bgfx/examples/29-debugdraw/debugdraw.cpp
Branimir Karadžić 917385f79e Cleanup.
2017-06-29 22:23:18 -07:00

313 lines
6.7 KiB
C++

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