/*
 * © Copyright 2014 – Urheberrechtshinweis
 * Alle Rechte vorbehalten / All Rights Reserved
 *
 * Programmcode ist urheberrechtlich geschuetzt.
 * Das Urheberrecht liegt, soweit nicht ausdruecklich anders gekennzeichnet, bei Frank Ebner.
 * Keine Verwendung ohne explizite Genehmigung.
 * (vgl. § 106 ff UrhG / § 97 UrhG)
 */

#include "../../../fixC11.h"
#include "NavMeshRenderer.h"
#include "NavMeshModel.h"

NavMeshRenderer::NavMeshRenderer() {

//	colors[GridNode::TYPE_FLOOR] = Color(0.4, 0.4, 0.4);
//	colors[GridNode::TYPE_STAIR] = Color(0,0,1);
//	colors[GridNode::TYPE_ELEVATOR] = Color(0,0,1);
//	colors[GridNode::TYPE_DOOR] = Color(0.0, 0.0, 0.0);

//	colors[GridNode::TYPE_OUTDOOR] = Color(0.0, 0.5, 0.0);

}

void NavMeshRenderer::rebuildIfNeeded(NavMeshModel* model) {

	// rebuild needed?
	if (lastBuildID == model->getBuildID()) {return;}
	lastBuildID = model->getBuildID();

	// get the mesh
	NM::NavMesh<NM::NavMeshTriangle>* navMesh = model->getNavMesh();

	// clear previous
	triangles.clear();
	outlines.clear();

	// create triangles
	for (const NM::NavMeshTriangle* tria : *navMesh) {

		Point3 color;

		switch (tria->getType()) {
			case (int) NM::NavMeshType::FLOOR_INDOOR:	color = Point3(0.8, 0.8, 0.8); break;
			case (int) NM::NavMeshType::FLOOR_OUTDOOR:	color = Point3(0.1, 0.8, 0.1); break;
			case (int) NM::NavMeshType::DOOR:			color = Point3(0.7, 0.7, 0.8); break;
			case (int) NM::NavMeshType::STAIR_LEVELED:	color = Point3(0.5, 0.5, 0.5); break;
			case (int) NM::NavMeshType::STAIR_SKEWED:	color = Point3(0.6, 0.6, 0.6); break;
		}

		triangles.addTriangle(tria->getP1(), tria->getP3(), tria->getP2(), Point3(0,0,1), color.x, color.y, color.z, 1.0f);

	}

	// create outlines
	for (const NM::NavMeshTriangle* tria : *navMesh) {

		Point3 color;

		switch (tria->getType()) {
			case (int) NM::NavMeshType::FLOOR_INDOOR:	color = Point3(0.6, 0.6, 0.6); break;
			case (int) NM::NavMeshType::FLOOR_OUTDOOR:	color = Point3(0.0, 0.6, 0.0); break;
			case (int) NM::NavMeshType::DOOR:			color = Point3(0.5, 0.5, 0.6); break;
			case (int) NM::NavMeshType::STAIR_LEVELED:	color = Point3(0.4, 0.4, 0.4); break;
			case (int) NM::NavMeshType::STAIR_SKEWED:	color = Point3(0.4, 0.4, 0.4); break;
		}

		//const float o = 0.001f;
		outlines.addLine(tria->getP1(), tria->getP2(), color.x, color.y, color.z, 1);
		outlines.addLine(tria->getP2(), tria->getP3(), color.x, color.y, color.z, 1);
		outlines.addLine(tria->getP3(), tria->getP1(), color.x, color.y, color.z, 1);

	}

}

void NavMeshRenderer::render(const RenderSettings& rs, NavMeshModel* model) {

	if (model == nullptr) {return;}

	rebuildIfNeeded(model);

	rs.shader->bind();
	rs.shader->setModelMatrix(QMatrix4x4());

	rs.shader->setVertices(triangles.getVertices().data());
	rs.shader->setVertexColor(triangles.getRGBA().data());
	rs.funcs->glDrawArrays(GL_TRIANGLES, 0, triangles.getVertices().size()/3);
	rs.shader->unsetVertices();
	rs.shader->unsetVertexColor();

	rs.shader->setVertices(outlines.getVertices().data());
	rs.shader->setVertexColor(outlines.getRGBA().data());
	rs.funcs->glDrawArrays(GL_LINES, 0, outlines.getVertices().size()/3);
	rs.shader->unsetVertices();
	rs.shader->unsetVertexColor();

	rs.shader->release();

}