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https://github.com/OpenSpace/OpenSpace.git
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Created a basic point cloud renderable
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aniisaaden
199
modules/softwareintegration/rendering/renderablepointscloud.cpp
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199
modules/softwareintegration/rendering/renderablepointscloud.cpp
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/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2020 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#include <modules/softwareintegration/rendering/renderablepointscloud.h>
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#include <openspace/engine/globals.h>
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#include <openspace/engine/openspaceengine.h>
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#include <openspace/rendering/renderengine.h>
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#include <openspace/util/spicemanager.h>
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#include <openspace/util/updatestructures.h>
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#include <openspace/documentation/verifier.h>
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#include <ghoul/glm.h>
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#include <ghoul/filesystem/filesystem.h>
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#include <ghoul/opengl/programobject.h>
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namespace {
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constexpr const char* ProgramName = "shaderProgram";
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constexpr openspace::properties::Property::PropertyInfo ColorInfo = {
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"Color",
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"Color",
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"TODO"
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};
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constexpr openspace::properties::Property::PropertyInfo SizeInfo = {
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"Size",
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"Size",
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"TODO"
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};
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} // namespace
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namespace openspace {
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documentation::Documentation RenderablePointsCloud::Documentation() {
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using namespace documentation;
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return {
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"RenderablePointsCloud",
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"softwareintegration_renderable_pointscloud",
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{
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{
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ColorInfo.identifier,
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new DoubleVector3Verifier,
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Optional::Yes,
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ColorInfo.description
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},
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{
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SizeInfo.identifier,
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new DoubleVerifier,
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Optional::Yes,
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SizeInfo.description
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}
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}
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};
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}
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RenderablePointsCloud::RenderablePointsCloud(const ghoul::Dictionary& dictionary)
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: Renderable(dictionary)
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, _color(
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ColorInfo,
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glm::vec3(0.5f, 0.5, 0.5f),
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glm::vec3(0.f),
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glm::vec3(1.f)
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)
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, _size(SizeInfo, 0.5f, 0.f, 20.f)
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{
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documentation::testSpecificationAndThrow(
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Documentation(),
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dictionary,
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"RenderablePointsCloud"
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);
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if (dictionary.hasKey(ColorInfo.identifier)) {
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_color = dictionary.value<glm::vec3>(ColorInfo.identifier);
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}
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_color.setViewOption(properties::Property::ViewOptions::Color);
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addProperty(_color);
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if (dictionary.hasKey(SizeInfo.identifier)) {
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_size = dictionary.value<float>(SizeInfo.identifier);
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}
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addProperty(_size);
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}
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bool RenderablePointsCloud::isReady() const {
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return _shaderProgram != nullptr;
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}
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void RenderablePointsCloud::initializeGL() {
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_shaderProgram = global::renderEngine.buildRenderProgram(
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"PointsCloud",
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absPath("${MODULE_SOFTWAREINTEGRATION}/shaders/point_vs.glsl"),
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absPath("${MODULE_SOFTWAREINTEGRATION}/shaders/point_fs.glsl")
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);
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glGenVertexArrays(1, &_vaoID);
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glGenBuffers(1, &_vBufferID);
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glBindVertexArray(_vaoID);
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glBindBuffer(GL_ARRAY_BUFFER, _vBufferID);
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glEnableVertexAttribArray(0);
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glBindVertexArray(0);
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}
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void RenderablePointsCloud::deinitializeGL() {
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glDeleteVertexArrays(1, &_vaoID);
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_vaoID = 0;
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glDeleteBuffers(1, &_vBufferID);
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_vBufferID = 0;
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if (_shaderProgram) {
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global::renderEngine.removeRenderProgram(_shaderProgram.get());
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_shaderProgram = nullptr;
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}
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}
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void RenderablePointsCloud::render(const RenderData& data, RendererTasks&) {
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_shaderProgram->activate();
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glm::dmat4 modelTransform =
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glm::translate(glm::dmat4(1.0), data.modelTransform.translation) * // Translation
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glm::dmat4(data.modelTransform.rotation) * // Spice rotation
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glm::scale(glm::dmat4(1.0), glm::dvec3(data.modelTransform.scale));
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glm::dmat4 modelViewTransform = data.camera.combinedViewMatrix() * modelTransform;
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_shaderProgram->setUniform("modelViewTransform", modelViewTransform);
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_shaderProgram->setUniform(
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"MVPTransform",
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glm::dmat4(data.camera.projectionMatrix()) * modelViewTransform
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);
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_shaderProgram->setUniform("color", _color);
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_shaderProgram->setUniform("size", _size);
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// Changes GL state:
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glEnable(GL_BLEND);
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glBlendEquation(GL_FUNC_ADD);
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glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
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glEnable(GL_PROGRAM_POINT_SIZE); // Enable gl_PointSize in vertex
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glEnable(GL_POINT_SMOOTH);
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glBindVertexArray(_vaoID);
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glDrawArrays(GL_POINTS, 0, static_cast<GLsizei>(_varray.size()));
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glBindVertexArray(0);
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_shaderProgram->deactivate();
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}
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void RenderablePointsCloud::update(const UpdateData&) {
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// store data point in _varray
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_varray.push_back({ 0.f, 0.f, 0.f });
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glBindVertexArray(_vaoID);
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glBindBuffer(GL_ARRAY_BUFFER, _vBufferID);
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glBufferData(
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GL_ARRAY_BUFFER,
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_varray.size() * sizeof(Vertex),
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_varray.data(),
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GL_STATIC_DRAW
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);
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glVertexAttribPointer(
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0,
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3,
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GL_FLOAT,
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GL_FALSE,
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sizeof(Vertex),
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nullptr
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);
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glBindVertexArray(0);
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}
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} // namespace openspace
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@@ -0,0 +1,73 @@
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/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2020 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#ifndef __OPENSPACE_MODULE_SOFTWAREINTEGRATION___RENDERABLEPOINTSCLOUD___H__
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#define __OPENSPACE_MODULE_SOFTWAREINTEGRATION___RENDERABLEPOINTSCLOUD___H__
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#include <openspace/rendering/renderable.h>
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#include <openspace/properties/vector/vec3property.h>
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#include <ghoul/opengl/ghoul_gl.h>
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namespace ghoul::opengl {
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class ProgramObject;
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} // namespace ghoul::opengl
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namespace openspace::documentation { struct Documentation; }
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namespace openspace {
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class RenderablePointsCloud : public Renderable {
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public:
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RenderablePointsCloud(const ghoul::Dictionary& dictionary);
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void initializeGL() override;
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void deinitializeGL() override;
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bool isReady() const override;
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void render(const RenderData& data, RendererTasks& rendererTask) override;
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void update(const UpdateData& data) override;
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static documentation::Documentation Documentation();
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protected:
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struct Vertex {
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float location[3];
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};
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std::unique_ptr<ghoul::opengl::ProgramObject> _shaderProgram = nullptr;
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properties::Vec3Property _color;
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properties::FloatProperty _size;
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GLuint _vaoID = 0;
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GLuint _vBufferID = 0;
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std::vector<Vertex> _varray;
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};
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}// namespace openspace
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#endif // __OPENSPACE_MODULE_SOFTWAREINTEGRATION___RENDERABLEPOINTSCLOUD___H__
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