void GeometryApp::loadGeomSource( const geom::Source &source )
{
// The purpose of the TriMesh is to capture a bounding box; without that need we could just instantiate the Batch directly using primitive
TriMesh::Format fmt = TriMesh::Format().positions().normals().texCoords();
if( mShowColors && source.getAvailableAttribs().count( geom::COLOR ) > 0 )
fmt.colors();
TriMesh mesh( source, fmt );
AxisAlignedBox3f bbox = mesh.calcBoundingBox();
mCameraCOI = mesh.calcBoundingBox().getCenter();
mRecenterCamera = true;
if( mSubdivision > 1 )
mesh.subdivide( mSubdivision );
if( mPhongShader )
mPrimitive = gl::Batch::create( mesh, mPhongShader );
if( mWireframeShader )
mPrimitiveWireframe = gl::Batch::create( mesh, mWireframeShader );
vec3 size = bbox.getMax() - bbox.getMin();
float scale = std::max( std::max( size.x, size.y ), size.z ) / 25.0f;
mPrimitiveNormalLines = gl::Batch::create( geom::VertexNormalLines( mesh, scale ), gl::getStockShader( gl::ShaderDef().color() ) );
getWindow()->setTitle( "Geometry - " + to_string( mesh.getNumVertices() ) + " vertices" );
}
void MeshViewApp::setupCamera(bool inTheMiddleOfY)
{
m_camera.setNearClip(0.1f);
m_camera.setFarClip(10000.0f);
AxisAlignedBox3f bbox = m_assimpLoader.getBoundingBox();
Vec3f size = bbox.getSize();
float max = size.x;
max = max < size.y ? size.y : max;
max = max < size.z ? size.z : max;
if(inTheMiddleOfY)
m_camera.setEyePoint(Vec3f(0.0f, size.y / 2, max * 2.0f));
else
m_camera.setEyePoint(Vec3f(0.0f, max, max * 2.0f));
m_camera.setCenterOfInterestPoint(bbox.getCenter());
}
void AxisAlignedBox3f::include( const AxisAlignedBox3f &rhs )
{
Vec3f minB = rhs.getMin();
if(minB.x < mExtents[0].x) mExtents[0].x = minB.x;
if(minB.y < mExtents[0].y) mExtents[0].y = minB.y;
if(minB.z < mExtents[0].z) mExtents[0].z = minB.z;
Vec3f maxB = rhs.getMax();
if(maxB.x > mExtents[1].x) mExtents[1].x = maxB.x;
if(maxB.y > mExtents[1].y) mExtents[1].y = maxB.y;
if(maxB.z > mExtents[1].z) mExtents[1].z = maxB.z;
// update vertices
Vec3f extent( mExtents[1].x - mExtents[0].x, mExtents[1].y - mExtents[0].y, mExtents[1].z - mExtents[0].z );
Vec3f mid( ( mExtents[0].x + mExtents[1].x ) / 2.0f, ( mExtents[0].y + mExtents[1].y ) / 2.0f, ( mExtents[0].z + mExtents[1].z ) / 2.0f );
mVerts[0] = Vec3f( -0.5f, -0.5f, 0.5f ) * extent + mid;
mVerts[1] = Vec3f( 0.5f, -0.5f, 0.5f ) * extent + mid;
mVerts[2] = Vec3f( -0.5f, 0.5f, 0.5f ) * extent + mid;
mVerts[3] = Vec3f( 0.5f, 0.5f, 0.5f ) * extent + mid;
mVerts[4] = Vec3f( -0.5f, 0.5f, -0.5f ) * extent + mid;
mVerts[5] = Vec3f( 0.5f, 0.5f, -0.5f ) * extent + mid;
mVerts[6] = Vec3f( -0.5f, -0.5f, -0.5f ) * extent + mid;
mVerts[7] = Vec3f( 0.5f, -0.5f, -0.5f ) * extent + mid;
}
void ColorCubePoints::draw()
{
// Unit cube with wireframe outline
gl::enableAlphaBlending();
gl::color(0.0f, 0.0f, 0.0f, 0.5f);
gl::drawCube(Vec3f(0.5f, 0.5f, 0.5f), Vec3f(1.0f, 1.0f, 1.0f));
gl::color(0.4f, 0.4f, 0.7f);
gl::drawStrokedCube(Vec3f(0.5f, 0.5f, 0.5f), Vec3f(1.0f, 1.0f, 1.0f));
// Scaled RGB color coordinate system
AxisAlignedBox3f range = getRangeRGB();
gl::pushModelView();
gl::scale(Vec3f(1.0f, 1.0f, 1.0f) / range.getSize());
gl::translate(-range.getMin());
// Point history
gl::enableAdditiveBlending();
glPointSize(3.0f);
glBegin(GL_POINTS);
for (unsigned i = 0; i < mPoints.size(); i++) {
drawColorPoint(range, mPoints[i]);
}
glEnd();
// Local coordinates for latest point
Vec4f local = mLineSolver.worldToLocal * Vec4f(getCurrentPoint(), 1.0f);
// Local coordinates for arbitrary endpoints on the Z axis
Vec4f zMin(0.0f, 0.0f, range.getMin().z, 1.0f);
Vec4f zMax(0.0f, 0.0f, range.getMax().z, 1.0f);
// Convert to world coords and clamp to the AABB to keep the chart tidy
Ray ray((mLineSolver.localToWorld * zMin).xyz(),
(mLineSolver.localToWorld * (zMax - zMin)).xyz());
float intersections[2];
range.intersect(ray, intersections);
// Draw a triangle between the Z axis and current point
gl::color(1.0f, 1.0f, 1.0f);
gl::drawLine(ray.calcPosition(intersections[0]),
ray.calcPosition(intersections[1]));
gl::color(1.0f, 0.0f, 0.0f);
gl::drawLine(ray.calcPosition(intersections[0]),
(mLineSolver.localToWorld * local).xyz());
gl::color(0.0f, 1.0f, 0.0f);
gl::drawLine(ray.calcPosition(intersections[1]),
(mLineSolver.localToWorld * local).xyz());
gl::popModelView();
}
void ColorCubePoints::drawColorPoint(const AxisAlignedBox3f& range, Vec3f p)
{
Vec3f scaled = (p - range.getMin()) / range.getSize();
gl::color(scaled.x, scaled.y, scaled.z);
gl::vertex(p);
}