godot/scene/resources/shape_line_2d.cpp

/*************************************************************************/
/*  shape_line_2d.cpp                                                    */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur.                 */
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/* distribute, sublicense, and/or sell copies of the Software, and to    */
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#include "shape_line_2d.h"
#include "servers/physics_2d_server.h"
#include "servers/visual_server.h"
void LineShape2D::_update_shape() {

	Array arr;
	arr.push_back(normal);
	arr.push_back(d);
	Physics2DServer::get_singleton()->shape_set_data(get_rid(),arr);
	emit_changed();

}

void LineShape2D::set_normal(const Vector2& p_normal) {

	normal=p_normal;
	_update_shape();

}

void LineShape2D::set_d(real_t p_d) {

	d=p_d;
	_update_shape();

}

Vector2 LineShape2D::get_normal() const {

	return normal;
}
real_t LineShape2D::get_d() const {

	return d;
}


void LineShape2D::draw(const RID& p_to_rid,const Color& p_color) {

	Vector2 point = get_d() * get_normal();

	Vector2 l1[2]={point-get_normal().tangent()*100,point+get_normal().tangent()*100};
	VS::get_singleton()->canvas_item_add_line(p_to_rid,l1[0],l1[1],p_color,3);
	Vector2 l2[2]={point,point+get_normal()*30};
	VS::get_singleton()->canvas_item_add_line(p_to_rid,l2[0],l2[1],p_color,3);

}
Rect2 LineShape2D::get_rect() const{

	Vector2 point = get_d() * get_normal();

	Vector2 l1[2]={point-get_normal().tangent()*100,point+get_normal().tangent()*100};
	Vector2 l2[2]={point,point+get_normal()*30};
	Rect2 rect;
	rect.pos=l1[0];
	rect.expand_to(l1[1]);
	rect.expand_to(l2[0]);
	rect.expand_to(l2[1]);
	return rect;

}

void LineShape2D::_bind_methods() {

	ClassDB::bind_method(D_METHOD("set_normal","normal"),&LineShape2D::set_normal);
	ClassDB::bind_method(D_METHOD("get_normal"),&LineShape2D::get_normal);

	ClassDB::bind_method(D_METHOD("set_d","d"),&LineShape2D::set_d);
	ClassDB::bind_method(D_METHOD("get_d"),&LineShape2D::get_d);

	ADD_PROPERTY( PropertyInfo(Variant::VECTOR2,"normal"),"set_normal","get_normal") ;
	ADD_PROPERTY( PropertyInfo(Variant::REAL,"d"),"set_d","get_d") ;

}

LineShape2D::LineShape2D() : Shape2D( Physics2DServer::get_singleton()->shape_create(Physics2DServer::SHAPE_LINE)) {

	normal=Vector2(0,-1);
	d=0;
	_update_shape();
}