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 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 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);
}