X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=antikythera;a=blobdiff_plain;f=src%2Fmain.cc;h=6a296b91f17f720a660c6b7cd411a6d8b2762c5e;hp=c4696f6c6eabd1f25445e2ae972ba4915d083a70;hb=caee16904b985501cff521557c9ab487d2d96a91;hpb=ae60a8cb1a30e204e7f60969fe6245e510cca0ff

diff --git a/src/main.cc b/src/main.cc
index c4696f6..6a296b9 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -7,36 +7,65 @@
 #else
 #include <GL/glut.h>
 #endif
-#include "gear.h"
-
-bool init();
-void cleanup();
-void display();
-void draw_gears();
-void reshape(int x, int y);
-void keyb(unsigned char key, int x, int y);
-void mouse(int bn, int st, int x, int y);
-void motion(int x, int y);
-
-static float cam_dist = 2;
-static float cam_theta, cam_phi;
+#include "app.h"
+#include "sdr.h"
+#include "shadow.h"
+#include "texture.h"
+#include "machine.h"
+#include "meshgen.h"
+#include "mparser.h"
+
+static bool init();
+static void cleanup();
+static void display();
+static void idle();
+static void draw_scene();
+static void draw_gears();
+static void reshape(int x, int y);
+static void keyb(unsigned char key, int x, int y);
+static void mouse(int bn, int st, int x, int y);
+static void motion(int x, int y);
+static void passive_motion(int x, int y);
+static Gear *pick_gear(int x, int y);
+
+static int win_width, win_height;
+
+static float cam_dist = 0.25;
+static float cam_theta, cam_phi = 20;
 static int prev_mx, prev_my;
 static bool bnstate[8];
 
-static Gear *test_gear;
+static Mat4 view_matrix;
+
+static unsigned int start_time, prev_msec;
+static Machine *machine;
+static Gear *hover_gear, *sel_gear;
+static HitPoint pick_hit;
+static Vec3 sel_hit_pos;
+
+static unsigned int sdr_shadow_notex;
+static int dbg_show_shadowmap;
+
+static TextureSet texman;
+static Texture *envmap;
+static Mesh *skydome;
+static unsigned int sdr_skydome;
+
 
 int main(int argc, char **argv)
 {
-	glutInit(&argc, argv);
 	glutInitWindowSize(1024, 768);
-	glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE);
+	glutInit(&argc, argv);
+	glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_MULTISAMPLE);
 	glutCreateWindow("Antikythera");
 
 	glutDisplayFunc(display);
+	glutIdleFunc(idle);
 	glutReshapeFunc(reshape);
 	glutKeyboardFunc(keyb);
 	glutMouseFunc(mouse);
 	glutMotionFunc(motion);
+	glutPassiveMotionFunc(passive_motion);
 
 	if(!init()) {
 		return 1;
@@ -47,81 +76,331 @@ int main(int argc, char **argv)
 	return 0;
 }
 
-bool init()
+static bool init()
 {
 	glewInit();
 
+	glEnable(GL_MULTISAMPLE);
 	glEnable(GL_DEPTH_TEST);
 	glEnable(GL_CULL_FACE);
 	glEnable(GL_LIGHTING);
-	glEnable(GL_LIGHT0);
 	glEnable(GL_NORMALIZE);
 
 	Mesh::use_custom_sdr_attr = false;
 
-	test_gear = new Gear;
-	test_gear->gen_mesh();
+	machine = new Machine;
+	if(!parse_machine(machine, "data/test.machine")) {
+		fprintf(stderr, "failed to parse machine\n");
+		return false;
+	}
+
+	/*
+	const float pitch = 10.0f;
+
+	Gear *gear1 = new Gear;
+	gear1->pos = Vec3(-50, 0, 0);
+	gear1->set_teeth(16, pitch);
+	gear1->gen_mesh();
+	gear1->color = Vec3(0.35, 0.6, 0.8);
+	machine->add_gear(gear1);
+
+	Gear *gear2 = new Gear;
+	gear2->set_teeth(32, pitch);
+	gear2->pos = gear1->pos + Vec3(gear1->radius + gear2->radius - gear1->teeth_length * 0.75, 0, 0);
+	gear2->thickness = 5;
+	gear2->gen_mesh();
+	machine->add_gear(gear2);
+
+	Gear *gear3 = new Gear;
+	gear3->set_teeth(8, pitch);
+	gear3->pos = gear2->pos + Vec3(0, gear2->radius + gear3->radius - gear2->teeth_length * 0.75, 0);
+	gear3->gen_mesh();
+	machine->add_gear(gear3);
+	gear3->color = Vec3(0.5, 0.8, 0.6);
 
+	Gear *subgear = new Gear;
+	subgear->set_teeth(10, pitch);
+	subgear->pos = Vec3(0, 0, (gear2->thickness + subgear->thickness) / 2 + 1);
+	subgear->gen_mesh();
+	gear2->attach(subgear);
+	machine->add_gear(subgear);
+	subgear->color = Vec3(0.8, 0.7, 0.5);
+	*/
+
+	//machine->add_motor(0, 1.0);
+
+	// shadows
+	init_shadow(2048);
+
+	if(!(sdr_shadow_notex = create_program_load("sdr/shadow.v.glsl", "sdr/shadow-notex.p.glsl"))) {
+		return false;
+	}
+	set_uniform_int(sdr_shadow_notex, "shadowmap", 1);
+	set_uniform_int(sdr_shadow_notex, "envmap", 2);
+
+	float ambient[] = {0.1, 0.1, 0.1, 0.0};
+	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
+
+	// env
+	envmap = texman.get_texture("data/stpeters_cross.jpg", TEX_CUBE);
+
+	skydome = new Mesh;
+	gen_sphere(skydome, 1.0, 16, 8);
+	skydome->flip_faces();
+
+	if(!(sdr_skydome = create_program_load("sdr/skydome.v.glsl", "sdr/skydome.p.glsl"))) {
+		return false;
+	}
+	glUseProgram(0);
+
+	start_time = glutGet(GLUT_ELAPSED_TIME);
 	return true;
 }
 
-void cleanup()
+static void cleanup()
 {
-	delete test_gear;
+	texman.clear();
+	delete machine;
 }
 
-void display()
+static void update(float dt)
 {
+	texman.update();
+
+	machine->update(dt);
+
+	if(sel_gear) {
+	}
+
+	hover_gear = pick_gear(prev_mx, prev_my);
+}
+
+static void set_light(int idx, const Vec3 &pos, const Vec3 &color)
+{
+	unsigned int lt = GL_LIGHT0 + idx;
+	float posv[] = { pos.x, pos.y, pos.z, 1 };
+	float colv[] = { color.x, color.y, color.z, 1 };
+
+	glEnable(lt);
+	glLightfv(lt, GL_POSITION, posv);
+	glLightfv(lt, GL_DIFFUSE, colv);
+	glLightfv(lt, GL_SPECULAR, colv);
+}
+
+static void display()
+{
+	unsigned int msec = glutGet(GLUT_ELAPSED_TIME) - start_time;
+	float dt = (float)(msec - prev_msec) / 1000.0f;
+	prev_msec = msec;
+
 	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
+	view_matrix = Mat4::identity;
+	view_matrix.pre_translate(0, 0, -cam_dist);
+	view_matrix.pre_rotate(deg_to_rad(cam_phi), 1, 0, 0);
+	view_matrix.pre_rotate(deg_to_rad(cam_theta), 0, 1, 0);
+
+	glMatrixMode(GL_MODELVIEW);
+	glLoadMatrixf(view_matrix[0]);
+
+	static const Vec3 lpos[] = { Vec3(-50, 75, 100), Vec3(100, 0, 30), Vec3(-10, -10, 60) };
+	set_light(0, lpos[0], Vec3(1.0, 0.8, 0.7) * 0.8);
+	set_light(1, lpos[1], Vec3(0.6, 0.7, 1.0) * 0.6);
+	set_light(2, lpos[2], Vec3(0.8, 1.0, 0.8) * 0.3);
+
+	update(dt);
+
+	// shadowmap pass
+	begin_shadow_pass(lpos[0], Vec3(0, 0, 0), 0.2, 100, 150);
+	draw_scene();
+	end_shadow_pass();
+
+	// regular pass
+	const Mat4 &shadow_matrix = get_shadow_matrix();
+	Mat4 env_matrix = transpose(view_matrix.upper3x3());
+	set_uniform_matrix4(sdr_shadow_notex, "envmap_matrix", env_matrix[0]);
+
+	glActiveTexture(GL_TEXTURE1);
+	glBindTexture(GL_TEXTURE_2D, get_shadow_tex());
+	glMatrixMode(GL_TEXTURE);
+	glLoadMatrixf(shadow_matrix[0]);
+
+	glActiveTexture(GL_TEXTURE2);
+	glBindTexture(GL_TEXTURE_CUBE_MAP, envmap->get_id());
+
+	glActiveTexture(GL_TEXTURE0);
 	glMatrixMode(GL_MODELVIEW);
+
+	draw_scene();
+
+	glMatrixMode(GL_TEXTURE);
 	glLoadIdentity();
-	glTranslatef(0, 0, -cam_dist);
-	glRotatef(cam_phi, 1, 0, 0);
-	glRotatef(cam_theta, 0, 1, 0);
+	glMatrixMode(GL_MODELVIEW);
+
+
+	if(dbg_show_shadowmap) {
+		glMatrixMode(GL_PROJECTION);
+		glPushMatrix();
+		glLoadIdentity();
+		glMatrixMode(GL_MODELVIEW);
+		glPushMatrix();
+		glLoadIdentity();
+		glMatrixMode(GL_TEXTURE);
+		glLoadIdentity();
+
+		glPushAttrib(GL_ENABLE_BIT);
+		glUseProgram(0);
+		glBindTexture(GL_TEXTURE_2D, get_shadow_tex());
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_NONE);
+		glEnable(GL_TEXTURE_2D);
+		glDisable(GL_DEPTH_TEST);
+		glDisable(GL_LIGHTING);
+		glDisable(GL_BLEND);
+
+		glBegin(GL_QUADS);
+		glColor4f(1, 1, 1, 1);
+		glTexCoord2f(0, 0); glVertex2f(-0.95, -0.95);
+		glTexCoord2f(1, 0); glVertex2f(-0.5, -0.95);
+		glTexCoord2f(1, 1); glVertex2f(-0.5, -0.5);
+		glTexCoord2f(0, 1); glVertex2f(-0.95, -0.5);
+		glEnd();
+
+		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_R_TO_TEXTURE);
+		glBindTexture(GL_TEXTURE_2D, 0);
+
+		glPopAttrib();
+
+		glMatrixMode(GL_PROJECTION);
+		glPopMatrix();
+		glMatrixMode(GL_MODELVIEW);
+		glPopMatrix();
+	}
 
-	draw_gears();
 
 	glutSwapBuffers();
 	assert(glGetError() == GL_NO_ERROR);
 }
 
-void draw_gears()
+static void idle()
+{
+	glutPostRedisplay();
+}
+
+static void draw_scene()
 {
-	/* world scale is in meters, gears are in millimeters, sclae by 1/1000 */
+	// draw skydome
+	glDepthMask(0);
+
+	Mat4 rot_view = view_matrix.upper3x3();
+	glMatrixMode(GL_MODELVIEW);
+	glPushMatrix();
+	glLoadMatrixf(rot_view[0]);
+
+	bind_texture(envmap, 0);
+
+	glUseProgram(sdr_skydome);
+	skydome->draw();
+	glUseProgram(0);
+
+	bind_texture(0, 0);
+
+	glPopMatrix();
+	glDepthMask(1);
+
+	// draw mechanism
+	draw_gears();
+}
+
+static void draw_gears()
+{
+	/* world scale is in meters, gears are in millimeters, scale by 1/1000 */
 	glPushMatrix();
 	glScalef(0.001, 0.001, 0.001);
 
-	test_gear->draw();
+	if(!shadow_pass && (sel_gear || hover_gear)) {
+		glPushAttrib(GL_ENABLE_BIT | GL_LINE_BIT | GL_POLYGON_BIT);
+
+		glDisable(GL_LIGHTING);
+		glFrontFace(GL_CW);
+		glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+		glLineWidth(3.0);
+
+		if(sel_gear) {
+			glColor3f(0.2, 1.0, 0.3);
+			sel_gear->draw();
+		} else {
+			glColor3f(1.0, 0.75, 0.2);
+			hover_gear->draw();
+		}
+
+		glPopAttrib();
+	}
+
+	glUseProgram(shadow_pass ? 0 : sdr_shadow_notex);
+	machine->draw();
+	glUseProgram(0);
 
 	glPopMatrix();
 }
 
-void reshape(int x, int y)
+static void reshape(int x, int y)
 {
+	win_width = x;
+	win_height = y;
+
 	glViewport(0, 0, x, y);
 
 	glMatrixMode(GL_PROJECTION);
 	glLoadIdentity();
-	gluPerspective(50.0, (float)x / (float)y, 0.05, 100.0);
+	gluPerspective(50.0, (float)x / (float)y, 0.01, 50.0);
 }
 
-void keyb(unsigned char key, int x, int y)
+static void keyb(unsigned char key, int x, int y)
 {
 	switch(key) {
 	case 27:
 		exit(0);
+
+	case 'w':
+		opt_gear_wireframe = !opt_gear_wireframe;
+		glutPostRedisplay();
+		break;
+
+	case 's':
+		dbg_show_shadowmap = !dbg_show_shadowmap;
+		glutPostRedisplay();
+		break;
 	}
 }
 
-void mouse(int bn, int st, int x, int y)
+static void mouse(int bn, int st, int x, int y)
 {
+	int bidx = bn - GLUT_LEFT_BUTTON;
+	bool down = st == GLUT_DOWN;
+
 	prev_mx = x;
 	prev_my = y;
-	bnstate[bn - GLUT_LEFT_BUTTON] = st == GLUT_DOWN;
+	bnstate[bidx] = down;
+
+	if(bidx == 0) {
+		if(down) {
+			sel_gear = pick_gear(x, y);
+			sel_hit_pos = pick_hit.pos;
+		} else {
+			sel_gear = 0;
+		}
+	}
+
+	if(bidx == 3 || bidx == 4) {	/* wheel */
+		if(hover_gear) {
+			float dz = bidx == 4 ? 1 : -1;
+			hover_gear->set_position(hover_gear->get_position() + hover_gear->get_axis() * dz);
+			machine->invalidate_meshing();
+		}
+	}
 }
 
-void motion(int x, int y)
+static void motion(int x, int y)
 {
 	int dx = x - prev_mx;
 	int dy = y - prev_my;
@@ -130,17 +409,55 @@ void motion(int x, int y)
 
 	if(!dx && !dy) return;
 
-	if(bnstate[0]) {
-		cam_theta += dx * 0.5;
-		cam_phi += dy * 0.5;
+	if(sel_gear) {
+		float speed = 0.5;
+		Vec3 offs = Vec3(dx * speed, -dy * speed, 0.0);
+		offs = sel_gear->get_dir_matrix() * offs;
 
-		if(cam_phi < -90) cam_phi = -90;
-		if(cam_phi > 90) cam_phi = 90;
-		glutPostRedisplay();
-	}
-	if(bnstate[2]) {
-		cam_dist += dy * 0.05;
-		if(cam_dist < 0.0) cam_dist = 0.0;
-		glutPostRedisplay();
+		sel_gear->set_position(sel_gear->get_position() + offs);
+		machine->invalidate_meshing();
+
+	} else {
+		if(bnstate[0]) {
+			cam_theta += dx * 0.5;
+			cam_phi += dy * 0.5;
+
+			if(cam_phi < -90) cam_phi = -90;
+			if(cam_phi > 90) cam_phi = 90;
+			glutPostRedisplay();
+		}
+		if(bnstate[2]) {
+			cam_dist += dy * 0.01;
+			if(cam_dist < 0.0) cam_dist = 0.0;
+			glutPostRedisplay();
+		}
 	}
 }
+
+static void passive_motion(int x, int y)
+{
+	prev_mx = x;
+	prev_my = y;
+}
+
+static Gear *pick_gear(int x, int y)
+{
+	double pt[3];
+	double viewmat[16], projmat[16];
+	int vp[4];
+	Ray ray;
+
+	y = win_height - y;
+
+	glGetDoublev(GL_MODELVIEW_MATRIX, viewmat);
+	glGetDoublev(GL_PROJECTION_MATRIX, projmat);
+	glGetIntegerv(GL_VIEWPORT, vp);
+
+	gluUnProject(x, y, 0, viewmat, projmat, vp, pt, pt + 1, pt + 2);
+	ray.origin = Vec3(pt[0], pt[1], pt[2]) * 1000.0f;
+
+	gluUnProject(x, y, 1, viewmat, projmat, vp, pt, pt + 1, pt + 2);
+	ray.dir = Vec3(pt[0], pt[1], pt[2]) * 1000.0f - ray.origin;
+
+	return machine->intersect_gear(ray, &pick_hit);
+}