X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fshape.cpp;h=615b8f9cc719088d8ff405e3638b9ce4312d4918;hb=8acc3f990f1a5ee00471f72c150b407164149f2d;hp=e974d068c0d494cf3c051b980a63e3b31837c826;hpb=b79bc060068daf80c707f7ca08cb40a716367784;p=blank.git

diff --git a/src/shape.cpp b/src/shape.cpp
index e974d06..615b8f9 100644
--- a/src/shape.cpp
+++ b/src/shape.cpp
@@ -3,102 +3,389 @@
 
 namespace blank {
 
+NullShape::NullShape()
+: Shape(0, 0, 0, 0) {
+
+}
+
+void NullShape::Vertices(
+	std::vector<glm::vec3> &,
+	std::vector<glm::vec3> &,
+	std::vector<Model::Index> &,
+	const glm::vec3 &,
+	Model::Index
+) const {
+
+}
+
+void NullShape::Outline(
+	std::vector<glm::vec3> &,
+	std::vector<OutlineModel::Index> &,
+	const glm::vec3 &,
+	OutlineModel::Index
+) const {
+
+}
+
+bool NullShape::Intersects(
+	const Ray &,
+	const glm::mat4 &,
+	float &, glm::vec3 &
+) const {
+	return false;
+}
+
+
 CuboidShape::CuboidShape(const AABB &b)
-: Shape()
+: Shape(24, 36, 8, 24)
 , bb(b) {
 	bb.Adjust();
 }
 
+void CuboidShape::Vertices(
+	std::vector<glm::vec3> &vtx,
+	std::vector<glm::vec3> &norm,
+	std::vector<Model::Index> &index,
+	const glm::vec3 &pos,
+	Model::Index idx
+) const {
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.max.z); // front
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.max.z);
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.max.z);
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.max.z);
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.min.z); // back
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.min.z);
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.min.z);
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.min.z);
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.min.z); // top
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.max.z);
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.min.z);
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.max.z);
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.min.z); // bottom
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.min.z);
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.max.z);
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.max.z);
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.min.z); // left
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.max.z);
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.min.z);
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.max.z);
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.min.z); // right
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.min.z);
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.max.z);
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.max.z);
+
+	norm.insert(norm.end(), 4, glm::vec3( 0.0f,  0.0f,  1.0f)); // front
+	norm.insert(norm.end(), 4, glm::vec3( 0.0f,  0.0f, -1.0f)); // back
+	norm.insert(norm.end(), 4, glm::vec3( 0.0f,  1.0f,  0.0f)); // top
+	norm.insert(norm.end(), 4, glm::vec3( 0.0f, -1.0f,  0.0f)); // bottom
+	norm.insert(norm.end(), 4, glm::vec3(-1.0f,  0.0f,  0.0f)); // left
+	norm.insert(norm.end(), 4, glm::vec3( 1.0f,  0.0f,  0.0f)); // right
 
-size_t CuboidShape::VertexCount() const {
-	return 36;
+	index.emplace_back(idx +  0); // front
+	index.emplace_back(idx +  1);
+	index.emplace_back(idx +  2);
+	index.emplace_back(idx +  2);
+	index.emplace_back(idx +  1);
+	index.emplace_back(idx +  3);
+	index.emplace_back(idx +  4); // back
+	index.emplace_back(idx +  5);
+	index.emplace_back(idx +  6);
+	index.emplace_back(idx +  6);
+	index.emplace_back(idx +  5);
+	index.emplace_back(idx +  7);
+	index.emplace_back(idx +  8); // top
+	index.emplace_back(idx +  9);
+	index.emplace_back(idx + 10);
+	index.emplace_back(idx + 10);
+	index.emplace_back(idx +  9);
+	index.emplace_back(idx + 11);
+	index.emplace_back(idx + 12); // bottom
+	index.emplace_back(idx + 13);
+	index.emplace_back(idx + 14);
+	index.emplace_back(idx + 14);
+	index.emplace_back(idx + 13);
+	index.emplace_back(idx + 15);
+	index.emplace_back(idx + 16); // left
+	index.emplace_back(idx + 17);
+	index.emplace_back(idx + 18);
+	index.emplace_back(idx + 18);
+	index.emplace_back(idx + 17);
+	index.emplace_back(idx + 19);
+	index.emplace_back(idx + 20); // right
+	index.emplace_back(idx + 21);
+	index.emplace_back(idx + 22);
+	index.emplace_back(idx + 22);
+	index.emplace_back(idx + 21);
+	index.emplace_back(idx + 23);
 }
 
-void CuboidShape::Vertices(std::vector<glm::vec3> &out, const glm::vec3 &pos) const {
-	out.reserve(36);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.max.z); // front
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.min.z); // back
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.min.z); // top
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.min.z); // bottom
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.min.z); // left
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.min.z); // right
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.max.z);
+void CuboidShape::Outline(
+	std::vector<glm::vec3> &vtx,
+	std::vector<OutlineModel::Index> &index,
+	const glm::vec3 &pos,
+	OutlineModel::Index idx
+) const {
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.min.z); // back
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.min.z);
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.min.z);
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.min.z);
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.max.z); // front
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.max.z);
+	vtx.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.max.z);
+	vtx.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.max.z);
+
+	index.emplace_back(idx +  0); // back
+	index.emplace_back(idx +  1);
+	index.emplace_back(idx +  1);
+	index.emplace_back(idx +  3);
+	index.emplace_back(idx +  3);
+	index.emplace_back(idx +  2);
+	index.emplace_back(idx +  2);
+	index.emplace_back(idx +  0);
+	index.emplace_back(idx +  4); // front
+	index.emplace_back(idx +  5);
+	index.emplace_back(idx +  5);
+	index.emplace_back(idx +  7);
+	index.emplace_back(idx +  7);
+	index.emplace_back(idx +  6);
+	index.emplace_back(idx +  6);
+	index.emplace_back(idx +  4);
+	index.emplace_back(idx +  0); // sides
+	index.emplace_back(idx +  4);
+	index.emplace_back(idx +  1);
+	index.emplace_back(idx +  5);
+	index.emplace_back(idx +  2);
+	index.emplace_back(idx +  6);
+	index.emplace_back(idx +  3);
+	index.emplace_back(idx +  7);
+}
+
+bool CuboidShape::Intersects(
+	const Ray &ray,
+	const glm::mat4 &M,
+	float &dist, glm::vec3 &normal
+) const {
+	return Intersection(ray, bb, M, &dist, &normal);
 }
 
-void CuboidShape::Normals(std::vector<glm::vec3> &out) const {
-	out.reserve(36);
-	out.insert(out.end(), 6, glm::vec3( 0.0f,  0.0f,  1.0f)); // front
-	out.insert(out.end(), 6, glm::vec3( 0.0f,  0.0f, -1.0f)); // back
-	out.insert(out.end(), 6, glm::vec3( 0.0f,  1.0f,  0.0f)); // top
-	out.insert(out.end(), 6, glm::vec3( 0.0f, -1.0f,  0.0f)); // bottom
-	out.insert(out.end(), 6, glm::vec3(-1.0f,  0.0f,  0.0f)); // left
-	out.insert(out.end(), 6, glm::vec3( 1.0f,  0.0f,  0.0f)); // right
+
+StairShape::StairShape(const AABB &bb, const glm::vec2 &clip)
+: Shape(40, 60, 12, 36)
+, top({ { clip.x, clip.y, bb.min.z }, bb.max })
+, bot({ bb.min, { bb.max.x, clip.y, bb.max.z } }) {
+
 }
 
 
-size_t CuboidShape::OutlineCount() const {
-	return 24;
+void StairShape::Vertices(
+	std::vector<glm::vec3> &vtx,
+	std::vector<glm::vec3> &norm,
+	std::vector<Model::Index> &index,
+	const glm::vec3 &pos,
+	Model::Index idx
+) const {
+	vtx.emplace_back(pos.x + top.min.x, pos.y + top.min.y, pos.z + top.max.z); // front, upper
+	vtx.emplace_back(pos.x + top.max.x, pos.y + top.min.y, pos.z + top.max.z);
+	vtx.emplace_back(pos.x + top.min.x, pos.y + top.max.y, pos.z + top.max.z);
+	vtx.emplace_back(pos.x + top.max.x, pos.y + top.max.y, pos.z + top.max.z);
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.min.y, pos.z + bot.max.z); // front, lower
+	vtx.emplace_back(pos.x + bot.max.x, pos.y + bot.min.y, pos.z + bot.max.z);
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.max.y, pos.z + bot.max.z);
+	vtx.emplace_back(pos.x + bot.max.x, pos.y + bot.max.y, pos.z + bot.max.z);
+	vtx.emplace_back(pos.x + top.min.x, pos.y + top.min.y, pos.z + top.min.z); // back, upper
+	vtx.emplace_back(pos.x + top.min.x, pos.y + top.max.y, pos.z + top.min.z);
+	vtx.emplace_back(pos.x + top.max.x, pos.y + top.min.y, pos.z + top.min.z);
+	vtx.emplace_back(pos.x + top.max.x, pos.y + top.max.y, pos.z + top.min.z);
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.min.y, pos.z + bot.min.z); // back, lower
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.max.y, pos.z + bot.min.z);
+	vtx.emplace_back(pos.x + bot.max.x, pos.y + bot.min.y, pos.z + bot.min.z);
+	vtx.emplace_back(pos.x + bot.max.x, pos.y + bot.max.y, pos.z + bot.min.z);
+	vtx.emplace_back(pos.x + top.min.x, pos.y + top.max.y, pos.z + top.min.z); // top, upper
+	vtx.emplace_back(pos.x + top.min.x, pos.y + top.max.y, pos.z + top.max.z);
+	vtx.emplace_back(pos.x + top.max.x, pos.y + top.max.y, pos.z + top.min.z);
+	vtx.emplace_back(pos.x + top.max.x, pos.y + top.max.y, pos.z + top.max.z);
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.max.y, pos.z + bot.min.z); // top, lower
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.max.y, pos.z + bot.max.z);
+	vtx.emplace_back(pos.x + top.min.x, pos.y + bot.max.y, pos.z + bot.min.z);
+	vtx.emplace_back(pos.x + top.min.x, pos.y + bot.max.y, pos.z + bot.max.z);
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.min.y, pos.z + bot.min.z); // bottom
+	vtx.emplace_back(pos.x + bot.max.x, pos.y + bot.min.y, pos.z + bot.min.z);
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.min.y, pos.z + bot.max.z);
+	vtx.emplace_back(pos.x + bot.max.x, pos.y + bot.min.y, pos.z + bot.max.z);
+	vtx.emplace_back(pos.x + top.min.x, pos.y + top.min.y, pos.z + top.min.z); // left, upper
+	vtx.emplace_back(pos.x + top.min.x, pos.y + top.min.y, pos.z + top.max.z);
+	vtx.emplace_back(pos.x + top.min.x, pos.y + top.max.y, pos.z + top.min.z);
+	vtx.emplace_back(pos.x + top.min.x, pos.y + top.max.y, pos.z + top.max.z);
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.min.y, pos.z + bot.min.z); // left, lower
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.min.y, pos.z + bot.max.z);
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.max.y, pos.z + bot.min.z);
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.max.y, pos.z + bot.max.z);
+	vtx.emplace_back(pos.x + bot.max.x, pos.y + bot.min.y, pos.z + bot.min.z); // right
+	vtx.emplace_back(pos.x + bot.max.x, pos.y + top.max.y, pos.z + bot.min.z);
+	vtx.emplace_back(pos.x + bot.max.x, pos.y + bot.min.y, pos.z + bot.max.z);
+	vtx.emplace_back(pos.x + bot.max.x, pos.y + top.max.y, pos.z + bot.max.z);
+
+	norm.insert(norm.end(), 8, glm::vec3( 0.0f,  0.0f,  1.0f)); // front, x2
+	norm.insert(norm.end(), 8, glm::vec3( 0.0f,  0.0f, -1.0f)); // back, x2
+	norm.insert(norm.end(), 8, glm::vec3( 0.0f,  1.0f,  0.0f)); // top, x2
+	norm.insert(norm.end(), 4, glm::vec3( 0.0f, -1.0f,  0.0f)); // bottom
+	norm.insert(norm.end(), 8, glm::vec3(-1.0f,  0.0f,  0.0f)); // left, x2
+	norm.insert(norm.end(), 4, glm::vec3( 1.0f,  0.0f,  0.0f)); // right
+
+	index.emplace_back(idx +  0); // front, upper
+	index.emplace_back(idx +  1);
+	index.emplace_back(idx +  2);
+	index.emplace_back(idx +  2);
+	index.emplace_back(idx +  1);
+	index.emplace_back(idx +  3);
+	index.emplace_back(idx +  4); // front, lower
+	index.emplace_back(idx +  5);
+	index.emplace_back(idx +  6);
+	index.emplace_back(idx +  6);
+	index.emplace_back(idx +  5);
+	index.emplace_back(idx +  7);
+	index.emplace_back(idx +  8); // back, upper
+	index.emplace_back(idx +  9);
+	index.emplace_back(idx + 10);
+	index.emplace_back(idx + 10);
+	index.emplace_back(idx +  9);
+	index.emplace_back(idx + 11);
+	index.emplace_back(idx + 12); // back, lower
+	index.emplace_back(idx + 13);
+	index.emplace_back(idx + 14);
+	index.emplace_back(idx + 14);
+	index.emplace_back(idx + 13);
+	index.emplace_back(idx + 15);
+	index.emplace_back(idx + 16); // top, upper
+	index.emplace_back(idx + 17);
+	index.emplace_back(idx + 18);
+	index.emplace_back(idx + 18);
+	index.emplace_back(idx + 17);
+	index.emplace_back(idx + 19);
+	index.emplace_back(idx + 20); // top, lower
+	index.emplace_back(idx + 21);
+	index.emplace_back(idx + 22);
+	index.emplace_back(idx + 22);
+	index.emplace_back(idx + 21);
+	index.emplace_back(idx + 23);
+	index.emplace_back(idx + 24); // bottom
+	index.emplace_back(idx + 25);
+	index.emplace_back(idx + 26);
+	index.emplace_back(idx + 26);
+	index.emplace_back(idx + 25);
+	index.emplace_back(idx + 27);
+	index.emplace_back(idx + 28); // left, upper
+	index.emplace_back(idx + 29);
+	index.emplace_back(idx + 30);
+	index.emplace_back(idx + 30);
+	index.emplace_back(idx + 29);
+	index.emplace_back(idx + 31);
+	index.emplace_back(idx + 32); // left, lower
+	index.emplace_back(idx + 33);
+	index.emplace_back(idx + 34);
+	index.emplace_back(idx + 34);
+	index.emplace_back(idx + 33);
+	index.emplace_back(idx + 35);
+	index.emplace_back(idx + 36); // right
+	index.emplace_back(idx + 37);
+	index.emplace_back(idx + 38);
+	index.emplace_back(idx + 38);
+	index.emplace_back(idx + 37);
+	index.emplace_back(idx + 39);
 }
 
-void CuboidShape::Outline(std::vector<glm::vec3> &out, const glm::vec3 &pos) const {
-	out.reserve(24);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.min.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.min.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.max.x, pos.y + bb.max.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.max.y, pos.z + bb.max.z);
-	out.emplace_back(pos.x + bb.min.x, pos.y + bb.min.y, pos.z + bb.max.z);
+void StairShape::Outline(
+	std::vector<glm::vec3> &vtx,
+	std::vector<OutlineModel::Index> &index,
+	const glm::vec3 &pos,
+	OutlineModel::Index idx
+) const {
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.min.y, pos.z + bot.min.z); // bottom
+	vtx.emplace_back(pos.x + bot.max.x, pos.y + bot.min.y, pos.z + bot.min.z);
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.min.y, pos.z + bot.max.z);
+	vtx.emplace_back(pos.x + bot.max.x, pos.y + bot.min.y, pos.z + bot.max.z);
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.max.y, pos.z + bot.min.z); // middle
+	vtx.emplace_back(pos.x + top.min.x, pos.y + bot.max.y, pos.z + bot.min.z);
+	vtx.emplace_back(pos.x + bot.min.x, pos.y + bot.max.y, pos.z + top.max.z);
+	vtx.emplace_back(pos.x + top.min.x, pos.y + bot.max.y, pos.z + top.max.z);
+	vtx.emplace_back(pos.x + top.min.x, pos.y + top.max.y, pos.z + top.min.z); // top
+	vtx.emplace_back(pos.x + top.max.x, pos.y + top.max.y, pos.z + top.min.z);
+	vtx.emplace_back(pos.x + top.min.x, pos.y + top.max.y, pos.z + top.max.z);
+	vtx.emplace_back(pos.x + top.max.x, pos.y + top.max.y, pos.z + top.max.z);
+
+	index.emplace_back(idx +  0); // bottom
+	index.emplace_back(idx +  1);
+	index.emplace_back(idx +  1);
+	index.emplace_back(idx +  3);
+	index.emplace_back(idx +  3);
+	index.emplace_back(idx +  2);
+	index.emplace_back(idx +  2);
+	index.emplace_back(idx +  0);
+	index.emplace_back(idx +  4); // middle
+	index.emplace_back(idx +  5);
+	index.emplace_back(idx +  5);
+	index.emplace_back(idx +  7);
+	index.emplace_back(idx +  7);
+	index.emplace_back(idx +  6);
+	index.emplace_back(idx +  6);
+	index.emplace_back(idx +  4);
+	index.emplace_back(idx +  8); // top
+	index.emplace_back(idx +  9);
+	index.emplace_back(idx +  9);
+	index.emplace_back(idx + 11);
+	index.emplace_back(idx + 11);
+	index.emplace_back(idx + 10);
+	index.emplace_back(idx + 10);
+	index.emplace_back(idx +  8);
+	index.emplace_back(idx +  0); // verticals
+	index.emplace_back(idx +  4);
+	index.emplace_back(idx +  2);
+	index.emplace_back(idx +  6);
+	index.emplace_back(idx +  5);
+	index.emplace_back(idx +  8);
+	index.emplace_back(idx +  7);
+	index.emplace_back(idx + 10);
+	index.emplace_back(idx +  1);
+	index.emplace_back(idx +  9);
+	index.emplace_back(idx +  3);
+	index.emplace_back(idx + 11);
 }
 
-bool CuboidShape::Intersects(const Ray &ray, const glm::mat4 &M, float &dist, glm::vec3 &normal) const {
-	return Intersection(ray, bb, M, &dist, &normal);
+bool StairShape::Intersects(
+	const Ray &ray,
+	const glm::mat4 &M,
+	float &dist,
+	glm::vec3 &norm
+) const {
+	float top_dist, bot_dist;
+	glm::vec3 top_norm, bot_norm;
+	bool top_hit = Intersection(ray, top, M, &top_dist, &top_norm);
+	bool bot_hit = Intersection(ray, bot, M, &bot_dist, &bot_norm);
+
+	if (top_hit) {
+		if (bot_hit) {
+			if (top_dist < bot_dist) {
+				dist = top_dist;
+				norm = top_norm;
+				return true;
+			} else {
+				dist = bot_dist;
+				norm = bot_norm;
+				return true;
+			}
+		} else {
+			dist = top_dist;
+			norm = top_norm;
+			return true;
+		}
+	} else if (bot_hit) {
+		dist = bot_dist;
+		norm = bot_norm;
+		return true;
+	} else {
+		return false;
+	}
 }
 
+
 }