Added Box2D

This commit is contained in:
Julian Nießner
2018-05-06 12:43:20 +02:00
parent cb5469bb89
commit d175d433a8
351 changed files with 123545 additions and 1 deletions

View File

@@ -0,0 +1,616 @@
//
// Copyright (c) 2009-2010 Mikko Mononen memon@inside.org
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would be
// appreciated but is not required.
// 2. Altered source versions must be plainly marked as such, and must not be
// misrepresented as being the original software.
// 3. This notice may not be removed or altered from any source distribution.
//
// Source altered and distributed from https://github.com/AdrienHerubel/imgui
#include <stdio.h>
#include <string.h>
//#define _USE_MATH_DEFINES
#include <math.h>
#include "imgui.h"
#include "RenderGL3.h"
#ifdef _MSC_VER
#define snprintf _snprintf
#endif
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
struct GuiState
{
GuiState()
{
left = false;
leftPressed = false;
leftReleased = false;
mx = -1;
my = -1;
scroll = 0;
active = 0;
hot = 0;
hotToBe = 0;
isHot = false;
isActive = false;
wentActive = false;
dragX = 0;
dragY = 0;
dragOrig = 0;
widgetX = 0;
widgetY = 0;
widgetW = 100;
insideCurrentScroll = false;
areaId = 0;
widgetId = 0;
}
bool left;
bool leftPressed, leftReleased;
int mx, my;
int scroll;
unsigned int active;
unsigned int hot;
unsigned int hotToBe;
bool isHot;
bool isActive;
bool wentActive;
int dragX, dragY;
float dragOrig;
int widgetX, widgetY, widgetW;
bool insideCurrentScroll;
unsigned int areaId;
unsigned int widgetId;
};
static GuiState s_state;
inline bool anyActive()
{
return s_state.active != 0;
}
inline bool isActive(unsigned int id)
{
return s_state.active == id;
}
inline bool isHot(unsigned int id)
{
return s_state.hot == id;
}
inline bool inRect(int x, int y, int w, int h, bool checkScroll = true)
{
return (!checkScroll || s_state.insideCurrentScroll) && s_state.mx >= x && s_state.mx <= x + w && s_state.my >= y && s_state.my <= y + h;
}
inline void clearInput()
{
s_state.leftPressed = false;
s_state.leftReleased = false;
s_state.scroll = 0;
}
inline void clearActive()
{
s_state.active = 0;
// mark all UI for this frame as processed
clearInput();
}
inline void setActive(unsigned int id)
{
s_state.active = id;
s_state.wentActive = true;
}
inline void setHot(unsigned int id)
{
s_state.hotToBe = id;
}
static bool buttonLogic(unsigned int id, bool over)
{
bool res = false;
// process down
if (!anyActive())
{
if (over)
setHot(id);
if (isHot(id) && s_state.leftPressed)
setActive(id);
}
// if button is active, then react on left up
if (isActive(id))
{
s_state.isActive = true;
if (over)
setHot(id);
if (s_state.leftReleased)
{
if (isHot(id))
res = true;
clearActive();
}
}
if (isHot(id))
s_state.isHot = true;
return res;
}
static void updateInput(int mx, int my, unsigned char mbut, int scroll)
{
bool left = (mbut & IMGUI_MBUT_LEFT) != 0;
s_state.mx = mx;
s_state.my = my;
s_state.leftPressed = !s_state.left && left;
s_state.leftReleased = s_state.left && !left;
s_state.left = left;
s_state.scroll = scroll;
}
void imguiBeginFrame(int mx, int my, unsigned char mbut, int scroll)
{
updateInput(mx, my, mbut, scroll);
s_state.hot = s_state.hotToBe;
s_state.hotToBe = 0;
s_state.wentActive = false;
s_state.isActive = false;
s_state.isHot = false;
s_state.widgetX = 0;
s_state.widgetY = 0;
s_state.widgetW = 0;
s_state.areaId = 1;
s_state.widgetId = 1;
}
void imguiEndFrame()
{
clearInput();
}
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
static const int BUTTON_HEIGHT = 20;
static const int SLIDER_HEIGHT = 20;
static const int SLIDER_MARKER_WIDTH = 10;
static const int CHECK_SIZE = 8;
static const int DEFAULT_SPACING = 4;
static const int TEXT_HEIGHT = 8;
static const int SCROLL_AREA_PADDING = 6;
static const int INDENT_SIZE = 16;
static const int AREA_HEADER = 28;
static int g_scrollTop = 0;
static int g_scrollBottom = 0;
static int g_scrollRight = 0;
static int g_scrollAreaTop = 0;
static int* g_scrollVal = 0;
static int g_focusTop = 0;
static int g_focusBottom = 0;
static unsigned int g_scrollId = 0;
static bool g_insideScrollArea = false;
bool imguiBeginScrollArea(const char* name, int x, int y, int w, int h, int* scroll)
{
s_state.areaId++;
s_state.widgetId = 0;
g_scrollId = (s_state.areaId << 16) | s_state.widgetId;
s_state.widgetX = x + SCROLL_AREA_PADDING;
s_state.widgetY = y + h - AREA_HEADER + (*scroll);
s_state.widgetW = w - SCROLL_AREA_PADDING * 4;
g_scrollTop = y - AREA_HEADER + h;
g_scrollBottom = y + SCROLL_AREA_PADDING;
g_scrollRight = x + w - SCROLL_AREA_PADDING * 3;
g_scrollVal = scroll;
g_scrollAreaTop = s_state.widgetY;
g_focusTop = y - AREA_HEADER;
g_focusBottom = y - AREA_HEADER + h;
g_insideScrollArea = inRect(x, y, w, h, false);
s_state.insideCurrentScroll = g_insideScrollArea;
AddGfxCmdRoundedRect((float)x, (float)y, (float)w, (float)h, 6, SetRGBA(0, 0, 0, 192));
AddGfxCmdText(x + AREA_HEADER / 2, y + h - AREA_HEADER / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, name, SetRGBA(255, 255, 255, 128));
AddGfxCmdScissor(x + SCROLL_AREA_PADDING, y + SCROLL_AREA_PADDING, w - SCROLL_AREA_PADDING * 4, h - AREA_HEADER - SCROLL_AREA_PADDING);
return g_insideScrollArea;
}
void imguiEndScrollArea()
{
// Disable scissoring.
AddGfxCmdScissor(-1, -1, -1, -1);
// Draw scroll bar
int x = g_scrollRight + SCROLL_AREA_PADDING / 2;
int y = g_scrollBottom;
int w = SCROLL_AREA_PADDING * 2;
int h = g_scrollTop - g_scrollBottom;
int stop = g_scrollAreaTop;
int sbot = s_state.widgetY;
int sh = stop - sbot; // The scrollable area height.
float barHeight = (float)h / (float)sh;
if (barHeight < 1)
{
float barY = (float)(y - sbot) / (float)sh;
if (barY < 0) barY = 0;
if (barY > 1) barY = 1;
// Handle scroll bar logic.
unsigned int hid = g_scrollId;
int hx = x;
int hy = y + (int)(barY*h);
int hw = w;
int hh = (int)(barHeight*h);
const int range = h - (hh - 1);
bool over = inRect(hx, hy, hw, hh);
buttonLogic(hid, over);
if (isActive(hid))
{
float u = (float)(hy - y) / (float)range;
if (s_state.wentActive)
{
s_state.dragY = s_state.my;
s_state.dragOrig = u;
}
if (s_state.dragY != s_state.my)
{
u = s_state.dragOrig + (s_state.my - s_state.dragY) / (float)range;
if (u < 0) u = 0;
if (u > 1) u = 1;
*g_scrollVal = (int)((1 - u) * (sh - h));
}
}
// BG
AddGfxCmdRoundedRect((float)x, (float)y, (float)w, (float)h, (float)w / 2 - 1, SetRGBA(0, 0, 0, 196));
// Bar
if (isActive(hid))
AddGfxCmdRoundedRect((float)hx, (float)hy, (float)hw, (float)hh, (float)w / 2 - 1, SetRGBA(255, 196, 0, 196));
else
AddGfxCmdRoundedRect((float)hx, (float)hy, (float)hw, (float)hh, (float)w / 2 - 1, isHot(hid) ? SetRGBA(255, 196, 0, 96) : SetRGBA(255, 255, 255, 64));
// Handle mouse scrolling.
if (g_insideScrollArea) // && !anyActive())
{
if (s_state.scroll)
{
*g_scrollVal += 20 * s_state.scroll;
if (*g_scrollVal < 0) *g_scrollVal = 0;
if (*g_scrollVal >(sh - h)) *g_scrollVal = (sh - h);
}
}
}
s_state.insideCurrentScroll = false;
}
bool imguiButton(const char* text, bool enabled)
{
s_state.widgetId++;
unsigned int id = (s_state.areaId << 16) | s_state.widgetId;
int x = s_state.widgetX;
int y = s_state.widgetY - BUTTON_HEIGHT;
int w = s_state.widgetW;
int h = BUTTON_HEIGHT;
s_state.widgetY -= BUTTON_HEIGHT + DEFAULT_SPACING;
bool over = enabled && inRect(x, y, w, h);
bool res = buttonLogic(id, over);
AddGfxCmdRoundedRect((float)x, (float)y, (float)w, (float)h, (float)BUTTON_HEIGHT / 2 - 1, SetRGBA(128, 128, 128, isActive(id) ? 196 : 96));
if (enabled)
AddGfxCmdText(x + BUTTON_HEIGHT / 2, y + BUTTON_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, text, isHot(id) ? SetRGBA(255, 196, 0, 255) : SetRGBA(255, 255, 255, 200));
else
AddGfxCmdText(x + BUTTON_HEIGHT / 2, y + BUTTON_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, text, SetRGBA(128, 128, 128, 200));
return res;
}
bool imguiItem(const char* text, bool enabled)
{
s_state.widgetId++;
unsigned int id = (s_state.areaId << 16) | s_state.widgetId;
int x = s_state.widgetX;
int y = s_state.widgetY - BUTTON_HEIGHT;
int w = s_state.widgetW;
int h = BUTTON_HEIGHT;
s_state.widgetY -= BUTTON_HEIGHT + DEFAULT_SPACING;
bool over = enabled && inRect(x, y, w, h);
bool res = buttonLogic(id, over);
if (isHot(id))
AddGfxCmdRoundedRect((float)x, (float)y, (float)w, (float)h, 2.0f, SetRGBA(255, 196, 0, isActive(id) ? 196 : 96));
if (enabled)
AddGfxCmdText(x + BUTTON_HEIGHT / 2, y + BUTTON_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, text, SetRGBA(255, 255, 255, 200));
else
AddGfxCmdText(x + BUTTON_HEIGHT / 2, y + BUTTON_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, text, SetRGBA(128, 128, 128, 200));
return res;
}
bool imguiCheck(const char* text, bool checked, bool enabled)
{
s_state.widgetId++;
unsigned int id = (s_state.areaId << 16) | s_state.widgetId;
int x = s_state.widgetX;
int y = s_state.widgetY - BUTTON_HEIGHT;
int w = s_state.widgetW;
int h = BUTTON_HEIGHT;
s_state.widgetY -= BUTTON_HEIGHT + DEFAULT_SPACING;
bool over = enabled && inRect(x, y, w, h);
bool res = buttonLogic(id, over);
const int cx = x + BUTTON_HEIGHT / 2 - CHECK_SIZE / 2;
const int cy = y + BUTTON_HEIGHT / 2 - CHECK_SIZE / 2;
AddGfxCmdRoundedRect((float)cx - 3, (float)cy - 3, (float)CHECK_SIZE + 6, (float)CHECK_SIZE + 6, 4, SetRGBA(128, 128, 128, isActive(id) ? 196 : 96));
if (checked)
{
if (enabled)
AddGfxCmdRoundedRect((float)cx, (float)cy, (float)CHECK_SIZE, (float)CHECK_SIZE, (float)CHECK_SIZE / 2 - 1, SetRGBA(255, 255, 255, isActive(id) ? 255 : 200));
else
AddGfxCmdRoundedRect((float)cx, (float)cy, (float)CHECK_SIZE, (float)CHECK_SIZE, (float)CHECK_SIZE / 2 - 1, SetRGBA(128, 128, 128, 200));
}
if (enabled)
AddGfxCmdText(x + BUTTON_HEIGHT, y + BUTTON_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, text, isHot(id) ? SetRGBA(255, 196, 0, 255) : SetRGBA(255, 255, 255, 200));
else
AddGfxCmdText(x + BUTTON_HEIGHT, y + BUTTON_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, text, SetRGBA(128, 128, 128, 200));
return res;
}
bool imguiCollapse(const char* text, const char* subtext, bool checked, bool enabled)
{
s_state.widgetId++;
unsigned int id = (s_state.areaId << 16) | s_state.widgetId;
int x = s_state.widgetX;
int y = s_state.widgetY - BUTTON_HEIGHT;
int w = s_state.widgetW;
int h = BUTTON_HEIGHT;
s_state.widgetY -= BUTTON_HEIGHT; // + DEFAULT_SPACING;
const int cx = x + BUTTON_HEIGHT / 2 - CHECK_SIZE / 2;
const int cy = y + BUTTON_HEIGHT / 2 - CHECK_SIZE / 2;
bool over = enabled && inRect(x, y, w, h);
bool res = buttonLogic(id, over);
if (checked)
AddGfxCmdTriangle(cx, cy, CHECK_SIZE, CHECK_SIZE, 2, SetRGBA(255, 255, 255, isActive(id) ? 255 : 200));
else
AddGfxCmdTriangle(cx, cy, CHECK_SIZE, CHECK_SIZE, 1, SetRGBA(255, 255, 255, isActive(id) ? 255 : 200));
if (enabled)
AddGfxCmdText(x + BUTTON_HEIGHT, y + BUTTON_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, text, isHot(id) ? SetRGBA(255, 196, 0, 255) : SetRGBA(255, 255, 255, 200));
else
AddGfxCmdText(x + BUTTON_HEIGHT, y + BUTTON_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, text, SetRGBA(128, 128, 128, 200));
if (subtext)
AddGfxCmdText(x + w - BUTTON_HEIGHT / 2, y + BUTTON_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_RIGHT, subtext, SetRGBA(255, 255, 255, 128));
return res;
}
void imguiLabel(const char* text)
{
int x = s_state.widgetX;
int y = s_state.widgetY - BUTTON_HEIGHT;
s_state.widgetY -= BUTTON_HEIGHT;
AddGfxCmdText(x, y + BUTTON_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, text, SetRGBA(255, 255, 255, 255));
}
void imguiValue(const char* text)
{
const int x = s_state.widgetX;
const int y = s_state.widgetY - BUTTON_HEIGHT;
const int w = s_state.widgetW;
s_state.widgetY -= BUTTON_HEIGHT;
AddGfxCmdText(x + w - BUTTON_HEIGHT / 2, y + BUTTON_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_RIGHT, text, SetRGBA(255, 255, 255, 200));
}
bool imguiSlider(const char* text, float* val, float vmin, float vmax, float vinc, bool enabled)
{
s_state.widgetId++;
unsigned int id = (s_state.areaId << 16) | s_state.widgetId;
int x = s_state.widgetX;
int y = s_state.widgetY - BUTTON_HEIGHT;
int w = s_state.widgetW;
int h = SLIDER_HEIGHT;
s_state.widgetY -= SLIDER_HEIGHT + DEFAULT_SPACING;
AddGfxCmdRoundedRect((float)x, (float)y, (float)w, (float)h, 4.0f, SetRGBA(0, 0, 0, 128));
const int range = w - SLIDER_MARKER_WIDTH;
float u = (*val - vmin) / (vmax - vmin);
if (u < 0) u = 0;
if (u > 1) u = 1;
int m = (int)(u * range);
bool over = enabled && inRect(x + m, y, SLIDER_MARKER_WIDTH, SLIDER_HEIGHT);
bool res = buttonLogic(id, over);
bool valChanged = false;
if (isActive(id))
{
if (s_state.wentActive)
{
s_state.dragX = s_state.mx;
s_state.dragOrig = u;
}
if (s_state.dragX != s_state.mx)
{
u = s_state.dragOrig + (float)(s_state.mx - s_state.dragX) / (float)range;
if (u < 0) u = 0;
if (u > 1) u = 1;
*val = vmin + u*(vmax - vmin);
*val = floorf(*val / vinc + 0.5f)*vinc; // Snap to vinc
m = (int)(u * range);
valChanged = true;
}
}
if (isActive(id))
AddGfxCmdRoundedRect((float)(x + m), (float)y, (float)SLIDER_MARKER_WIDTH, (float)SLIDER_HEIGHT, 4.0f, SetRGBA(255, 255, 255, 255));
else
AddGfxCmdRoundedRect((float)(x + m), (float)y, (float)SLIDER_MARKER_WIDTH, (float)SLIDER_HEIGHT, 4.0f, isHot(id) ? SetRGBA(255, 196, 0, 128) : SetRGBA(255, 255, 255, 64));
// TODO: fix this, take a look at 'nicenum'.
int digits = (int)(ceilf(log10f(vinc)));
char fmt[16];
snprintf(fmt, 16, "%%.%df", digits >= 0 ? 0 : -digits);
char msg[128];
snprintf(msg, 128, fmt, *val);
if (enabled)
{
AddGfxCmdText(x + SLIDER_HEIGHT / 2, y + SLIDER_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, text, isHot(id) ? SetRGBA(255, 196, 0, 255) : SetRGBA(255, 255, 255, 200));
AddGfxCmdText(x + w - SLIDER_HEIGHT / 2, y + SLIDER_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_RIGHT, msg, isHot(id) ? SetRGBA(255, 196, 0, 255) : SetRGBA(255, 255, 255, 200));
}
else
{
AddGfxCmdText(x + SLIDER_HEIGHT / 2, y + SLIDER_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, text, SetRGBA(128, 128, 128, 200));
AddGfxCmdText(x + w - SLIDER_HEIGHT / 2, y + SLIDER_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_RIGHT, msg, SetRGBA(128, 128, 128, 200));
}
return res || valChanged;
}
bool imguiSlider(const char* text, int* val, int vmin, int vmax, int vinc, bool enabled)
{
s_state.widgetId++;
unsigned int id = (s_state.areaId << 16) | s_state.widgetId;
int x = s_state.widgetX;
int y = s_state.widgetY - BUTTON_HEIGHT;
int w = s_state.widgetW;
int h = SLIDER_HEIGHT;
s_state.widgetY -= SLIDER_HEIGHT + DEFAULT_SPACING;
AddGfxCmdRoundedRect((float)x, (float)y, (float)w, (float)h, 4.0f, SetRGBA(0, 0, 0, 128));
const int range = w - SLIDER_MARKER_WIDTH;
float u = (*val - vmin) / float(vmax - vmin);
if (u < 0) u = 0;
if (u > 1) u = 1;
int m = (int)(u * range);
bool over = enabled && inRect(x + m, y, SLIDER_MARKER_WIDTH, SLIDER_HEIGHT);
bool res = buttonLogic(id, over);
bool valChanged = false;
if (isActive(id))
{
if (s_state.wentActive)
{
s_state.dragX = s_state.mx;
s_state.dragOrig = u;
}
if (s_state.dragX != s_state.mx)
{
u = s_state.dragOrig + (float)(s_state.mx - s_state.dragX) / (float)range;
if (u < 0) u = 0;
if (u > 1) u = 1;
*val = int(vmin + u*(vmax - vmin));
*val = int(floorf(*val / float(vinc) + 0.5f))*vinc; // Snap to vinc
m = (int)(u * range);
valChanged = true;
}
}
if (isActive(id))
AddGfxCmdRoundedRect((float)(x + m), (float)y, (float)SLIDER_MARKER_WIDTH, (float)SLIDER_HEIGHT, 4.0f, SetRGBA(255, 255, 255, 255));
else
AddGfxCmdRoundedRect((float)(x + m), (float)y, (float)SLIDER_MARKER_WIDTH, (float)SLIDER_HEIGHT, 4.0f, isHot(id) ? SetRGBA(255, 196, 0, 128) : SetRGBA(255, 255, 255, 64));
char msg[128];
snprintf(msg, 128, "%d", *val);
if (enabled)
{
AddGfxCmdText(x + SLIDER_HEIGHT / 2, y + SLIDER_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, text, isHot(id) ? SetRGBA(255, 196, 0, 255) : SetRGBA(255, 255, 255, 200));
AddGfxCmdText(x + w - SLIDER_HEIGHT / 2, y + SLIDER_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_RIGHT, msg, isHot(id) ? SetRGBA(255, 196, 0, 255) : SetRGBA(255, 255, 255, 200));
}
else
{
AddGfxCmdText(x + SLIDER_HEIGHT / 2, y + SLIDER_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_LEFT, text, SetRGBA(128, 128, 128, 200));
AddGfxCmdText(x + w - SLIDER_HEIGHT / 2, y + SLIDER_HEIGHT / 2 - TEXT_HEIGHT / 2, TEXT_ALIGN_RIGHT, msg, SetRGBA(128, 128, 128, 200));
}
return res || valChanged;
}
void imguiIndent()
{
s_state.widgetX += INDENT_SIZE;
s_state.widgetW -= INDENT_SIZE;
}
void imguiUnindent()
{
s_state.widgetX -= INDENT_SIZE;
s_state.widgetW += INDENT_SIZE;
}
void imguiSeparator()
{
s_state.widgetY -= DEFAULT_SPACING * 3;
}
void imguiSeparatorLine()
{
int x = s_state.widgetX;
int y = s_state.widgetY - DEFAULT_SPACING * 2;
int w = s_state.widgetW;
int h = 1;
s_state.widgetY -= DEFAULT_SPACING * 4;
AddGfxCmdRect((float)x, (float)y, (float)w, (float)h, SetRGBA(255, 255, 255, 32));
}