X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=antikythera;a=blobdiff_plain;f=src%2Fgear.cc;h=c916e765c389519e8405ce3059f220ef3ed0406e;hp=6450c65d09238abdb148466d10e7c8ad45cb753e;hb=b29d7193d03833109cfdda3ab576fe183efd8acf;hpb=ae60a8cb1a30e204e7f60969fe6245e510cca0ff

diff --git a/src/gear.cc b/src/gear.cc
index 6450c65..c916e76 100644
--- a/src/gear.cc
+++ b/src/gear.cc
@@ -1,6 +1,7 @@
 #include <GL/glew.h>
 #include "gear.h"
 #include "meshgen.h"
+#include "app.h"
 
 Gear::Gear()
 	: axis(0, 0, 1)
@@ -12,6 +13,8 @@ Gear::Gear()
 	teeth_length = 5;
 	thickness = 5;
 	bevel = 1.5;
+	init_angle = 0;
+	xform_valid = false;
 
 	mesh = 0;
 }
@@ -21,6 +24,97 @@ Gear::~Gear()
 	delete mesh;
 }
 
+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;
+	radius = circ / (2.0 * M_PI);
+	nteeth = nt;
+}
+
+void Gear::set_axis(const Vec3 &axis)
+{
+	this->axis = normalize(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;
+}
+
+const Vec3 &Gear::get_position() const
+{
+	return pos;
+}
+
+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;
+}
+
+void Gear::set_angle(float angle)
+{
+	this->angle = angle;
+	xform_valid = false;
+}
+
+float Gear::get_angle() const
+{
+	return angle;
+}
+
+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);
+}
+
+const Mat4 &Gear::get_matrix() const
+{
+	if(!xform_valid) {
+		calc_matrix();
+		xform_valid = true;
+	}
+	return xform;
+}
+
+const Mat4 &Gear::get_dir_matrix() const
+{
+	if(!xform_valid) {
+		calc_matrix();
+		xform_valid = true;
+	}
+	return dir_xform;
+}
+
+float Gear::get_angular_pitch() const
+{
+	return 2.0 * M_PI / (float)nteeth;
+}
+
 void Gear::draw() const
 {
 	if(!mesh) {
@@ -28,22 +122,62 @@ void Gear::draw() const
 			abort();
 		}
 	}
-	calc_matrix();
+	if(!xform_valid) {
+		calc_matrix();
+	}
+
+	glPushAttrib(GL_ENABLE_BIT | GL_LINE_BIT);
 
 	glPushMatrix();
 	glMultMatrixf(xform[0]);
 
+	if(opt_gear_wireframe) {
+		glPolygonOffset(1, 1);
+		glEnable(GL_POLYGON_OFFSET_FILL);
+	}
+
 	mesh->draw();
 
-	/*
-	glPushAttrib(GL_ENABLE_BIT);
 	glDisable(GL_LIGHTING);
-	glColor3f(0, 1, 0);
-	mesh->draw_normals();
+
+	if(opt_gear_wireframe) {
+		glColor3f(0.2, 0.4, 1.0);
+		mesh->draw_wire();
+	}
+
+	glLineWidth(2.0);
+	glBegin(GL_LINES);
+	glColor3f(0, 0, 1);
+	glVertex3f(0, 0, -10);
+	glVertex3f(0, 0, 10);
+	glEnd();
+
+	glPopMatrix();
 	glPopAttrib();
-	*/
+}
+
+void Gear::draw_wire(float wire_width) const
+{
+	if(!mesh) {
+		if(!((Gear*)this)->gen_mesh()) {
+			abort();
+		}
+	}
+	if(!xform_valid) {
+		calc_matrix();
+	}
+
+	glPushAttrib(GL_ENABLE_BIT | GL_LINE_BIT);
+	glLineWidth(wire_width);
+	glDisable(GL_LIGHTING);
+
+	glPushMatrix();
+	glMultMatrixf(xform[0]);
+
+	mesh->draw_wire();
 
 	glPopMatrix();
+	glPopAttrib();
 }
 
 static Vec2 rev_pos(float u, float v, void *cls)
@@ -107,6 +241,9 @@ void Gear::calc_matrix() const
 	Vec3 right = normalize(cross(up, axis));
 	up = cross(axis, right);
 
-	xform = Mat4(right, up, axis);
+	dir_xform = Mat4(right, up, axis);
+
+	xform = dir_xform;
+	xform.rotate_z(get_vis_rotation());
 	xform.translate(pos);
 }