From 3356da01513860d899cde503408436f7e1918f63 Mon Sep 17 00:00:00 2001 From: SmallJoker Date: Wed, 4 Nov 2020 21:46:18 +0100 Subject: Add model[] formspec element (#10320) Formspec element to display models, written by @kilbith, rebased and tweaked. Co-authored-by: Jean-Patrick Guerrero Co-authored-by: sfan5 --- src/gui/guiScene.cpp | 257 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 257 insertions(+) create mode 100644 src/gui/guiScene.cpp (limited to 'src/gui/guiScene.cpp') diff --git a/src/gui/guiScene.cpp b/src/gui/guiScene.cpp new file mode 100644 index 000000000..08f119e07 --- /dev/null +++ b/src/gui/guiScene.cpp @@ -0,0 +1,257 @@ +/* +Minetest +Copyright (C) 2020 Jean-Patrick Guerrero + +This program 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 program 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 program; if not, write to the Free Software Foundation, Inc., +51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#include "guiScene.h" + +#include +#include +#include +#include "porting.h" + +GUIScene::GUIScene(gui::IGUIEnvironment *env, scene::ISceneManager *smgr, + gui::IGUIElement *parent, core::recti rect, s32 id) + : IGUIElement(gui::EGUIET_ELEMENT, env, parent, id, rect) +{ + m_driver = env->getVideoDriver(); + m_smgr = smgr->createNewSceneManager(false); + + m_cam = m_smgr->addCameraSceneNode(0, v3f(0.f, 0.f, -100.f), v3f(0.f)); + m_cam->setFOV(30.f * core::DEGTORAD); + + scene::ILightSceneNode *light = m_smgr->addLightSceneNode(m_cam); + light->setRadius(1000.f); + + m_smgr->getParameters()->setAttribute(scene::ALLOW_ZWRITE_ON_TRANSPARENT, true); +} + +GUIScene::~GUIScene() +{ + setMesh(nullptr); + + m_smgr->drop(); +} + +scene::IAnimatedMeshSceneNode *GUIScene::setMesh(scene::IAnimatedMesh *mesh) +{ + if (m_mesh) { + m_mesh->remove(); + m_mesh = nullptr; + } + + if (!mesh) + return nullptr; + + m_mesh = m_smgr->addAnimatedMeshSceneNode(mesh); + m_mesh->setPosition(-m_mesh->getBoundingBox().getCenter()); + m_mesh->animateJoints(); + return m_mesh; +} + +void GUIScene::setTexture(u32 idx, video::ITexture *texture) +{ + video::SMaterial &material = m_mesh->getMaterial(idx); + material.MaterialType = video::EMT_TRANSPARENT_ALPHA_CHANNEL; + material.MaterialTypeParam = 0.5f; + material.TextureLayer[0].Texture = texture; + material.setFlag(video::EMF_LIGHTING, false); + material.setFlag(video::EMF_FOG_ENABLE, true); + material.setFlag(video::EMF_BILINEAR_FILTER, false); + material.setFlag(video::EMF_BACK_FACE_CULLING, false); +} + +void GUIScene::draw() +{ + // Control rotation speed based on time + u64 new_time = porting::getTimeMs(); + u64 dtime_ms = 0; + if (m_last_time != 0) + dtime_ms = porting::getDeltaMs(m_last_time, new_time); + m_last_time = new_time; + + core::rect oldViewPort = m_driver->getViewPort(); + m_driver->setViewPort(getAbsoluteClippingRect()); + core::recti borderRect = Environment->getRootGUIElement()->getAbsoluteClippingRect(); + + if (m_bgcolor != 0) { + Environment->getSkin()->draw3DSunkenPane( + this, m_bgcolor, false, true, borderRect, 0); + } + + core::dimension2d size = getAbsoluteClippingRect().getSize(); + m_smgr->getActiveCamera()->setAspectRatio((f32)size.Width / (f32)size.Height); + + if (!m_target) { + updateCamera(m_smgr->addEmptySceneNode()); + rotateCamera(v3f(0.f)); + m_cam->bindTargetAndRotation(true); + } + + cameraLoop(); + + // Continuous rotation + if (m_inf_rot) + rotateCamera(v3f(0.f, -0.03f * (float)dtime_ms, 0.f)); + + m_smgr->drawAll(); + + if (m_initial_rotation && m_mesh) { + rotateCamera(v3f(m_custom_rot.X, m_custom_rot.Y, 0.f)); + calcOptimalDistance(); + + m_initial_rotation = false; + } + + m_driver->setViewPort(oldViewPort); +} + +bool GUIScene::OnEvent(const SEvent &event) +{ + if (m_mouse_ctrl && event.EventType == EET_MOUSE_INPUT_EVENT) { + if (event.MouseInput.Event == EMIE_LMOUSE_PRESSED_DOWN) { + m_last_pos = v2f((f32)event.MouseInput.X, (f32)event.MouseInput.Y); + return true; + } else if (event.MouseInput.Event == EMIE_MOUSE_MOVED) { + if (event.MouseInput.isLeftPressed()) { + m_curr_pos = v2f((f32)event.MouseInput.X, (f32)event.MouseInput.Y); + + rotateCamera(v3f( + m_last_pos.Y - m_curr_pos.Y, + m_curr_pos.X - m_last_pos.X, 0.f)); + + m_last_pos = m_curr_pos; + return true; + } + } + } + + return gui::IGUIElement::OnEvent(event); +} + +void GUIScene::setStyles(const std::array &styles) +{ + StyleSpec::State state = StyleSpec::STATE_DEFAULT; + StyleSpec style = StyleSpec::getStyleFromStatePropagation(styles, state); + + setNotClipped(style.getBool(StyleSpec::NOCLIP, false)); + setBackgroundColor(style.getColor(StyleSpec::BGCOLOR, m_bgcolor)); +} + +/* Camera control functions */ + +inline void GUIScene::calcOptimalDistance() +{ + core::aabbox3df box = m_mesh->getBoundingBox(); + f32 width = box.MaxEdge.X - box.MinEdge.X; + f32 height = box.MaxEdge.Y - box.MinEdge.Y; + f32 depth = box.MaxEdge.Z - box.MinEdge.Z; + f32 max_width = width > depth ? width : depth; + + const scene::SViewFrustum *f = m_cam->getViewFrustum(); + f32 cam_far = m_cam->getFarValue(); + f32 far_width = core::line3df(f->getFarLeftUp(), f->getFarRightUp()).getLength(); + f32 far_height = core::line3df(f->getFarLeftUp(), f->getFarLeftDown()).getLength(); + + core::recti rect = getAbsolutePosition(); + f32 zoomX = rect.getWidth() / max_width; + f32 zoomY = rect.getHeight() / height; + f32 dist; + + if (zoomX < zoomY) + dist = (max_width / (far_width / cam_far)) + (0.5f * max_width); + else + dist = (height / (far_height / cam_far)) + (0.5f * max_width); + + m_cam_distance = dist; + m_update_cam = true; +} + +void GUIScene::updateCamera(scene::ISceneNode *target) +{ + m_target = target; + updateTargetPos(); + + m_last_target_pos = m_target_pos; + updateCameraPos(); + + m_update_cam = true; +} + +void GUIScene::updateTargetPos() +{ + m_last_target_pos = m_target_pos; + m_target->updateAbsolutePosition(); + m_target_pos = m_target->getAbsolutePosition(); +} + +void GUIScene::setCameraRotation(v3f rot) +{ + correctBounds(rot); + + core::matrix4 mat; + mat.setRotationDegrees(rot); + + m_cam_pos = v3f(0.f, 0.f, m_cam_distance); + mat.rotateVect(m_cam_pos); + + m_cam_pos += m_target_pos; + m_cam->setPosition(m_cam_pos); + m_update_cam = false; +} + +bool GUIScene::correctBounds(v3f &rot) +{ + const float ROTATION_MAX_1 = 60.0f; + const float ROTATION_MAX_2 = 300.0f; + + // Limit and correct the rotation when needed + if (rot.X < 90.f) { + if (rot.X > ROTATION_MAX_1) { + rot.X = ROTATION_MAX_1; + return true; + } + } else if (rot.X < ROTATION_MAX_2) { + rot.X = ROTATION_MAX_2; + return true; + } + + // Not modified + return false; +} + +void GUIScene::cameraLoop() +{ + updateCameraPos(); + updateTargetPos(); + + if (m_target_pos != m_last_target_pos) + m_update_cam = true; + + if (m_update_cam) { + m_cam_pos = m_target_pos + (m_cam_pos - m_target_pos).normalize() * m_cam_distance; + + v3f rot = getCameraRotation(); + if (correctBounds(rot)) + setCameraRotation(rot); + + m_cam->setPosition(m_cam_pos); + m_cam->setTarget(m_target_pos); + + m_update_cam = false; + } +} -- cgit v1.2.3