110 lines
5.8 KiB
C++
110 lines
5.8 KiB
C++
/**************************************************************************************/
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/* */
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/* Visualization Library */
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/* http://visualizationlibrary.org */
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/* */
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/* Copyright (c) 2005-2020, Michele Bosi */
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/* All rights reserved. */
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/* */
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/* Redistribution and use in source and binary forms, with or without modification, */
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/* are permitted provided that the following conditions are met: */
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/* */
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/* - Redistributions of source code must retain the above copyright notice, this */
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/* list of conditions and the following disclaimer. */
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/* */
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/* - Redistributions in binary form must reproduce the above copyright notice, this */
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/* list of conditions and the following disclaimer in the documentation and/or */
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/* other materials provided with the distribution. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND */
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/* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED */
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/* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
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/* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR */
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/* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES */
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/* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; */
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/* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON */
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/* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
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/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS */
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/* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/**************************************************************************************/
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#ifndef SlicedVolume_INCLUDE_ONCE
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#define SlicedVolume_INCLUDE_ONCE
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#include <vlVolume/link_config.hpp>
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#include <vlGraphics/Actor.hpp>
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#include <vlGraphics/Geometry.hpp>
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#include <vlGraphics/Light.hpp>
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namespace vl
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{
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class VLVOLUME_EXPORT SlicedVolume: public ActorEventCallback
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{
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VL_INSTRUMENT_CLASS(vl::SlicedVolume, ActorEventCallback)
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public:
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//! Constructor.
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SlicedVolume();
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void onActorRenderStarted(Actor* actor, real frame_clock, const Camera* cam, Renderable* renderable, const Shader* shader, int pass);
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void onActorDelete(Actor*) { mActor = NULL; }
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//! Binds a SlicedVolume to an Actor so that the SlicedVolume can generate the viewport aligned slices' geometry for the Actor as appropriate.
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void bindActor(Actor*);
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//! Updates the uniforms used by the GLSLProgram to render the volume each time the onActorRenderStarted() method is called.
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virtual void updateUniforms(Actor* actor, real clock, const Camera* camera, Renderable* rend, const Shader* shader);
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//! Defines the number of slices used to render the volume: more slices generate a better (and slower) rendering. Default is 0.
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//! If equal to 0 the number of slices is computed automatically as max(viewport.width, viewport.height).
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void setSliceCount(int count) { mSliceCount = count; }
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//! Returns the number of slices used to render the volume.
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//! If equal to 0 the number of slices is computed automatically as max(viewport.width, viewport.height).
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int sliceCount() const { return mSliceCount; }
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//! Returns the Geometry associated to a SlicedVolume and its bound Actor
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Geometry* geometry() { return mGeometry.get(); }
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//! Returns the Geometry associated to a SlicedVolume and its bound Actor
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const Geometry* geometry() const { return mGeometry.get(); }
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//! Defines the dimensions of the box enclosing the volume
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void setBox(const AABB& box);
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//! The dimensions of the box enclosing the volume
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const AABB& box() const { return mBox; }
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//! Returns the texture coordinates assigned to each of the 8 box corners of the volume
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const fvec3* texCoords() const { return mTexCoord; }
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//! Returns the texture coordinates assigned to each of the 8 box corners of the volume
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fvec3* texCoords() { return mTexCoord; }
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//! Generates a default set of texture coordinates for the 8 box corners of the volume based on the given texture dimensions.
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void generateTextureCoordinates(const ivec3& size);
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//! Generates a default set of texture coordinates for the 8 box corners of the volume based on the given texture dimensions.
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//! Use this function to visualize a subset of the volume. The subset is defined by \p min_corner and \p max_corner.
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void generateTextureCoordinates(const ivec3& img_size, const ivec3& min_corner, const ivec3& max_corner);
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//! Returns the currently bound actor
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const Actor* actor() const { return mActor; }
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//! Returns the currently bound actor
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Actor* actor() { return mActor; }
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protected:
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int mSliceCount;
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ref<Geometry> mGeometry;
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AABB mBox;
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fmat4 mCache;
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fvec3 mTexCoord[8];
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// Naked pointer on purpose in order not to create cyclical dependencies and mem leaks: the Actor owns the SlicedVolume
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Actor* mActor;
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};
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}
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#endif
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