splines.cpp

quakeIII源码这个不用我多说吧

			}
			token = Com_Parse(text);

		} while (1);

		if ( !strcmp (token, "}") ) {
			break;
		}

	} while (1);
 
	Com_UngetToken();
	Com_MatchToken( text, "}" );
}

void idCameraEvent::write(fileHandle_t file, const char *name) {
	idStr s = va("\t%s {\n", name);
	FS_Write(s.c_str(), s.length(), file);
	s = va("\t\ttype %d\n", static_cast<int>(type));
	FS_Write(s.c_str(), s.length(), file);
	s = va("\t\tparam %s\n", paramStr.c_str());
	FS_Write(s.c_str(), s.length(), file);
	s = va("\t\ttime %d\n", time);
	FS_Write(s.c_str(), s.length(), file);
	s = "\t}\n";
	FS_Write(s.c_str(), s.length(), file);
}


const char *idCameraPosition::positionStr[] = {
	"Fixed",
	"Interpolated",
	"Spline",
};



const idVec3_t *idInterpolatedPosition::getPosition(long t) { 
	static idVec3_t interpolatedPos;

	float velocity = getVelocity(t);
	float timePassed = t - lastTime;
	lastTime = t;

	// convert to seconds	
	timePassed /= 1000;

	float distToTravel = timePassed *= velocity;

	idVec3_t temp = startPos;
	temp -= endPos;
	float distance = temp.Length();

	distSoFar += distToTravel;
	float percent = (float)(distSoFar) / distance;

	if (percent > 1.0) {
		percent = 1.0;
	} else if (percent < 0.0) {
		percent = 0.0;
	}

	// the following line does a straigt calc on percentage of time
	// float percent = (float)(startTime + time - t) / time;

	idVec3_t v1 = startPos;
	idVec3_t v2 = endPos;
	v1 *= (1.0 - percent);
	v2 *= percent;
	v1 += v2;
	interpolatedPos = v1;
	return &interpolatedPos;
}


void idCameraFOV::parse(const char *(*text)  ) {
	const char *token;
	Com_MatchToken( text, "{" );
	do {
		token = Com_Parse( text );
	
		if ( !token[0] ) {
			break;
		}
		if ( !strcmp (token, "}") ) {
			break;
		}

		// here we may have to jump over brush epairs ( only used in editor )
		do {
			// if token is not a brace, it is a key for a key/value pair
			if ( !token[0] || !strcmp (token, "(") || !strcmp(token, "}")) {
				break;
			}

			Com_UngetToken();
			idStr key = Com_ParseOnLine(text);
			const char *token = Com_Parse(text);
			if (Q_stricmp(key.c_str(), "fov") == 0) {
				fov = atof(token);
			} else if (Q_stricmp(key.c_str(), "startFOV") == 0) {
				startFOV = atof(token);
			} else if (Q_stricmp(key.c_str(), "endFOV") == 0) {
				endFOV = atof(token);
			} else if (Q_stricmp(key.c_str(), "time") == 0) {
				time = atoi(token);
			}
			token = Com_Parse(text);

		} while (1);

		if ( !strcmp (token, "}") ) {
			break;
		}

	} while (1);
 
	Com_UngetToken();
	Com_MatchToken( text, "}" );
}

bool idCameraPosition::parseToken(const char *key, const char *(*text)) {
	const char *token = Com_Parse(text);
	if (Q_stricmp(key, "time") == 0) {
		time = atol(token);
		return true;
	} else if (Q_stricmp(key, "type") == 0) {
		type = static_cast<idCameraPosition::positionType>(atoi(token));
		return true;
	} else if (Q_stricmp(key, "velocity") == 0) {
		long t = atol(token);
		token = Com_Parse(text);
		long d = atol(token);
		token = Com_Parse(text);
		float s = atof(token);
		addVelocity(t, d, s);
		return true;
	} else if (Q_stricmp(key, "baseVelocity") == 0) {
		baseVelocity = atof(token);
		return true;
	} else if (Q_stricmp(key, "name") == 0) {
		name = token;
		return true;
	} else if (Q_stricmp(key, "time") == 0) {
		time = atoi(token);
		return true;
	}
	Com_UngetToken();
	return false;
}



void idFixedPosition::parse(const char *(*text)  ) {
	const char *token;
	Com_MatchToken( text, "{" );
	do {
		token = Com_Parse( text );
	
		if ( !token[0] ) {
			break;
		}
		if ( !strcmp (token, "}") ) {
			break;
		}

		// here we may have to jump over brush epairs ( only used in editor )
		do {
			// if token is not a brace, it is a key for a key/value pair
			if ( !token[0] || !strcmp (token, "(") || !strcmp(token, "}")) {
				break;
			}

			Com_UngetToken();
			idStr key = Com_ParseOnLine(text);
			
			const char *token = Com_Parse(text);
			if (Q_stricmp(key.c_str(), "pos") == 0) {
				Com_UngetToken();
				Com_Parse1DMatrix( text, 3, pos );
			} else {
				Com_UngetToken();
				idCameraPosition::parseToken(key.c_str(), text);	
			}
			token = Com_Parse(text);

		} while (1);

		if ( !strcmp (token, "}") ) {
			break;
		}

	} while (1);
 
	Com_UngetToken();
	Com_MatchToken( text, "}" );
}

void idInterpolatedPosition::parse(const char *(*text)  ) {
	const char *token;
	Com_MatchToken( text, "{" );
	do {
		token = Com_Parse( text );
	
		if ( !token[0] ) {
			break;
		}
		if ( !strcmp (token, "}") ) {
			break;
		}

		// here we may have to jump over brush epairs ( only used in editor )
		do {
			// if token is not a brace, it is a key for a key/value pair
			if ( !token[0] || !strcmp (token, "(") || !strcmp(token, "}")) {
				break;
			}

			Com_UngetToken();
			idStr key = Com_ParseOnLine(text);
			
			const char *token = Com_Parse(text);
			if (Q_stricmp(key.c_str(), "startPos") == 0) {
				Com_UngetToken();
				Com_Parse1DMatrix( text, 3, startPos );
			} else if (Q_stricmp(key.c_str(), "endPos") == 0) {
				Com_UngetToken();
				Com_Parse1DMatrix( text, 3, endPos );
			} else {
				Com_UngetToken();
				idCameraPosition::parseToken(key.c_str(), text);	
			}
			token = Com_Parse(text);

		} while (1);

		if ( !strcmp (token, "}") ) {
			break;
		}

	} while (1);
 
	Com_UngetToken();
	Com_MatchToken( text, "}" );
}


void idSplinePosition::parse(const char *(*text)  ) {
	const char *token;
	Com_MatchToken( text, "{" );
	do {
		token = Com_Parse( text );
	
		if ( !token[0] ) {
			break;
		}
		if ( !strcmp (token, "}") ) {
			break;
		}

		// here we may have to jump over brush epairs ( only used in editor )
		do {
			// if token is not a brace, it is a key for a key/value pair
			if ( !token[0] || !strcmp (token, "(") || !strcmp(token, "}")) {
				break;
			}

			Com_UngetToken();
			idStr key = Com_ParseOnLine(text);
			
			const char *token = Com_Parse(text);
			if (Q_stricmp(key.c_str(), "target") == 0) {
				target.parse(text);
			} else {
				Com_UngetToken();
				idCameraPosition::parseToken(key.c_str(), text);	
			}
			token = Com_Parse(text);

		} while (1);

		if ( !strcmp (token, "}") ) {
			break;
		}

	} while (1);
 
	Com_UngetToken();
	Com_MatchToken( text, "}" );
}



void idCameraFOV::write(fileHandle_t file, const char *p) {
	idStr s = va("\t%s {\n", p);
	FS_Write(s.c_str(), s.length(), file);
	
	s = va("\t\tfov %f\n", fov);
	FS_Write(s.c_str(), s.length(), file);

	s = va("\t\tstartFOV %f\n", startFOV);
	FS_Write(s.c_str(), s.length(), file);

	s = va("\t\tendFOV %f\n", endFOV);
	FS_Write(s.c_str(), s.length(), file);

	s = va("\t\ttime %i\n", time);
	FS_Write(s.c_str(), s.length(), file);

	s = "\t}\n";
	FS_Write(s.c_str(), s.length(), file);
}


void idCameraPosition::write(fileHandle_t file, const char *p) {
	
	idStr s = va("\t\ttime %i\n", time);
	FS_Write(s.c_str(), s.length(), file);

	s = va("\t\ttype %i\n", static_cast<int>(type));
	FS_Write(s.c_str(), s.length(), file);

	s = va("\t\tname %s\n", name.c_str());
	FS_Write(s.c_str(), s.length(), file);

	s = va("\t\tbaseVelocity %f\n", baseVelocity);
	FS_Write(s.c_str(), s.length(), file);

	for (int i = 0; i < velocities.Num(); i++) {
		s = va("\t\tvelocity %i %i %f\n", velocities[i]->startTime, velocities[i]->time, velocities[i]->speed);
		FS_Write(s.c_str(), s.length(), file);
	}

}

void idFixedPosition::write(fileHandle_t file, const char *p) {
	idStr s = va("\t%s {\n", p);
	FS_Write(s.c_str(), s.length(), file);
	idCameraPosition::write(file, p);
	s = va("\t\tpos ( %f %f %f )\n", pos.x, pos.y, pos.z);
	FS_Write(s.c_str(), s.length(), file);
	s = "\t}\n";
	FS_Write(s.c_str(), s.length(), file);
}

void idInterpolatedPosition::write(fileHandle_t file, const char *p) {
	idStr s = va("\t%s {\n", p);
	FS_Write(s.c_str(), s.length(), file);
	idCameraPosition::write(file, p);
	s = va("\t\tstartPos ( %f %f %f )\n", startPos.x, startPos.y, startPos.z);
	FS_Write(s.c_str(), s.length(), file);
	s = va("\t\tendPos ( %f %f %f )\n", endPos.x, endPos.y, endPos.z);
	FS_Write(s.c_str(), s.length(), file);
	s = "\t}\n";
	FS_Write(s.c_str(), s.length(), file);
}

void idSplinePosition::write(fileHandle_t file, const char *p) {
	idStr s = va("\t%s {\n", p);
	FS_Write(s.c_str(), s.length(), file);
	idCameraPosition::write(file, p);
	target.write(file, "target");
	s = "\t}\n";
	FS_Write(s.c_str(), s.length(), file);
}

void idCameraDef::addTarget(const char *name, idCameraPosition::positionType type) {
	const char *text = (name == NULL) ? va("target0%d", numTargets()+1) : name;
	idCameraPosition *pos = newFromType(type);
	if (pos) {
		pos->setName(name);
		targetPositions.Append(pos);
		activeTarget = numTargets()-1;
		if (activeTarget == 0) {
			// first one
			addEvent(idCameraEvent::EVENT_TARGET, name, 0);
		}
	}
}



idCameraDef camera;

extern "C" {
qboolean loadCamera(const char *name) {
  camera.clear();
  return static_cast<qboolean>(camera.load(name));
}

qboolean getCameraInfo(int time, float *origin, float*angles) {
	idVec3_t dir, org;
	org[0] = origin[0];
	org[1] = origin[1];
	org[2] = origin[2];
	float fov = 90;
	if (camera.getCameraInfo(time, org, dir, &fov)) {
		origin[0] = org[0];
		origin[1] = org[1];
		origin[2] = org[2];
		angles[1] = atan2 (dir[1], dir[0])*180/3.14159;
		angles[0] = asin (dir[2])*180/3.14159;
		return qtrue;
	}
	return qfalse;
}

void startCamera(int time) {
	camera.startCamera(time);
}

}