view engine/core/view/renderers/instancerenderer.cpp @ 407:f27880d4c08c

Moved getAngleBetween() form Camera to angles.h and updated it to not use the camera angle in it's calculation. Added camera rotation to the angle calculation for selecting the correct image by angles. Added a call to setRotation() to make sure that instance rotation is valid.
author prock@33b003aa-7bff-0310-803a-e67f0ece8222
date Fri, 29 Jan 2010 21:03:51 +0000
parents ab41334e8a57
children 16c2b3ee59ce
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/***************************************************************************
 *   Copyright (C) 2005-2008 by the FIFE team                              *
 *   http://www.fifengine.de                                               *
 *   This file is part of FIFE.                                            *
 *                                                                         *
 *   FIFE is free software; you can redistribute it and/or                 *
 *   modify it under the terms of the GNU Lesser General Public            *
 *   License as published by the Free Software Foundation; either          *
 *   version 2.1 of the License, or (at your option) any later version.    *
 *                                                                         *
 *   This library is distributed in the hope that it will be useful,       *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU     *
 *   Lesser General Public License for more details.                       *
 *                                                                         *
 *   You should have received a copy of the GNU Lesser General Public      *
 *   License along with this library; if not, write to the                 *
 *   Free Software Foundation, Inc.,                                       *
 *   51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA          *
 ***************************************************************************/

// Standard C++ library includes

// 3rd party library includes

// FIFE includes
// These includes are split up in two parts, separated by one empty line
// First block: files included from the FIFE root src directory
// Second block: files included from the same folder
#include "video/renderbackend.h"
#include "video/image.h"
#include "video/sdl/sdlimage.h"
#include "video/imagepool.h"
#include "video/animation.h"
#include "video/animationpool.h"
#include "util/math/fife_math.h"
#include "util/log/logger.h"
#include "model/metamodel/grids/cellgrid.h"
#include "model/metamodel/action.h"
#include "model/structures/instance.h"
#include "model/structures/layer.h"
#include "model/structures/location.h"

#include "view/camera.h"
#include "view/visual.h"
#include "instancerenderer.h"

namespace {
	unsigned int scale(unsigned int val, double factor) {
		return static_cast<unsigned int>(ceil(static_cast<double>(val) * factor));
	}
}

namespace FIFE {
	static Logger _log(LM_VIEWVIEW);

	InstanceRenderer::OutlineInfo::OutlineInfo():
		r(0),
		g(0),
		b(0),
		width(1),
		outline(NULL),
		curimg(NULL) {
	}
	InstanceRenderer::ColoringInfo::ColoringInfo():
		r(0),
		g(0),
		b(0),
		overlay(NULL),
		curimg(NULL) {
	}

	InstanceRenderer::OutlineInfo::~OutlineInfo() {
		delete outline;
	}

	InstanceRenderer::ColoringInfo::~ColoringInfo() {
		delete overlay;
	}

	InstanceRenderer* InstanceRenderer::getInstance(IRendererContainer* cnt) {
		return dynamic_cast<InstanceRenderer*>(cnt->getRenderer("InstanceRenderer"));
	}

	InstanceRenderer::InstanceRenderer(RenderBackend* renderbackend, int position, ImagePool* imagepool, AnimationPool* animpool):
		RendererBase(renderbackend, position),
		m_imagepool(imagepool),
		m_animationpool(animpool) {
		setEnabled(true);
	}

 	InstanceRenderer::InstanceRenderer(const InstanceRenderer& old):
		RendererBase(old),
		m_imagepool(old.m_imagepool),
		m_animationpool(old.m_animationpool) {
		setEnabled(true);
	}

	RendererBase* InstanceRenderer::clone() {
		return new InstanceRenderer(*this);
	}

	InstanceRenderer::~InstanceRenderer() {
	}

	void InstanceRenderer::render(Camera* cam, Layer* layer, std::vector<Instance*>& instances) {
		// patch #335 by abeyer
		if (!layer->areInstancesVisible()) {
			FL_DBG(_log, "Layer instances hidden");
			return;
		}

		FL_DBG(_log, "Iterating layer...");
		CellGrid* cg = layer->getCellGrid();
		if (!cg) {
			FL_WARN(_log, "No cellgrid assigned to layer, cannot draw instances");
			return;
		}

		const bool any_effects = !(m_instance_outlines.empty() && m_instance_colorings.empty());

		std::vector<Instance*>::const_iterator instance_it = instances.begin();
		for (;instance_it != instances.end(); ++instance_it) {
			FL_DBG(_log, "Iterating instances...");
			Instance* instance = (*instance_it);
			InstanceVisual* visual = instance->getVisual<InstanceVisual>();

			unsigned char trans = visual->getTransparency();

			/**
			 *  the instance transparency value take precedence. If it's 0 use the layer trans
			 *
			 *	\todo Instances cannot be completely opaque when their layer's transparency is non zero.
			 */
			if (trans == 0) {
				unsigned char layer_trans = layer->getLayerTransparency();
				trans = layer_trans;
			}

			InstanceVisualCacheItem& vc = visual->getCacheItem(cam);
			FL_DBG(_log, LMsg("Instance layer coordinates = ") << instance->getLocationRef().getLayerCoordinates());

			if (any_effects) {
				InstanceToOutlines_t::iterator outline_it = m_instance_outlines.find(instance);
				if (outline_it != m_instance_outlines.end()) {
					bindOutline(outline_it->second, vc, cam)->render(vc.dimensions, 255-trans);
				}

				InstanceToColoring_t::iterator coloring_it = m_instance_colorings.find(instance);
				if (coloring_it != m_instance_colorings.end()) {
					bindColoring(coloring_it->second, vc, cam)->render(vc.dimensions, 255-trans);
					continue; // Skip normal rendering after drawing overlay
				}
			}

			vc.image->render(vc.dimensions, 255-trans);
		}
	}

	Image* InstanceRenderer::bindOutline(OutlineInfo& info, InstanceVisualCacheItem& vc, Camera* cam) {
		if (info.curimg == vc.image) {
			return info.outline;
		} else {
			info.curimg = vc.image;
		}

		if (info.outline) {
			delete info.outline; // delete old mask
			info.outline = NULL;
		}
		SDL_Surface* surface = vc.image->getSurface();
		SDL_Surface* outline_surface = SDL_ConvertSurface(surface, surface->format, surface->flags);

		// needs to use SDLImage here, since GlImage does not support drawing primitives atm
		SDLImage* img = new SDLImage(outline_surface);

		// TODO: optimize...
		uint8_t r, g, b, a = 0;

		// vertical sweep
		for (unsigned int x = 0; x < img->getWidth(); x ++) {
			uint8_t prev_a = 0;
			for (unsigned int y = 0; y < img->getHeight(); y ++) {
				vc.image->getPixelRGBA(x, y, &r, &g, &b, &a);
				if ((a == 0 || prev_a == 0) && (a != prev_a)) {
					if (a < prev_a) {
						for (unsigned int yy = y; yy < y + info.width; yy++) {
							img->putPixel(x, yy, info.r, info.g, info.b);
						}
					} else {
						for (unsigned int yy = y - info.width; yy < y; yy++) {
							img->putPixel(x, yy, info.r, info.g, info.b);
						}
					}
				}
				prev_a = a;
			}
		}
		// horizontal sweep
		for (unsigned int y = 0; y < img->getHeight(); y ++) {
			uint8_t prev_a = 0;
			for (unsigned int x = 0; x < img->getWidth(); x ++) {
				vc.image->getPixelRGBA(x, y, &r, &g, &b, &a);
				if ((a == 0 || prev_a == 0) && (a != prev_a)) {
					if (a < prev_a) {
						for (unsigned int xx = x; xx < x + info.width; xx++) {
							img->putPixel(xx, y, info.r, info.g, info.b);
						}
					} else {
						for (unsigned int xx = x - info.width; xx < x; xx++) {
							img->putPixel(xx, y, info.r, info.g, info.b);
						}
					}
				}
				prev_a = a;
			}
		}

		// In case of OpenGL backend, SDLImage needs to be converted
		info.outline = m_renderbackend->createImage(img->detachSurface());
		delete img;
		return info.outline;
	}

	Image* InstanceRenderer::bindColoring(ColoringInfo& info, InstanceVisualCacheItem& vc, Camera* cam) {
		if (info.curimg == vc.image) {
			return info.overlay;
		} else {
			info.curimg = vc.image;
		}
		if (info.overlay) {
			delete info.overlay; // delete old mask
			info.overlay = NULL;
		}
		SDL_Surface* surface = vc.image->getSurface();
		SDL_Surface* overlay_surface = SDL_ConvertSurface(surface, surface->format, surface->flags);

		// needs to use SDLImage here, since GlImage does not support drawing primitives atm
		SDLImage* img = new SDLImage(overlay_surface);

		uint8_t r, g, b, a = 0;

		for (unsigned int x = 0; x < img->getWidth(); x ++) {
			for (unsigned int y = 0; y < img->getHeight(); y ++) {
				vc.image->getPixelRGBA(x, y, &r, &g, &b, &a);
				if (a > 0) {
					img->putPixel(x, y, (r + info.r) >> 1, (g + info.g) >> 1, (b + info.b) >> 1);
				}
			}
		}

		// In case of OpenGL backend, SDLImage needs to be converted
		info.overlay = m_renderbackend->createImage(img->detachSurface());
		delete img;
		return info.overlay;
	}

	void InstanceRenderer::addOutlined(Instance* instance, int r, int g, int b, int width) {
		OutlineInfo info;
		info.r = r;
		info.g = g;
		info.b = b;
		info.width = width;

		m_instance_outlines[instance] = info;
	}

	void InstanceRenderer::addColored(Instance* instance, int r, int g, int b) {
		ColoringInfo info;
		info.r = r;
		info.g = g;
		info.b = b;

		m_instance_colorings[instance] = info;
	}

	void InstanceRenderer::removeOutlined(Instance* instance) {
		m_instance_outlines.erase(instance);
	}

	void InstanceRenderer::removeColored(Instance* instance) {
		m_instance_colorings.erase(instance);
	}

	void InstanceRenderer::removeAllOutlines() {
		m_instance_outlines.clear();
	}

	void InstanceRenderer::removeAllColored() {
		m_instance_colorings.clear();
	}

	void InstanceRenderer::reset() {
		removeAllOutlines();
		removeAllColored();
	}

}