1 files changed, 57 insertions, 0 deletions
diff --git a/src/arap.cpp b/src/arap.cpp
new file mode 100644
index 0000000..06b8829
--- /dev/null
+++ b/src/arap.cpp
@@ -0,0 +1,57 @@
+#include "arap.h"
+#include "graphics/meshloader.h"
+
+#include <iostream>
+#include <set>
+#include <map>
+#include <vector>
+
+using namespace std;
+using namespace Eigen;
+
+ARAP::ARAP() {}
+
+void ARAP::init(Eigen::Vector3f &coeffMin, Eigen::Vector3f &coeffMax)
+{
+    vector<Vector3f> vertices;
+    vector<Vector3i> triangles;
+
+    // If this doesn't work for you, remember to change your working directory
+    if (MeshLoader::loadTriMesh("meshes/cactus.obj", vertices, triangles)) {
+        m_shape.init(vertices, triangles);
+    }
+
+    // Students, please don't touch this code: get min and max for viewport stuff
+    MatrixX3f all_vertices = MatrixX3f(vertices.size(), 3);
+    int i = 0;
+    for (unsigned long i = 0; i < vertices.size(); ++i) {
+        all_vertices.row(i) = vertices[i];
+    }
+    coeffMin = all_vertices.colwise().minCoeff();
+    coeffMax = all_vertices.colwise().maxCoeff();
+}
+
+// Move an anchored vertex, defined by its index, to targetPosition
+void ARAP::move(int vertex, Vector3f targetPosition)
+{
+    std::vector<Eigen::Vector3f> new_vertices = m_shape.getVertices();
+    const std::unordered_set<int>& anchors = m_shape.getAnchors();
+
+    // TODO: implement ARAP here
+    new_vertices[vertex] = targetPosition;
+
+    // Here are some helpful controls for the application
+    //
+    // - You start in first-person camera mode
+    //   - WASD to move, left-click and drag to rotate
+    //   - R and F to move vertically up and down
+    //
+    // - C to change to orbit camera mode
+    //
+    // - Right-click (and, optionally, drag) to anchor/unanchor points
+    //   - Left-click an anchored point to move it around
+    //
+    // - Minus and equal keys (click repeatedly) to change the size of the vertices
+
+    m_shape.setVertices(new_vertices);
+}