862] | 231 | if (_vertexBufferObjectID) { |
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[927] | 232 | glDeleteBuffers(1, &_vertexBufferObjectID); |
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[2812] | 233 | _vertexBufferObjectID = 0; |
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[862] | 234 | } |
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[2956] | 235 | if (_texcoordBufferObjectID) { |
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| 236 | glDeleteBuffers(1, &_texcoordBufferObjectID); |
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| 237 | _texcoordBufferObjectID = 0; |
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[862] | 238 | } |
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[1112] | 239 | if (_contour != NULL) { |
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[927] | 240 | delete _contour; |
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[1112] | 241 | _contour = NULL; |
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[862] | 242 | } |
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[1984] | 243 | if (_indexBuffer != NULL) { |
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| 244 | delete [] _indexBuffer; |
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| 245 | _indexBuffer = NULL; |
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| 246 | } |
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[776] | 247 | } |
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[2956] | 248 | #if 0 |
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[932] | 249 | void |
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[3492] | 250 | HeightMap::setHeight(int xCount, int yCount, Vector3f *heights) |
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[776] | 251 | { |
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[862] | 252 | _vertexCount = xCount * yCount; |
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| 253 | reset(); |
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[2877] | 254 | |
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| 255 | _heights = (float *)heights; |
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[929] | 256 | float min, max; |
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| 257 | min = heights[0].y, max = heights[0].y; |
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| 258 | |
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[862] | 259 | int count = xCount * yCount; |
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| 260 | for (int i = 0; i < count; ++i) { |
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[929] | 261 | if (min > heights[i].y) { |
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| 262 | min = heights[i].y; |
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[927] | 263 | } |
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[929] | 264 | if (max < heights[i].y) { |
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| 265 | max = heights[i].y; |
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[927] | 266 | } |
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[862] | 267 | } |
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[776] | 268 | |
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[837] | 269 | _scale.x = 1.0f; |
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[929] | 270 | _scale.z = max - min; |
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[837] | 271 | _scale.y = 1.0f; |
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| 272 | |
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[2932] | 273 | xAxis.setRange(0.0, 1.0); |
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| 274 | yAxis.setRange(0.0, 1.0); |
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| 275 | zAxis.setRange(0.0, 1.0); |
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| 276 | wAxis.setRange(min, max); |
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[2877] | 277 | updatePending = true; |
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| 278 | |
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[929] | 279 | _centerPoint.set(_scale.x * 0.5, _scale.z * 0.5 + min, _scale.y * 0.5); |
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| 280 | |
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[3492] | 281 | Vector3f* texcoord = new Vector3f[count]; |
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[862] | 282 | for (int i = 0; i < count; ++i) { |
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[927] | 283 | texcoord[i].set(0, 0, heights[i].y); |
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[862] | 284 | } |
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| 285 | |
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| 286 | glGenBuffers(1, &_vertexBufferObjectID); |
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[776] | 287 | glBindBuffer(GL_ARRAY_BUFFER, _vertexBufferObjectID); |
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[3492] | 288 | glBufferData(GL_ARRAY_BUFFER, _vertexCount * sizeof( Vector3f ), heights, |
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[927] | 289 | GL_STATIC_DRAW); |
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[2956] | 290 | glGenBuffers(1, &_texcoordBufferObjectID); |
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| 291 | glBindBuffer(GL_ARRAY_BUFFER, _texcoordBufferObjectID); |
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[927] | 292 | glBufferData(GL_ARRAY_BUFFER, _vertexCount * sizeof(float) * 3, texcoord, |
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| 293 | GL_STATIC_DRAW); |
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[862] | 294 | glBindBuffer(GL_ARRAY_BUFFER, 0); |
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[776] | 295 | |
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[927] | 296 | delete [] texcoord; |
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[862] | 297 | |
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[1984] | 298 | if (_contour != NULL) { |
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| 299 | delete _contour; |
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| 300 | _contour = NULL; |
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| 301 | } |
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[862] | 302 | ContourLineFilter lineFilter; |
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| 303 | _contour = lineFilter.create(0.0f, 1.0f, 10, heights, xCount, yCount); |
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[776] | 304 | |
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[862] | 305 | //if (heightMap) |
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| 306 | //{ |
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[3492] | 307 | // VertexBuffer* vertexBuffer = new VertexBuffer(VertexBuffer::POSITION3, xCount * yCount, sizeof(Vector3f) * xCount * yCount, heightMap, false); |
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[1112] | 308 | this->createIndexBuffer(xCount, yCount, 0); |
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[862] | 309 | //} |
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| 310 | //else |
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| 311 | //{ |
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[3452] | 312 | //ERROR("HeightMap::setHeight"); |
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[862] | 313 | //} |
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[776] | 314 | } |
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[2956] | 315 | #endif |
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[862] | 316 | void |
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[1111] | 317 | HeightMap::setHeight(float xMin, float yMin, float xMax, float yMax, |
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[2877] | 318 | int xNum, int yNum, float *heights) |
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[776] | 319 | { |
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[1111] | 320 | _vertexCount = xNum * yNum; |
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[1984] | 321 | _xNum = xNum, _yNum = yNum; |
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| 322 | _heights = heights; |
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[1111] | 323 | reset(); |
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[862] | 324 | |
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[1111] | 325 | // Get the min/max of the heights. */ |
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[929] | 326 | float min, max; |
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[1111] | 327 | min = max = heights[0]; |
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| 328 | for (int i = 0; i < _vertexCount; ++i) { |
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[929] | 329 | if (min > heights[i]) { |
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| 330 | min = heights[i]; |
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| 331 | } else if (max < heights[i]) { |
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| 332 | max = heights[i]; |
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[927] | 333 | } |
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[862] | 334 | } |
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[1161] | 335 | #ifdef notdef |
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| 336 | if (retainScale_) { |
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| 337 | // Check the units of each axis. If they are the same, we want to |
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| 338 | // retain the surface's aspect ratio when transforming coordinates to |
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| 339 | // the grid. Use the range of the longest axis when the units are the |
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| 340 | // same. |
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| 341 | if (xAxis.units() != NULL) && (xAxis.units() == yAxis.units()) { |
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| 342 | } |
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| 343 | if (yAxis.units() != NULL) && (yAxis.units() == zAxis.units()) { |
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| 344 | } |
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| 345 | } |
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| 346 | #endif |
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| 347 | |
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[2932] | 348 | wAxis.setRange(min, max); |
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| 349 | yAxis.setRange(min, max); |
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| 350 | xAxis.setRange(xMin, xMax); |
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| 351 | zAxis.setRange(yMin, yMax); |
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| 352 | |
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[1111] | 353 | min = 0.0, max = 1.0; |
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| 354 | xMin = yMin = min = 0.0; |
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| 355 | xMax = yMax = max = 1.0; |
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| 356 | // Save the scales. |
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| 357 | _scale.x = _scale.y = _scale.z = 1.0; |
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| 358 | |
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[2877] | 359 | updatePending = true; |
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[929] | 360 | |
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[1111] | 361 | _centerPoint.set(0.5, 0.5, 0.5); |
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[862] | 362 | |
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[1111] | 363 | #ifndef notdef |
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[3492] | 364 | Vector3f* texcoord = new Vector3f[_vertexCount]; |
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[1111] | 365 | for (int i = 0; i < _vertexCount; ++i) { |
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[927] | 366 | texcoord[i].set(0, 0, heights[i]); |
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[862] | 367 | } |
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| 368 | |
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[3492] | 369 | Vector3f* map = createHeightVertices(xMin, yMin, xMax, yMax, xNum, yNum, |
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[1984] | 370 | heights); |
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[862] | 371 | |
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| 372 | glGenBuffers(1, &_vertexBufferObjectID); |
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[776] | 373 | glBindBuffer(GL_ARRAY_BUFFER, _vertexBufferObjectID); |
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[3492] | 374 | glBufferData(GL_ARRAY_BUFFER, _vertexCount * sizeof(Vector3f), map, |
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[927] | 375 | GL_STATIC_DRAW); |
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[2956] | 376 | glGenBuffers(1, &_texcoordBufferObjectID); |
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| 377 | glBindBuffer(GL_ARRAY_BUFFER, _texcoordBufferObjectID); |
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[927] | 378 | glBufferData(GL_ARRAY_BUFFER, _vertexCount * sizeof(float) * 3, texcoord, |
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| 379 | GL_STATIC_DRAW); |
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[862] | 380 | glBindBuffer(GL_ARRAY_BUFFER, 0); |
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[776] | 381 | |
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[927] | 382 | delete [] texcoord; |
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[862] | 383 | |
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| 384 | |
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[1984] | 385 | if (_contour != NULL) { |
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| 386 | delete _contour; |
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| 387 | _contour = NULL; |
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| 388 | } |
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[862] | 389 | ContourLineFilter lineFilter; |
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[4612] | 390 | //lineFilter.transferFunction(_transferFunc); |
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[1984] | 391 | _contour = lineFilter.create(0.0f, 1.0f, 10, map, xNum, yNum); |
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[3362] | 392 | |
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[1112] | 393 | this->createIndexBuffer(xNum, yNum, heights); |
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[1984] | 394 | delete [] map; |
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[1111] | 395 | #endif |
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[776] | 396 | } |
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| 397 | |
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[3492] | 398 | Vector3f * |
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[1111] | 399 | HeightMap::createHeightVertices(float xMin, float yMin, float xMax, |
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[2877] | 400 | float yMax, int xNum, int yNum, float *height) |
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[776] | 401 | { |
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[3492] | 402 | Vector3f* vertices = new Vector3f[xNum * yNum]; |
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[776] | 403 | |
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[4612] | 404 | Vector3f* dstData = vertices; |
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| 405 | float* srcData = height; |
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[862] | 406 | |
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[1111] | 407 | for (int y = 0; y < yNum; ++y) { |
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[927] | 408 | float yCoord; |
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[776] | 409 | |
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[1111] | 410 | yCoord = yMin + ((yMax - yMin) * y) / (yNum - 1); |
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| 411 | for (int x = 0; x < xNum; ++x) { |
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[927] | 412 | float xCoord; |
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[776] | 413 | |
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[1111] | 414 | xCoord = xMin + ((xMax - xMin) * x) / (xNum - 1); |
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[4612] | 415 | dstData->set(xCoord, *srcData, yCoord); |
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[862] | 416 | |
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[4612] | 417 | ++dstData; |
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| 418 | ++srcData; |
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[927] | 419 | } |
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[862] | 420 | } |
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| 421 | return vertices; |
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[776] | 422 | } |
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| 423 | |
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[2927] | 424 | /** |
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| 425 | * \brief Maps the data coordinates of the surface into the grid's axes. |
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| 426 | */ |
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[1111] | 427 | void |
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[4612] | 428 | HeightMap::mapToGrid(Grid *grid) |
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[1111] | 429 | { |
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[1984] | 430 | int count = _xNum * _yNum; |
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[1111] | 431 | |
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| 432 | reset(); |
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| 433 | |
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| 434 | // The range of the grid's y-axis 0..1 represents the distance between the |
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[1161] | 435 | // smallest and largest major ticks for all surfaces plotted. Translate |
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[1111] | 436 | // this surface's y-values (heights) into the grid's axis coordinates. |
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| 437 | |
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[4612] | 438 | float yScale = 1.0 / (grid->yAxis.max() - grid->yAxis.min()); |
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[1111] | 439 | float *p, *q, *pend; |
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| 440 | float *normHeights = new float[count]; |
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[1984] | 441 | for (p = _heights, pend = p + count, q = normHeights; p < pend; p++, q++) { |
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[4612] | 442 | *q = (*p - grid->yAxis.min()) * yScale; |
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[1111] | 443 | } |
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[3492] | 444 | Vector3f *t, *texcoord; |
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| 445 | texcoord = new Vector3f[count]; |
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[1111] | 446 | for (t = texcoord, p = normHeights, pend = p + count; p < pend; p++, t++) { |
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| 447 | t->set(0, 0, *p); |
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| 448 | } |
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| 449 | |
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[1161] | 450 | // Normalize the mesh coordinates (x and z min/max) the range of the major |
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| 451 | // ticks for the x and z grid axes as well. |
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[1111] | 452 | |
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| 453 | float xScale, zScale; |
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| 454 | float xMin, xMax, zMin, zMax; |
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| 455 | |
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[4612] | 456 | xScale = 1.0 / (grid->xAxis.max() - grid->xAxis.min()); |
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| 457 | xMin = (xAxis.min() - grid->xAxis.min()) * xScale; |
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| 458 | xMax = (xAxis.max() - grid->xAxis.min()) * xScale; |
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| 459 | zScale = 1.0 / (grid->zAxis.max() - grid->zAxis.min()); |
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| 460 | zMin = (zAxis.min() - grid->zAxis.min()) * zScale; |
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| 461 | zMax = (zAxis.max() - grid->zAxis.min()) * zScale; |
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[1111] | 462 | |
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[3492] | 463 | Vector3f* vertices; |
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[1984] | 464 | vertices = createHeightVertices(xMin, zMin, xMax, zMax, _xNum, _yNum, |
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[1111] | 465 | normHeights); |
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| 466 | |
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| 467 | glGenBuffers(1, &_vertexBufferObjectID); |
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| 468 | glBindBuffer(GL_ARRAY_BUFFER, _vertexBufferObjectID); |
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[3492] | 469 | glBufferData(GL_ARRAY_BUFFER, _vertexCount * sizeof(Vector3f), vertices, |
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[1111] | 470 | GL_STATIC_DRAW); |
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[2956] | 471 | glGenBuffers(1, &_texcoordBufferObjectID); |
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| 472 | glBindBuffer(GL_ARRAY_BUFFER, _texcoordBufferObjectID); |
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[1111] | 473 | glBufferData(GL_ARRAY_BUFFER, _vertexCount * sizeof(float) * 3, texcoord, |
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| 474 | GL_STATIC_DRAW); |
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| 475 | glBindBuffer(GL_ARRAY_BUFFER, 0); |
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| 476 | delete [] texcoord; |
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| 477 | |
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[1984] | 478 | if (_contour != NULL) { |
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| 479 | delete _contour; |
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| 480 | _contour = NULL; |
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| 481 | } |
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[1111] | 482 | ContourLineFilter lineFilter; |
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[4612] | 483 | //lineFilter.transferFunction(_transferFunc); |
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[1984] | 484 | _contour = lineFilter.create(0.0f, 1.0f, 10, vertices, _xNum, _yNum); |
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[1111] | 485 | |
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[1984] | 486 | this->createIndexBuffer(_xNum, _yNum, normHeights); |
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[1111] | 487 | delete [] normHeights; |
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[1984] | 488 | delete [] vertices; |
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[1111] | 489 | } |
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[3492] | 490 | |
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| 491 | void |
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| 492 | HeightMap::getWorldSpaceBounds(Vector3f& bboxMin, |
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| 493 | Vector3f& bboxMax) const |
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| 494 | { |
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[4904] | 495 | bboxMin.set(xAxis.min(), yAxis.min(), zAxis.min()); |
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| 496 | bboxMax.set(xAxis.max(), yAxis.max(), zAxis.max()); |
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[3492] | 497 | } |
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