// This file may be redistributed and modified only under the terms of
// the GNU General Public License (See COPYING for details).
// Copyright (C) 2003 Alistair Riddoch

#include <Mercator/Segment.h>
#include <Mercator/Surface.h>
#include <Mercator/FillShader.h>
#include <Mercator/ThresholdShader.h>
#include <Mercator/DepthShader.h>
#include <Mercator/GrassShader.h>

template<class ShaderType>
int shadeTest(Mercator::Segment& segment) {
	ShaderType shader;
	Mercator::Surface surface(segment, shader);

	if (surface.getChannels() != 4) {
		std::cerr << "Surface does not have 4 channels."
				  << std::endl;
		return 1;
	}

	if (shader.checkIntersect(segment)) {
		surface.populate();
	}
	return 0;
}

int main() {
	Mercator::Segment segment(0, 0, Mercator::defaultResolution);
	segment.populate();

	int errorCount = 0;
	errorCount += shadeTest<Mercator::FillShader>(segment);
	errorCount += shadeTest<Mercator::HighShader>(segment);
	errorCount += shadeTest<Mercator::LowShader>(segment);
	errorCount += shadeTest<Mercator::BandShader>(segment);
	errorCount += shadeTest<Mercator::DepthShader>(segment);
	errorCount += shadeTest<Mercator::GrassShader>(segment);

	return (errorCount ? 1 : 0);
}
