void MeshDecimationApp::guiVertexCountSlider()
{
if (m_curLoadingMeshIdx == 0)
return;
ImGui::Text("- Vertex Count -");
auto& collapsedEdges = m_curMesh->collapsedEdges;
int maxVertexCount = int(m_curMesh->originalEdgeMesh->getVertices().size());
int minVertexCount = int(maxVertexCount - m_curMesh->collapsedEdges.size());
ImGui::SliderInt("", &m_curVertexCount, minVertexCount, maxVertexCount);
ImGui::SameLine(); ShowHelpMarker("CTRL+click to input value.");
m_curVertexCount = math::clamp(m_curVertexCount, minVertexCount, maxVertexCount);
static int lastVertexCount = -1;
int reductionCount = maxVertexCount - m_curVertexCount;
// To allow interactive speeds collapse candidates are cached for each mesh during program startup.
// Upon slider interaction the original mesh is restored and reduced to the desired vertex count.
// This is still an expensive process and won't work interactively for meshes with millions of vertices.
if (lastVertexCount != m_curVertexCount)
{
m_reducibleMesh = *m_curMesh->originalEdgeMesh;
for (int i = 0; i < reductionCount; ++i)
m_reducibleMesh.collapse(collapsedEdges[i]);
m_phongShadedMesh.setSubMesh(m_reducibleMesh.getReducedSubMesh(), 0);
m_phongShadedMesh.finalize();
createFlatShadedMesh();
lastVertexCount = m_curVertexCount;
}
}
void FaceDetectorModule::DrawGUI(){
if(showGUI){
ui::Begin("Face Detector", &showGUI, ImGuiWindowFlags_AlwaysAutoResize);
ui::Checkbox("Enabled", &enabled);
ui::Separator();
if(!enabled) ui::PushStyleVar(ImGuiStyleVar_Alpha, 0.2); //Push disabled style
ui::SliderFloat("Scale", &imageScale, 0.01, 1.00);
ShowHelpMarker("Higher values give more accurate results, but run much slower.");
if(!enabled) ui::PopStyleVar(); //Pop disabled style
ui::End();
}
}
