X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=antikythera;a=blobdiff_plain;f=src%2Fgear.cc;h=697610d9440cdb3d157f36e34e62992fd1236dbb;hp=10e8bc89b1535a9ed0fa1f695ed798a1b015b86a;hb=080d7a779d43f549fc16c44e709cbf5989180fdf;hpb=014fccdee30291407985658e8cefd9be7dc9e9fa

diff --git a/src/gear.cc b/src/gear.cc
index 10e8bc8..697610d 100644
--- a/src/gear.cc
+++ b/src/gear.cc
@@ -16,6 +16,8 @@ Gear::Gear()
 	init_angle = 0;
 	xform_valid = false;
 
+	supergear = 0;
+
 	mesh = 0;
 }
 
@@ -24,6 +26,52 @@ Gear::~Gear()
 	delete mesh;
 }
 
+void Gear::attach(Gear *g)
+{
+	if(g->supergear) {
+		if(g->supergear == this) {
+			return;
+		}
+		g->supergear->detach(g);
+	}
+	g->supergear = this;
+	subgears.push_back(g);
+
+	// make co-axial
+	g->axis = axis;
+	g->pos.x = pos.x;
+	g->pos.y = pos.y;
+}
+
+bool Gear::detach(Gear *g)
+{
+	int nsubgears = (int)subgears.size();
+	for(int i=0; i<nsubgears; i++) {
+		if(subgears[i] == g) {
+			subgears.erase(subgears.begin() + i);
+			g->supergear = 0;
+			return true;
+		}
+	}
+	return false;
+}
+
+Gear *Gear::get_super() const
+{
+	return supergear;
+}
+
+void Gear::set_angular_offset(float offs)
+{
+	init_angle = offs;
+	xform_valid = false;
+}
+
+float Gear::get_angular_offset() const
+{
+	return init_angle;
+}
+
 void Gear::set_teeth(int nt, float tooth_pitch)
 {
 	float circ = tooth_pitch * nt;
@@ -37,10 +85,22 @@ void Gear::set_axis(const Vec3 &axis)
 	xform_valid = false;
 }
 
+const Vec3 &Gear::get_axis() const
+{
+	return axis;
+}
+
 void Gear::set_position(const Vec3 &pos)
 {
-	this->pos = pos;
-	xform_valid = false;
+	if(!supergear) {
+		this->pos = pos;
+		xform_valid = false;
+	} else {
+		if(fabs(this->pos.z - pos.z) > 1e-5) {
+			this->pos.z = pos.z;
+			xform_valid = false;
+		}
+	}
 }
 
 const Vec3 &Gear::get_position() const
@@ -50,13 +110,8 @@ const Vec3 &Gear::get_position() const
 
 Vec3 Gear::get_global_position() const
 {
-	return pos;	// TODO
-}
-
-Vec3 Gear::get_planar_position() const
-{
-	Mat4 inv_xform = transpose(get_dir_matrix());
-	return inv_xform * pos;
+	const Mat4 &m = get_matrix();
+	return m * Vec3(0, 0, 0);
 }
 
 void Gear::set_angle(float angle)
@@ -72,8 +127,7 @@ float Gear::get_angle() const
 
 float Gear::get_vis_rotation() const
 {
-	float fix_crooked_teeth = get_angular_pitch() * 3.0 / 8.0;
-	return fmod(init_angle + fix_crooked_teeth + angle, M_PI * 2.0);
+	return fmod(init_angle + angle, M_PI * 2.0);
 }
 
 const Mat4 &Gear::get_matrix() const
@@ -208,8 +262,11 @@ bool Gear::gen_mesh()
 	mesh->explode();
 	mesh->calc_face_normals();
 
+	float fix_tooth_up = get_angular_pitch() * 3.0 / 8.0;
+
 	Mat4 rot;
 	rot.rotation_x(M_PI / 2.0);
+	rot.rotate_z(fix_tooth_up);
 	mesh->apply_xform(rot, rot);
 
 	mesh->set_vis_vecsize(6.0);
@@ -230,4 +287,7 @@ void Gear::calc_matrix() const
 	xform = dir_xform;
 	xform.rotate_z(get_vis_rotation());
 	xform.translate(pos);
+
+	axel_xform = dir_xform;
+	axel_xform.translate(pos);
 }