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///////////////////////////////////////////////////////////////////////////////////////////////////
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// Copyright 2016 Leszek Koltunski //
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// //
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// This file is part of Distorted. //
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// //
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// Distorted is free software: you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation, either version 2 of the License, or //
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// (at your option) any later version. //
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// //
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// Distorted is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with Distorted. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////////////////////
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package org.distorted.library;
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import android.opengl.GLES30;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Class which represents the Screen.
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* <p>
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* User is able to render to it just like to a DistortedFramebuffer.
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*/
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public class DistortedScreen extends DistortedRenderable implements DistortedOutputSurface
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{
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private int[] mFBOH = new int[1];
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private DistortedProjection mProjection;
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///////////////////////////////////////////////////////////////////////////////////////////////////
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public void create() {}
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void delete() {}
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void destroy() {}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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// PUBLIC API
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Create a new Screen.
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* <p>
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* Has to be followed by a 'resize()' to set the size.
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*/
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public DistortedScreen()
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{
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super(0,0,DONT_CREATE);
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mProjection = new DistortedProjection();
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mFBOH[0] = 0;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Bind this Surface as a Framebuffer we can render to.
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*/
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public void setAsOutput()
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{
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GLES30.glBindFramebuffer(GLES30.GL_FRAMEBUFFER, mFBOH[0]);
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GLES30.glEnable(GLES30.GL_DEPTH_TEST);
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GLES30.glDepthMask(true);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Draw the (texture,mesh,effects) object to the Framebuffer.
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* <p>
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* Must be called from a thread holding OpenGL Context.
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*
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* @param surface InputSurface to skin our Mesh with.
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* @param mesh Class descendant from MeshObject
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* @param effects The DistortedEffects to use when rendering
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* @param time Current time, in milliseconds.
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*/
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public void renderTo(DistortedInputSurface surface, MeshObject mesh, DistortedEffects effects, long time)
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{
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surface.create(); // Watch out - this needs to be before
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create(); // the 'setAsInput' because this has side-effects!
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if( surface.setAsInput() )
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{
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DistortedRenderable.deleteAllMarked();
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effects.drawPriv(surface.getWidth()/2.0f, surface.getHeight()/2.0f, mesh, this, time);
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Draws the Tree, and all its children, to the Framebuffer.
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* <p>
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* Must be called from a thread holding OpenGL Context.
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*
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* @param dt DistortedTree to render.
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* @param time Current time, in milliseconds. This will be passed to all the Effects stored in the Tree.
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*/
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public void renderTo(DistortedTree dt, long time)
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{
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DistortedRenderable.deleteAllMarked();
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create();
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dt.drawRecursive(time,this);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Create new Projection matrix.
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*
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* @param fov Vertical 'field of view' of the Projection frustrum (in degrees).
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* @param x X-coordinate of the point at which our camera looks at. 0 is the center.
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* @param y Y-coordinate of the point at which our camera looks at. 0 is the center.
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*/
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public void setProjection(float fov, float x, float y)
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{
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mProjection.set(fov,x,y);
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mProjection.createProjection();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Resize the underlying Projection.
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*
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* @param width The new width.
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* @param height The new height.
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*/
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public void resize(int width, int height)
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{
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if( mProjection.resize(width,height) )
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{
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mSizeX = width;
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mSizeY = height;
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}
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}
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//////////////////////////////////////////////////////////////////////////////////////////////////
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/**
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* Return Projection stored in this Framebuffer.
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*
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* @return DistortedProjection object.
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*/
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public DistortedProjection getProjection()
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{
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return mProjection;
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}
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}
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