388 lines
8.2 KiB
C++
388 lines
8.2 KiB
C++
/*
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* Copyright 2011-2017 Branimir Karadzic. All rights reserved.
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* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
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*/
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#include "common.h"
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#include "bgfx_utils.h"
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#include <entry/cmd.h>
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#include <entry/input.h>
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#include <debugdraw/debugdraw.h>
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#include "camera.h"
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#include "imgui/imgui.h"
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#include <bx/uint32_t.h>
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namespace
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{
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void imageCheckerboard(void* _dst, uint32_t _width, uint32_t _height, uint32_t _step, uint32_t _0, uint32_t _1)
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{
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uint32_t* dst = (uint32_t*)_dst;
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for (uint32_t yy = 0; yy < _height; ++yy)
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{
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for (uint32_t xx = 0; xx < _width; ++xx)
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{
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uint32_t abgr = ( (xx/_step)&1) ^ ( (yy/_step)&1) ? _1 : _0;
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*dst++ = abgr;
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}
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}
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}
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class ExampleDebugDraw : public entry::AppI
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{
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public:
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ExampleDebugDraw(const char* _name, const char* _description)
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: entry::AppI(_name, _description)
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{
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}
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void init(int32_t _argc, const char* const* _argv, uint32_t _width, uint32_t _height) override
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{
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Args args(_argc, _argv);
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m_width = _width;
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m_height = _height;
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m_debug = BGFX_DEBUG_NONE;
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m_reset = BGFX_RESET_VSYNC | BGFX_RESET_MSAA_X16;
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bgfx::init(args.m_type, args.m_pciId);
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bgfx::reset(m_width, m_height, m_reset);
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// Enable m_debug text.
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bgfx::setDebug(m_debug);
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// Set view 0 clear state.
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bgfx::setViewClear(0
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, BGFX_CLEAR_COLOR|BGFX_CLEAR_DEPTH
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, 0x303030ff
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, 1.0f
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, 0
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);
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m_timeOffset = bx::getHPCounter();
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cameraCreate();
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const float initialPos[3] = { 0.0f, 2.0f, -12.0f };
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cameraSetPosition(initialPos);
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cameraSetVerticalAngle(0.0f);
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ddInit();
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uint8_t data[32*32*4];
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imageCheckerboard(data, 32, 32, 4, 0xff808080, 0xffc0c0c0);
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m_sprite = ddCreateSprite(32, 32, data);
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imguiCreate();
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}
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virtual int shutdown() override
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{
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imguiDestroy();
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ddDestroy(m_sprite);
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ddShutdown();
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cameraDestroy();
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// Shutdown bgfx.
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bgfx::shutdown();
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return 0;
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}
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template<typename Ty>
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bool intersect(const Ray& _ray, const Ty& _shape)
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{
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Hit hit;
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if (::intersect(_ray, _shape, &hit) )
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{
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ddPush();
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ddSetWireframe(false);
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ddSetColor(0xff0000ff);
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float tmp[3];
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bx::vec3Mul(tmp, hit.m_normal, 0.7f);
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float end[3];
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bx::vec3Add(end, hit.m_pos, tmp);
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ddDrawCone(hit.m_pos, end, 0.1f);
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ddPop();
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return true;
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}
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return false;
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}
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bool update() override
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{
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if (!entry::processEvents(m_width, m_height, m_debug, m_reset, &m_mouseState) )
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{
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imguiBeginFrame(
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m_mouseState.m_mx
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, m_mouseState.m_my
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, (m_mouseState.m_buttons[entry::MouseButton::Left ] ? IMGUI_MBUT_LEFT : 0)
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| (m_mouseState.m_buttons[entry::MouseButton::Right ] ? IMGUI_MBUT_RIGHT : 0)
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| (m_mouseState.m_buttons[entry::MouseButton::Middle] ? IMGUI_MBUT_MIDDLE : 0)
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, m_mouseState.m_mz
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, uint16_t(m_width)
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, uint16_t(m_height)
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);
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showExampleDialog(this);
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imguiEndFrame();
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int64_t now = bx::getHPCounter() - m_timeOffset;
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static int64_t last = now;
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const int64_t frameTime = now - last;
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last = now;
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const double freq = double(bx::getHPFrequency() );
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const float deltaTime = float(frameTime/freq);
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// Update camera.
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cameraUpdate(deltaTime, m_mouseState);
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float view[16];
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cameraGetViewMtx(view);
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float proj[16];
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// Set view and projection matrix for view 0.
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const bgfx::HMD* hmd = bgfx::getHMD();
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if (NULL != hmd && 0 != (hmd->flags & BGFX_HMD_RENDERING) )
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{
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float eye[3];
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cameraGetPosition(eye);
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bx::mtxQuatTranslationHMD(view, hmd->eye[0].rotation, eye);
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bgfx::setViewTransform(0, view, hmd->eye[0].projection, BGFX_VIEW_STEREO, hmd->eye[1].projection);
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bgfx::setViewRect(0, 0, 0, hmd->width, hmd->height);
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}
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else
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{
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bx::mtxProj(proj, 60.0f, float(m_width)/float(m_height), 0.1f, 100.0f, bgfx::getCaps()->homogeneousDepth);
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bgfx::setViewTransform(0, view, proj);
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bgfx::setViewRect(0, 0, 0, uint16_t(m_width), uint16_t(m_height) );
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}
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float mtxVp[16];
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bx::mtxMul(mtxVp, view, proj);
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float mtxInvVp[16];
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bx::mtxInverse(mtxInvVp, mtxVp);
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float zero[3] = {};
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float eye[] = { 5.0f, 10.0f, 5.0f };
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bx::mtxLookAt(view, eye, zero);
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bx::mtxProj(proj, 45.0f, float(m_width)/float(m_height), 1.0f, 15.0f, bgfx::getCaps()->homogeneousDepth);
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bx::mtxMul(mtxVp, view, proj);
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Ray ray = makeRay(
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(float(m_mouseState.m_mx)/float(m_width) * 2.0f - 1.0f)
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, -(float(m_mouseState.m_my)/float(m_height) * 2.0f - 1.0f)
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, mtxInvVp
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);
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const uint32_t selected = 0xff80ffff;
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ddBegin(0);
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ddDrawAxis(0.0f, 0.0f, 0.0f);
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ddPush();
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Aabb aabb =
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{
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{ 5.0f, 1.0f, 1.0f },
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{ 10.0f, 5.0f, 5.0f },
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};
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ddSetWireframe(true);
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ddSetColor(intersect(ray, aabb) ? selected : 0xff00ff00);
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ddDraw(aabb);
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ddPop();
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float time = float(now/freq);
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Obb obb;
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bx::mtxRotateX(obb.m_mtx, time);
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ddSetWireframe(true);
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ddSetColor(intersect(ray, obb) ? selected : 0xffffffff);
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ddDraw(obb);
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bx::mtxSRT(obb.m_mtx, 1.0f, 1.0f, 1.0f, time*0.23f, time, 0.0f, 3.0f, 0.0f, 0.0f);
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ddPush();
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toAabb(aabb, obb);
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ddSetWireframe(true);
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ddSetColor(0xff0000ff);
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ddDraw(aabb);
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ddPop();
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ddSetWireframe(false);
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ddSetColor(intersect(ray, obb) ? selected : 0xffffffff);
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ddDraw(obb);
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ddSetColor(0xffffffff);
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ddSetTranslate(0.0f, -2.0f, 0.0f);
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ddDrawGrid(Axis::Y, zero, 20, 1.0f);
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ddSetTransform(NULL);
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ddDrawFrustum(mtxVp);
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ddPush();
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Sphere sphere = { { 0.0f, 5.0f, 0.0f }, 1.0f };
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ddSetColor(intersect(ray, sphere) ? selected : 0xfff0c0ff);
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ddSetWireframe(true);
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ddSetLod(3);
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ddDraw(sphere);
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ddSetWireframe(false);
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sphere.m_center[0] = -2.0f;
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ddSetColor(intersect(ray, sphere) ? selected : 0xc0ffc0ff);
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ddSetLod(2);
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ddDraw(sphere);
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sphere.m_center[0] = -4.0f;
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ddSetColor(intersect(ray, sphere) ? selected : 0xa0f0ffff);
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ddSetLod(1);
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ddDraw(sphere);
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sphere.m_center[0] = -6.0f;
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ddSetColor(intersect(ray, sphere) ? selected : 0xffc0ff00);
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ddSetLod(0);
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ddDraw(sphere);
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ddPop();
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ddSetColor(0xffffffff);
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ddPush();
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{
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float normal[3] = { 0.0f, 0.0f, 1.0f };
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float center[3] = { -8.0f, 0.0f, 0.0f };
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ddPush();
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ddSetStipple(true, 1.0f, time*0.1f);
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ddSetColor(0xff0000ff);
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ddDrawCircle(normal, center, 1.0f, 0.5f + bx::fsin(time*10.0f) );
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ddPop();
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ddSetSpin(time);
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ddDrawQuad(m_sprite, normal, center, 2.0f);
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}
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ddPop();
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ddPush();
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ddSetStipple(true, 1.0f, -time*0.1f);
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ddDrawCircle(Axis::Z, -8.0f, 0.0f, 0.0f, 1.25f, 2.0f);
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ddPop();
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ddPush();
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ddSetLod(UINT8_MAX);
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ddPush();
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ddSetSpin(time*0.3f);
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{
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Cone cone =
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{
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{ -11.0f, 4.0f, 0.0f },
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{ -13.0f, 6.0f, 1.0f },
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1.0f
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};
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Cylinder cylinder =
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{
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{ -9.0f, 2.0f, -1.0f },
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{ -11.0f, 4.0f, 0.0f },
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0.5f
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};
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ddSetColor(false
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|| intersect(ray, cone)
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|| intersect(ray, cylinder)
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? selected
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: 0xffffffff
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);
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ddDraw(cone);
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ddDraw(cylinder);
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}
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ddPop();
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{
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ddSetLod(0);
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Capsule capsule =
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{
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{ 0.0f, 7.0f, 0.0f },
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{ -6.0f, 7.0f, 0.0f },
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0.5f
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};
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ddSetColor(intersect(ray, capsule) ? selected : 0xffffffff);
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ddDraw(capsule);
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}
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ddPop();
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ddPush();
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float mtx[16];
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bx::mtxSRT(mtx
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, 1.0f, 1.0f, 1.0f
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, 0.0f, time, time*0.53f
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, -10.0f, 1.0f, 10.0f
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);
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Cylinder cylinder =
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{
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{ -10.0f, 1.0f, 10.0f },
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{ 0.0f, 0.0f, 0.0f },
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1.0f
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};
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float up[3] = { 0.0f, 4.0f, 0.0f };
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bx::vec3MulMtx(cylinder.m_end, up, mtx);
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ddSetColor(intersect(ray, cylinder) ? selected : 0xffffffff);
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ddDraw(cylinder);
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ddPush();
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toAabb(aabb, cylinder);
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ddSetWireframe(true);
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ddSetColor(0xff0000ff);
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ddDraw(aabb);
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ddPop();
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ddPop();
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ddDrawOrb(-11.0f, 0.0f, 0.0f, 1.0f);
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ddEnd();
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// Advance to next frame. Rendering thread will be kicked to
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// process submitted rendering primitives.
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bgfx::frame();
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return true;
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}
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return false;
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}
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entry::MouseState m_mouseState;
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SpriteHandle m_sprite;
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int64_t m_timeOffset;
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uint32_t m_width;
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uint32_t m_height;
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uint32_t m_debug;
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uint32_t m_reset;
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};
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} // namespace
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ENTRY_IMPLEMENT_MAIN(ExampleDebugDraw, "29-debugdraw", "Debug draw.");
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