//-----------------------------------------------------------------------
void LightInstanceBatchHW::removeBlendData()
{
VertexData *thisVertexData = mRenderOperation.vertexData;
unsigned short safeSource = 0xFFFF;
const VertexElement* blendIndexElem = thisVertexData->vertexDeclaration->findElementBySemantic(
VES_BLEND_INDICES );
if( blendIndexElem )
{
//save the source in order to prevent the next stage from unbinding it.
safeSource = blendIndexElem->getSource();
// Remove buffer reference
thisVertexData->vertexBufferBinding->unsetBinding( blendIndexElem->getSource() );
}
// Remove blend weights
const VertexElement* blendWeightElem = thisVertexData->vertexDeclaration->findElementBySemantic(
VES_BLEND_WEIGHTS );
if( blendWeightElem && blendWeightElem->getSource() != safeSource )
{
// Remove buffer reference
thisVertexData->vertexBufferBinding->unsetBinding( blendWeightElem->getSource() );
}
thisVertexData->vertexDeclaration->removeElement(VES_BLEND_INDICES);
thisVertexData->vertexDeclaration->removeElement(VES_BLEND_WEIGHTS);
thisVertexData->closeGapsInBindings();
}
/* Functions extracted out of readFromFile to enhance readability. */
bool VertexBufferRoot::_constructFromPly( const std::string& filename )
{
PLYLIBINFO << "Reading PLY file." << std::endl;
boost::progress_display progress( 12 );
VertexData data;
if( _invertFaces )
data.useInvertedFaces();
if( !data.readPlyFile( filename ) )
{
PLYLIBERROR << "Unable to load PLY file." << std::endl;
return false;
}
++progress;
data.calculateNormals();
data.scale( 2.0f );
++progress;
setupTree( data, progress );
++progress;
if( !writeToFile( filename ))
PLYLIBWARN << "Unable to write binary representation." << std::endl;
++progress;
return true;
}
void HEC_FromFaceList::copyFromVertexData(VertexData& vd) {
for(int i = 0; i < vd.getNumVertices(); ++i) {
addVertex(vd.getVertex(i));
}
for(int i = 0; i < vd.getNumQuads(); ++i) {
Quad& q = *vd.getQuadPtr(i);
addQuad(q.a, q.b, q.c, q.d);
}
}
NS_CC_BEGIN
VertexData* VertexData::create()
{
VertexData* result = new (std::nothrow) VertexData();
if(result)
{
result->autorelease();
return result;
}
CC_SAFE_DELETE(result);
return nullptr;
}
void loadObj(const std::string &filename, VertexData &vd, IndexedFaceMesh &mesh, const Vector3r &scale)
{
std::vector<OBJLoader::Vec3f> x;
std::vector<OBJLoader::Vec3f> normals;
std::vector<OBJLoader::Vec2f> texCoords;
std::vector<MeshFaceIndices> faces;
OBJLoader::Vec3f s = { (float)scale[0], (float)scale[1], (float)scale[2] };
OBJLoader::loadObj(filename, &x, &faces, &normals, &texCoords, s);
mesh.release();
const unsigned int nPoints = (unsigned int)x.size();
const unsigned int nFaces = (unsigned int)faces.size();
const unsigned int nTexCoords = (unsigned int)texCoords.size();
mesh.initMesh(nPoints, nFaces * 2, nFaces);
vd.reserve(nPoints);
for (unsigned int i = 0; i < nPoints; i++)
{
vd.addVertex(Vector3r(x[i][0], x[i][1], x[i][2]));
}
for (unsigned int i = 0; i < nTexCoords; i++)
{
mesh.addUV(texCoords[i][0], texCoords[i][1]);
}
for (unsigned int i = 0; i < nFaces; i++)
{
// Reduce the indices by one
int posIndices[3];
int texIndices[3];
for (int j = 0; j < 3; j++)
{
posIndices[j] = faces[i].posIndices[j] - 1;
if (nTexCoords > 0)
{
texIndices[j] = faces[i].texIndices[j] - 1;
mesh.addUVIndex(texIndices[j]);
}
}
mesh.addFace(&posIndices[0]);
}
mesh.buildNeighbors();
mesh.updateNormals(vd, 0);
mesh.updateVertexNormals(vd);
LOG_INFO << "Number of triangles: " << nFaces;
LOG_INFO << "Number of vertices: " << nPoints;
}
/* Begin kd-tree setup, go through full range starting with x axis. */
void VertexBufferRoot::setupTree( VertexData& data )
{
// data is VertexData, _data is VertexBufferData
_data.clear();
const Axis axis = data.getLongestAxis( 0, data.triangles.size() );
VertexBufferNode::setupTree( data, 0, data.triangles.size(),
axis, 0, _data );
VertexBufferNode::updateBoundingSphere();
VertexBufferNode::updateRange();
#if 0
// re-test all points to be in the bounding sphere
Vertex center( _boundingSphere.array );
float radius = _boundingSphere.w();
float radiusSquared = radius * radius;
for( size_t offset = 0; offset < _data.vertices.size(); ++offset )
{
const Vertex& vertex = _data.vertices[ offset ];
const Vertex centerToPoint = vertex - center;
const float distanceSquared = centerToPoint.squared_length();
EQASSERTINFO( distanceSquared <= radiusSquared,
distanceSquared << " > " << radiusSquared );
}
#endif
}
void send_attribute(ShaderAvailableAttributes attr,
const VertexData& data,
EnabledMethod exists_on_data_predicate,
OffsetMethod offset_func) {
int32_t loc = (int32_t) attr;
auto get_has_attribute = std::bind(exists_on_data_predicate, std::reference_wrapper<const VertexData>(data));
if(get_has_attribute()) {
auto get_offset = std::bind(offset_func, std::reference_wrapper<const VertexData>(data));
GLCheck(glEnableVertexAttribArray, loc);
GLCheck(glVertexAttribPointer,
loc,
SHADER_ATTRIBUTE_SIZES.find(attr)->second,
GL_FLOAT,
GL_FALSE,
data.stride(),
BUFFER_OFFSET(get_offset())
);
} else {
//L_WARN_ONCE(_u("Couldn't locate attribute on the mesh: {0}").format(attr));
}
}
/* Continue kd-tree setup, create intermediary or leaf nodes as required. */
void VertexBufferNode::setupTree( VertexData& data, const Index start,
const Index length, const Axis axis,
const size_t depth,
VertexBufferData& globalData,
boost::progress_display& progress )
{
data.sort( start, length, axis );
const Index median = start + ( length / 2 );
// left child will include elements smaller than the median
const Index leftLength = length / 2;
const bool subdivideLeft = _subdivide( leftLength, depth );
if( subdivideLeft )
_left = new VertexBufferNode;
else
_left = new VertexBufferLeaf( globalData );
// right child will include elements equal to or greater than the median
const Index rightLength = ( length + 1 ) / 2;
const bool subdivideRight = _subdivide( rightLength, depth );
if( subdivideRight )
_right = new VertexBufferNode;
else
_right = new VertexBufferLeaf( globalData );
// move to next axis and continue contruction in the child nodes
const Axis newAxisLeft = subdivideLeft ?
data.getLongestAxis( start , leftLength ) : AXIS_X;
const Axis newAxisRight = subdivideRight ?
data.getLongestAxis( median, rightLength ) : AXIS_X;
static_cast< VertexBufferNode* >
( _left )->setupTree( data, start, leftLength, newAxisLeft, depth+1,
globalData, progress );
static_cast< VertexBufferNode* >
( _right )->setupTree( data, median, rightLength, newAxisRight, depth+1,
globalData, progress );
if( depth == 3 )
++progress;
}
Sphere::Sphere( bool fullSphere, byte numSubDiv, float dim )
{
setPrimitiveType( PrimitiveType::Triangles );
VertexData position;
buildGeometry( fullSphere, numSubDiv, position, dim );
// Build Texture Coordinates.
BoundingBox box;
for( size_t i = 0; i < position.size(); i++ )
{
const Vector3& v = position[i];
box.add(v);
}
Vector3 center = box.getCenter();
std::vector<Vector3> texCoords;
for( size_t i = 0; i < position.size(); i++ )
{
const Vector3& vert = position[i];
Vector3 d = vert-center;
d.normalize();
// Conveert to spherical coordinates.
//float t = d.z / sqrt(d.x*d.x+d.y*d.y+d.z*d.z);
//float delta = acos(t);
//float phi = atan2(d.y, d.x);
//float u = delta / Math::PI;
//float v = phi / 2*Math::PI;
float u = std::asin(d.x) / PI + 0.5f;
float v = std::asin(d.y) / PI + 0.5f;
texCoords.push_back( Vector2(u, v) );
}
gb->set( VertexAttribute::Position, position );
gb->set( VertexAttribute::TexCoord0, texCoords );
}
/* Functions extracted out of readFromFile to enhance readability. */
bool VertexBufferRoot::_constructFromPly( const std::string& filename )
{
MESHINFO << "Constructing new from PLY file." << std::endl;
VertexData data;
if( _invertFaces )
data.useInvertedFaces();
if( !data.readPlyFile( filename ) )
{
MESHERROR << "Unable to load PLY file." << std::endl;
return false;
}
data.calculateNormals();
data.scale( 2.0f );
setupTree( data );
if( !writeToFile( filename ))
MESHWARN << "Unable to write binary representation." << std::endl;
return true;
}
void Sphere::subdivide(const Vector3& v1, const Vector3& v2,
const Vector3& v3, byte depth, VertexData& pos)
{
if (depth == 0)
{
pos.push_back( v1 );
pos.push_back( v2 );
pos.push_back( v3 );
return;
}
Vector3 v12 = (v1+v2).normalize();
Vector3 v23 = (v2+v3).normalize();
Vector3 v31 = (v3+v1).normalize();
subdivide(v1, v12, v31, depth-1, pos);
subdivide(v2, v23, v12, depth-1, pos);
subdivide(v3, v31, v23, depth-1, pos);
subdivide(v12, v23, v31, depth-1, pos);
}
/* Begin kd-tree setup, go through full range starting with x axis. */
void VertexBufferRoot::setupTree( VertexData& data,
boost::progress_display& progress )
{
// data is VertexData, _data is VertexBufferData
_data.clear();
const Axis axis = data.getLongestAxis( 0, data.triangles.size() );
VertexBufferNode::setupTree( data, 0, data.triangles.size(),
axis, 0, _data, progress );
VertexBufferNode::updateBoundingSphere();
VertexBufferNode::updateRange();
}
void Sphere::buildGeometry( bool fullSphere, byte numSubDiv,
VertexData& pos, float dim)
{
GeometryBufferPtr gb = AllocateThis(GeometryBuffer);
setGeometryBuffer(gb);
// Rotate the vertices, else the sphere is not properly aligned.
Matrix4x3 rot = Matrix4x3::createRotation( EulerAngles(-60, 0, 0) );
for( size_t i = 0; i < ARRAY_SIZE(IcoDomeIndices); i++ )
{
const byte* p = IcoDomeIndices[i];
Vector3 v1( IcoVertices[p[0]][0], IcoVertices[p[0]][2], IcoVertices[p[0]][1] );
Vector3 v2( IcoVertices[p[1]][0], IcoVertices[p[1]][2], IcoVertices[p[1]][1] );
Vector3 v3( IcoVertices[p[2]][0], IcoVertices[p[2]][2], IcoVertices[p[2]][1] );
subdivide( rot*v1, rot*v2, rot*v3, numSubDiv, pos );
}
// If we don't want a full sphere, we return here.
if( fullSphere )
{
// These indices are the bottom of the sphere.
for( size_t i = 0; i < ARRAY_SIZE(IcoSphereIndices); i++ )
{
const byte* p = IcoSphereIndices[i];
Vector3 v1( IcoVertices[p[0]][0], IcoVertices[p[0]][2], IcoVertices[p[0]][1] );
Vector3 v2( IcoVertices[p[1]][0], IcoVertices[p[1]][2], IcoVertices[p[1]][1] );
Vector3 v3( IcoVertices[p[2]][0], IcoVertices[p[2]][2], IcoVertices[p[2]][1] );
subdivide( rot*v1, rot*v2, rot*v3, numSubDiv, pos );
}
}
// Scale all the vertices.
for( size_t i = 0; i < pos.size(); i++ )
{
Vector3& vec = pos[i];
vec *= dim;
}
}
/* Finish partial setup - sort, reindex and merge into global data. */
void VertexBufferLeaf::setupTree( VertexData& data, const Index start,
const Index length, const Axis axis,
const size_t depth,
VertexBufferData& globalData )
{
data.sort( start, length, axis );
_vertexStart = globalData.vertices.size();
_vertexLength = 0;
_indexStart = globalData.indices.size();
_indexLength = 0;
const bool hasColors = ( data.colors.size() > 0 );
// stores the new indices (relative to _start)
map< Index, ShortIndex > newIndex;
for( Index t = 0; t < length; ++t )
{
for( Index v = 0; v < 3; ++v )
{
Index i = data.triangles[start + t][v];
if( newIndex.find( i ) == newIndex.end() )
{
newIndex[i] = _vertexLength++;
// assert number of vertices does not exceed SmallIndex range
MESHASSERT( _vertexLength );
globalData.vertices.push_back( data.vertices[i] );
if( hasColors )
globalData.colors.push_back( data.colors[i] );
globalData.normals.push_back( data.normals[i] );
}
globalData.indices.push_back( newIndex[i] );
++_indexLength;
}
}
#ifndef NDEBUG
MESHINFO << "VertexBufferLeaf::setupTree"
<< "( " << _indexStart << ", " << _indexLength << "; start "
<< _vertexStart << ", " << _vertexLength << " vertices)." << endl;
#endif
}
void VertexBuffer::alloc(const VertexData &data, GpuBufferUsageType usage)
{
assert(data.getFormat() == m_format);
alloc(data.getVerticesCount(), data.getRawData(), usage);
}
// @todo templetize
void Box::create(float width, float height, float depth, VertexData& vd) {
float x = width * 0.5;
float y = height * 0.5;
float z = depth * 0.5;
// back
// -------------------
vd.addVertex(x,-y,-z);
vd.addVertex(-x,-y,-z);
vd.addVertex(-x,y,-z);
vd.addVertex(x,y,-z);
// vd.addVertex(-x,-y,-z);
// vd.addVertex(-x, y,-z);
// vd.addVertex(x,y,-z);
// vd.addVertex(x,-y,-z);
vd.addTexCoord(0,0);
vd.addTexCoord(1,0);
vd.addTexCoord(1,1);
vd.addTexCoord(0,1);
vd.addNormal(0,0,-1);
vd.addNormal(0,0,-1);
vd.addNormal(0,0,-1);
vd.addNormal(0,0,-1);
vd.addQuad(0,1,2,3);
// left
// -------------------
vd.addVertex(-x, -y, -z);
vd.addVertex(-x, -y, z);
vd.addVertex(-x, y, z);
vd.addVertex(-x, y, -z);
// vd.addVertex(-x, -y, -z);
// vd.addVertex(-x, -y, z);
// vd.addVertex(-x, y, z);
// vd.addVertex(-x, y, -z);
vd.addTexCoord(0,0);
vd.addTexCoord(1,0);
vd.addTexCoord(1,1);
vd.addTexCoord(0,1);
vd.addNormal(-1,0,0);
vd.addNormal(-1,0,0);
vd.addNormal(-1,0,0);
vd.addNormal(-1,0,0);
vd.addQuad(4,5,6,7);
// right
// -------------------
vd.addVertex(x, -y, z);
vd.addVertex(x, -y, -z);
vd.addVertex(x, y, -z);
vd.addVertex(x, y, z);
// vd.addVertex(x, -y, -z);
// vd.addVertex(x, -y, z);
// vd.addVertex(x, y, z);
// vd.addVertex(x, y, -z);
vd.addTexCoord(0,0);
vd.addTexCoord(1,0);
vd.addTexCoord(1,1);
vd.addTexCoord(0,1);
vd.addNormal(1,0,0);
vd.addNormal(1,0,0);
vd.addNormal(1,0,0);
vd.addNormal(1,0,0);
vd.addQuad(8,9,10,11);
// front
// -------------------
vd.addVertex(-x, -y, z);
vd.addVertex(x, -y, z);
vd.addVertex(x, y, z);
vd.addVertex(-x, y, z);
// vd.addVertex(-x, -y, z);
// vd.addVertex(-x, y, z);
// vd.addVertex(x, y, z);
// vd.addVertex(x, -y, z);
vd.addTexCoord(0,0);
vd.addTexCoord(1,0);
vd.addTexCoord(1,1);
vd.addTexCoord(0,1);
vd.addNormal(0,0,1);
vd.addNormal(0,0,1);
vd.addNormal(0,0,1);
vd.addNormal(0,0,1);
vd.addQuad(12,13,14,15);
// bottom
// -------------------
vd.addVertex(-x, -y, -z);
vd.addVertex(-x, -y, z);
vd.addVertex(x, -y, z);
vd.addVertex(x, -y, -z);
// vd.addVertex(-x, -y, z);
// vd.addVertex(x, -y, z);
// vd.addVertex(x, -y, -z);
// vd.addVertex(-x, -y, -z);
vd.addTexCoord(0,0);
vd.addTexCoord(1,0);
vd.addTexCoord(1,1);
vd.addTexCoord(0,1);
vd.addNormal(0,-1,0);
vd.addNormal(0,-1,0);
vd.addNormal(0,-1,0);
vd.addNormal(0,-1,0);
vd.addQuad(16,17,18,19);
// top
// -------------------
vd.addVertex(-x, y, z);
vd.addVertex(x, y, z);
vd.addVertex(x, y, -z);
vd.addVertex(-x, y, -z);
// vd.addVertex(-x, y, -z);
// vd.addVertex(-x, y, z);
// vd.addVertex(x, y, z);
// vd.addVertex(x, y, -z);
vd.addTexCoord(0,0);
vd.addTexCoord(1,0);
vd.addTexCoord(1,1);
vd.addTexCoord(0,1);
vd.addNormal(0,1,0);
vd.addNormal(0,1,0);
vd.addNormal(0,1,0);
vd.addNormal(0,1,0);
vd.addQuad(20,21,22,23);
}
void UVSphere::create(float radius, int numSlices, int numStacks, VertexData& vertex_data) {
slices = numSlices;
stacks = numStacks;
// this code works; though as with all 4 other tested methods I get a wierd
// lines when using a texture. See git history for old code.
for (int j = 0; j < stacks; j++) {
double latitude1 = (PI/stacks) * j - PI/2;
double latitude2 = (PI/stacks) * (j+1) -PI/2;
double sin1 = sin(latitude1);
double cos1 = cos(latitude1);
double sin2 = sin(latitude2);
double cos2 = cos(latitude2);
for (int i = 0; i <= slices; i++) {
double longitude = (2*PI/slices) * i;
double sin_long = sin(longitude);
double cos_long = cos(longitude);
double x1 = cos_long * cos1;
double y1 = sin_long * cos1;
double z1 = sin1;
double x2 = cos_long * cos2;
double y2 = sin_long * cos2;
double z2 = sin2;
vertex_data.addVertex(Vec3(x1 * radius, y1*radius, z1 * radius));
vertex_data.addTexCoord(1-1.0/slices * i, 1.0/stacks * j);
vertex_data.addNormal(Vec3(x1, y1, z1));
vertex_data.addVertex(Vec3(x2 * radius, y2*radius, z2 * radius));
vertex_data.addTexCoord(1-1.0/slices * i, 1.0/stacks * (j+1));
vertex_data.addNormal(Vec3(x2, y2, z2));
}
}
int n = vertex_data.getNumVertices();
for(int i = 0; i < n-2; i+=2) {
vertex_data.addQuad(i+1, i+3, i+2, i);
}
/*
int nv = stacks;
int nu = slices;
vector<Vec3> vertices;
vector<Vec2> texcoords;
vertices.push_back(Vec3(0,0,radius));
vertices.push_back(Vec3(0,0,-radius));
for(int i = 0; i < stacks; ++i) {
float t = i / (float) stacks;
float sin_v = sin(TWO_PI * t);
float cos_v = cos(TWO_PI * t);
for(int j = 1; j < slices; ++j) {
float s = j / (float) slices;
float sin_u = sin(PI * s);
float cos_u = cos(PI * s);
vertices.push_back(Vec3(
cos_v * sin_u * radius
,sin_v * sin_u * radius
,cos_u * radius
));
texcoords.push_back(Vec2(s,t));
}
}
vector<int> indices;
for(int k = 0; k < nv; ++k) {
indices.push_back(0);
indices.push_back(2 + k * (nu - 1));
indices.push_back(2 + ((k + 1) % nv) * (nu - 1));
indices.push_back(1);
indices.push_back(((k + 1) % nv) * (nu - 1) + nu);
indices.push_back(k * (nu - 1) + nu);
for(int l = 0; l < (nu-2); ++l) {
indices.push_back(2 + k * (nu - 1) + l);
indices.push_back(2 + k * (nu - 1) + l + 1);
indices.push_back( 2 + ((k + 1) % nv) * (nu - 1) + l);
indices.push_back(2 + k * (nu - 1) + l + 1);
indices.push_back(2 + ((k + 1) % nv) * (nu - 1) + l + 1);
indices.push_back(2 + ((k + 1) % nv) * (nu - 1) + l);
}
}
for(int i = 0; i < indices.size(); ++i) {
vertex_data.addVertex(vertices[indices[i]]);
vertex_data.addTexCoord(texcoords[indices[i]]);
}
printf("Num indices: %d\n", indices.size());
*/
/*
int num_vertices = (stacks + 1) * (slices + 1);
vector<Vec3>vertices;
vector<Vec2>texcoords;
vertices.assign(num_vertices, Vec3());
texcoords.assign(num_vertices, Vec2());
// calculate vertex + texcoords
for(float stack = 0; stack <= stacks; ++stack) {
float theta = stack/(stacks) * PI;
float sin_theta = sinf(theta);
float cos_theta = cosf(theta);
for(float slice = 0; slice <= slices; ++slice) {
float phi = slice/(slices) * TWO_PI;
float sin_phi = sinf(phi);
float cos_phi = cosf(phi);
float x = sin_theta * cos_phi;
float y = sin_theta * sin_phi;
float z = cos_theta;
float u = (sin_theta * cos_phi * 0.5) + 0.5;
float v = (sin_theta * sin_phi * 0.5) + 0.5;
int index = (int)(slice + (stack * (slices+1)));
vertices[index].set(x * radius,y * radius, z * radius);
texcoords[index].set(u,v);
}
}
// Create the quads
int dx = 0;
int num_index_elements = (stacks) * (slices) * 4;
num_index_elements = (stacks) * (slices) * 4;
int* index_elements = new int[num_index_elements];
for(int i = 0; i < slices; ++i) {
for(int j = 0; j < stacks; ++j) {
index_elements[dx++] = getAt(i,j);
index_elements[dx++] = getAt(i+1,j);
index_elements[dx++] = getAt(i+1,j+1);
index_elements[dx++] = getAt(i,j+1);
}
}
for(int i = 0; i < num_index_elements;++i) {
Vec3 v = vertices[index_elements[i]];
vertex_data.addVertex(v);
vertex_data.addTexCoord(texcoords[index_elements[i]]);
}
*/
}
Element::Element(VertexData vertex_data, std::shared_ptr<Skin> skin, const unsigned int layer) : Renderable(vertex_data.generateVertexArrayObject(), vertex_data), skin(skin), anchor_point(glm::vec2(0.0, 0.0)), width(0), height(0), text_padding(0), cursor_within(false), color(glm::vec4(1.0)), layer(layer) {
setShader(skin->getShader());
addTexture(0, "skin0", skin->getTexture());
getTransform()->translate(glm::vec3(0.0, 0.0, -(float)layer));
}
void IcoSphere::create(int detail, float radius, VertexData& vertex_data) {
// how we got these values:
// http://www.bobchapman.co.uk/The_Geometry_of_the_Singapore_Ball.pdf
float x = 0.525731112119133606;
float z = 0.850650808352039932;
// default icosahedron
vector<Vec3> tmp_verts;
tmp_verts.push_back(Vec3( -x, 0, z ));
tmp_verts.push_back(Vec3( x, 0, z ));
tmp_verts.push_back(Vec3( -x, 0, -z ));
tmp_verts.push_back(Vec3( x, 0, -z ));
tmp_verts.push_back(Vec3( 0, z, x ));
tmp_verts.push_back(Vec3( 0, z, -x ));
tmp_verts.push_back(Vec3( 0, -z, x ));
tmp_verts.push_back(Vec3( 0, -z, -z ));
tmp_verts.push_back(Vec3( z, x, 0 ));
tmp_verts.push_back(Vec3( -z, x, 0 ));
tmp_verts.push_back(Vec3( z, -x, 0 ));
tmp_verts.push_back(Vec3( -z, -x, 0 ));
// triangle indices
int idxs[] = {
1,4,0, 4,9,0, 4,5,9, 8,5,4, 1,8,4,
1,10,8, 10,3,8, 8,3,5, 3,2,5, 3,7,2,
3,10,7, 10,6,7, 6,11,7, 6,0,11, 6,1,0,
10,1,6, 11,0,9, 2,11,9, 5,2,9, 11,2,7
};
int num = 4 * 5 * 3;
for(int i = 0; i < num; ++i) {
vertex_data.indices.push_back(idxs[i]);
}
if(detail > 8) {
detail = 8;
}
else if (detail < 0) {
detail = 0;
}
// iterator over the number of detail level and
for(int i = 0; i < detail; ++i) {
vector<int> indices2;
vector<Vec3> tmp_verts2;
for(int j = 0, idx = 0; j < vertex_data.indices.size(); j+=3) {
// add triangle indices
indices2.push_back(idx++);
indices2.push_back(idx++);
indices2.push_back(idx++);
indices2.push_back(idx++);
indices2.push_back(idx++);
indices2.push_back(idx++);
indices2.push_back(idx++);
indices2.push_back(idx++);
indices2.push_back(idx++);
indices2.push_back(idx++);
indices2.push_back(idx++);
indices2.push_back(idx++);
// split triangle.
Vec3 v1 = tmp_verts[vertex_data.indices[j+0]];
Vec3 v2 = tmp_verts[vertex_data.indices[j+1]];
Vec3 v3 = tmp_verts[vertex_data.indices[j+2]];
v1.normalize();
v2.normalize();
v3.normalize();
Vec3 a = (v1 + v2) * 0.5f;
Vec3 b = (v2 + v3) * 0.5f;
Vec3 c = (v3 + v1) * 0.5f;
a.normalize();
b.normalize();
c.normalize();
tmp_verts2.push_back(v1);
tmp_verts2.push_back(a);
tmp_verts2.push_back(c);
tmp_verts2.push_back(a);
tmp_verts2.push_back(v2);
tmp_verts2.push_back(b);
tmp_verts2.push_back(a);
tmp_verts2.push_back(b);
tmp_verts2.push_back(c);
tmp_verts2.push_back(c);
tmp_verts2.push_back(b);
tmp_verts2.push_back(v3);
}
tmp_verts = tmp_verts2;
vertex_data.indices = indices2;
}
vector<Vec3>::iterator it = tmp_verts.begin();
while(it != tmp_verts.end()) {
vertex_data.addVertex((*it) * radius);
++it;
}
// add the triangles
size_t len = vertex_data.indices.size();
for(int i = 0; i < len; i += 3) {
vertex_data.addTriangle(
vertex_data.indices[i]
,vertex_data.indices[i+1]
,vertex_data.indices[i+2]
);
}
}