root / trunk / Linux / addons / ofxNCore / src / Controls / ofxGuiPoints.cpp @ 59
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| 1 | /*
|
|---|---|
| 2 | * ofxGuiPoints.cpp |
| 3 | * openFrameworks |
| 4 | * |
| 5 | * Created by Stefan Kirch on 18.06.08. |
| 6 | * Copyright 2008 alphakanal. All rights reserved. |
| 7 | * |
| 8 | */ |
| 9 | |
| 10 | // ----------------------------------------------------------------------------------------------------
|
| 11 | |
| 12 | #include "ofxGuiPoints.h" |
| 13 | |
| 14 | // ----------------------------------------------------------------------------------------------------
|
| 15 | |
| 16 | ofxGuiPoints::ofxGuiPoints() |
| 17 | {
|
| 18 | mParamType = kofxGui_Object_Points; |
| 19 | } |
| 20 | |
| 21 | // ----------------------------------------------------------------------------------------------------
|
| 22 | |
| 23 | void ofxGuiPoints::init(int id, string name, int x, int y, int width, int height, ofxPoint2f min, ofxPoint2f max, ofxPoint2f value, int display, int steps) |
| 24 | {
|
| 25 | int textHeight = (name == "") ? 0 : mGlobals->mParamFontHeight; |
| 26 | |
| 27 | mParamId = id; |
| 28 | mParamName = name; |
| 29 | |
| 30 | mObjX = x; |
| 31 | mObjY = y; |
| 32 | |
| 33 | mObjWidth = width; |
| 34 | mObjHeight = textHeight + height; |
| 35 | |
| 36 | mDisplay = display; |
| 37 | mSteps = steps; |
| 38 | |
| 39 | setRange(min, max); |
| 40 | setValue(value); |
| 41 | setControlRegion(0, textHeight, width, height);
|
| 42 | |
| 43 | mList.points.push_back(ofxPoint2f(mMinVal.x, mMinVal.y + mValDlt.y * 0.5)); |
| 44 | mList.points.push_back(ofxPoint2f(mMaxVal.x, mMinVal.y + mValDlt.y * 0.5)); |
| 45 | |
| 46 | float size = mGlobals->mPointSize / 2.0; |
| 47 | float x1 = size / mCtrWidth;
|
| 48 | float y1 = size / mCtrHeight;
|
| 49 | float x2 = x1 * mValDlt.x;
|
| 50 | float y2 = y1 * mValDlt.y;
|
| 51 | |
| 52 | mDistance = sqrt(x2 * x2 + y2 * y2); |
| 53 | } |
| 54 | |
| 55 | // ----------------------------------------------------------------------------------------------------
|
| 56 | |
| 57 | void ofxGuiPoints::setValue(ofxPoint2f value)
|
| 58 | {
|
| 59 | mValue = value; |
| 60 | } |
| 61 | |
| 62 | // ----------------------------------------------------------------------------------------------------
|
| 63 | |
| 64 | void ofxGuiPoints::setRange(ofxPoint2f min, ofxPoint2f max)
|
| 65 | {
|
| 66 | mMinVal = min; |
| 67 | mMaxVal = max; |
| 68 | mValDlt = mMaxVal / mMinVal; |
| 69 | } |
| 70 | |
| 71 | // ----------------------------------------------------------------------------------------------------
|
| 72 | |
| 73 | bool ofxGuiPoints::update(int id, int task, void* data, int length) |
| 74 | {
|
| 75 | bool handled = false; |
| 76 | ofxPoint2f value = mValue; |
| 77 | |
| 78 | if(id == mParamId)
|
| 79 | {
|
| 80 | if(task == kofxGui_Set_Float)
|
| 81 | setValue(ofxPoint2f(mMinVal.x + CLAMP(*(float*)data, 0.0, 1.0) * mValDlt.x, mValue.y)); |
| 82 | else if(task == kofxGui_Set_Point) |
| 83 | setValue(*(ofxPoint2f*)data); |
| 84 | |
| 85 | handled = true;
|
| 86 | } |
| 87 | |
| 88 | if(value!= mValue)
|
| 89 | {
|
| 90 | mOutVal = mList.positionToValue(mValue); |
| 91 | mGlobals->mListener->handleGui(mParamId, kofxGui_Set_Point, &mOutVal, sizeof(ofxPoint2f));
|
| 92 | } |
| 93 | |
| 94 | return handled;
|
| 95 | } |
| 96 | |
| 97 | // ----------------------------------------------------------------------------------------------------
|
| 98 | |
| 99 | void ofxGuiPoints::draw()
|
| 100 | {
|
| 101 | glPushMatrix(); |
| 102 | |
| 103 | glTranslatef(mObjX, mObjY, 0.0f); |
| 104 | |
| 105 | if(mParamName != "") |
| 106 | drawParamString(0.0, 0.0, mParamName + ": " + pointToString(mList.activePoint != -1 ? mOutVal : mValue, mDisplay), false); |
| 107 | |
| 108 | ofxPoint2f p = fractionToLocal(valueToFraction(mValue)); |
| 109 | |
| 110 | float x = mCtrWidth * p.x;
|
| 111 | float y = mCtrHeight * p.y;
|
| 112 | |
| 113 | float d = mGlobals->mPointSize;
|
| 114 | float r = d / 2.0; |
| 115 | |
| 116 | ofFill(); |
| 117 | |
| 118 | // background
|
| 119 | glColor4f(mGlobals->mCoverColor.r, mGlobals->mCoverColor.g, mGlobals->mCoverColor.b, mGlobals->mCoverColor.a); |
| 120 | ofRect(mCtrX, mCtrY, mCtrWidth, mCtrHeight); |
| 121 | |
| 122 | ofNoFill(); |
| 123 | |
| 124 | // lines
|
| 125 | glColor4f(mGlobals->mCurveColor.r, mGlobals->mCurveColor.g, mGlobals->mCurveColor.b, mGlobals->mCurveColor.a); |
| 126 | |
| 127 | ofBeginShape(); |
| 128 | for(int i = 0; i < mList.points.size(); i++) |
| 129 | {
|
| 130 | ofxPoint2f p = fractionToLocal(valueToFraction(mList.points.at(i))); |
| 131 | ofVertex(p.x, p.y); |
| 132 | } |
| 133 | ofEndShape(false);
|
| 134 | |
| 135 | // x-bar
|
| 136 | glColor4f(mGlobals->mAxisColor.r, mGlobals->mAxisColor.g, mGlobals->mAxisColor.b, mGlobals->mAxisColor.a); |
| 137 | ofLine(p.x + 0.5, mCtrY, p.x + 0.5, mCtrBottom); |
| 138 | |
| 139 | if(mList.activePoint != -1) |
| 140 | {
|
| 141 | // y-bar
|
| 142 | glColor4f(mGlobals->mAxisColor.r, mGlobals->mAxisColor.g, mGlobals->mAxisColor.b,mGlobals->mAxisColor.a); |
| 143 | ofLine(mCtrX, p.y + 0.5, mCtrRight, p.y + 0.5); |
| 144 | } |
| 145 | |
| 146 | // handles
|
| 147 | for(int i = 0; i < mList.points.size(); i++) |
| 148 | {
|
| 149 | glColor4f(mGlobals->mHandleColor.r, mGlobals->mHandleColor.g, mGlobals->mHandleColor.b, mGlobals->mHandleColor.a); |
| 150 | |
| 151 | ofxPoint2f p = fractionToLocal(valueToFraction(mList.points.at(i))); |
| 152 | ofRect(p.x - r, p.y - r, d, d); |
| 153 | } |
| 154 | |
| 155 | // frame
|
| 156 | glColor4f(mGlobals->mFrameColor.r, mGlobals->mFrameColor.g, mGlobals->mFrameColor.b, mGlobals->mFrameColor.a); |
| 157 | ofRect(mCtrX, mCtrY, mCtrWidth, mCtrHeight); |
| 158 | |
| 159 | glPopMatrix(); |
| 160 | } |
| 161 | |
| 162 | // ----------------------------------------------------------------------------------------------------
|
| 163 | |
| 164 | bool ofxGuiPoints::mouseDragged(int x, int y, int button) |
| 165 | {
|
| 166 | if(mMouseIsDown)
|
| 167 | {
|
| 168 | ofxPoint2f value = mValue; |
| 169 | ofxPoint2f point = fractionToValue(mouseToFraction(mouseToLocal(x, y))); |
| 170 | |
| 171 | if(mList.activePoint > -1) |
| 172 | {
|
| 173 | if(mList.activePoint == 0) |
| 174 | {
|
| 175 | point.x = mMinVal.x; |
| 176 | mList.points[mList.activePoint] = point; |
| 177 | } |
| 178 | else if(mList.activePoint == mList.points.size() - 1) |
| 179 | {
|
| 180 | point.x = mMaxVal.x; |
| 181 | mList.points[mList.activePoint] = point; |
| 182 | } |
| 183 | else
|
| 184 | {
|
| 185 | if(point.x < mList.points[mList.activePoint - 1].x) |
| 186 | point.x = mList.points[mList.activePoint - 1].x;
|
| 187 | else if(point.x > mList.points[mList.activePoint + 1].x) |
| 188 | point.x = mList.points[mList.activePoint + 1].x;
|
| 189 | |
| 190 | mList.points[mList.activePoint] = point; |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | setValue(point); |
| 195 | |
| 196 | if(value != mValue)
|
| 197 | {
|
| 198 | mOutVal = mList.positionToValue(point); |
| 199 | mGlobals->mListener->handleGui(mParamId, kofxGui_Set_Point, &mOutVal, sizeof(ofxPoint2f));
|
| 200 | } |
| 201 | } |
| 202 | |
| 203 | return mMouseIsDown;
|
| 204 | } |
| 205 | |
| 206 | // ----------------------------------------------------------------------------------------------------
|
| 207 | |
| 208 | bool ofxGuiPoints::mousePressed(int x, int y, int button) |
| 209 | {
|
| 210 | ofxPoint2f point = mouseToLocal(x, y); |
| 211 | |
| 212 | if(isPointInsideMe(point))
|
| 213 | {
|
| 214 | ofxPoint2f inside = fractionToValue(mouseToFraction(point)); |
| 215 | bool onPoint = isPointWithinDistance(inside);
|
| 216 | |
| 217 | if(button == 2) |
| 218 | {
|
| 219 | if(onPoint)
|
| 220 | mList.deleteActivePoint(); |
| 221 | else
|
| 222 | mList.addPointAtPosition(inside); |
| 223 | } |
| 224 | |
| 225 | mMouseIsDown = true;
|
| 226 | mouseDragged(x, y, button); |
| 227 | } |
| 228 | else
|
| 229 | {
|
| 230 | mMouseIsDown = false;
|
| 231 | } |
| 232 | |
| 233 | return mMouseIsDown;
|
| 234 | } |
| 235 | |
| 236 | // ----------------------------------------------------------------------------------------------------
|
| 237 | |
| 238 | bool ofxGuiPoints::mouseReleased(int x, int y, int button) |
| 239 | {
|
| 240 | bool handled = mMouseIsDown;
|
| 241 | |
| 242 | if(mMouseIsDown)
|
| 243 | {
|
| 244 | mMouseIsDown = false;
|
| 245 | mList.activePoint = -1;
|
| 246 | } |
| 247 | |
| 248 | return handled;
|
| 249 | } |
| 250 | |
| 251 | // ----------------------------------------------------------------------------------------------------
|
| 252 | |
| 253 | void ofxGuiPoints::buildFromXml()
|
| 254 | {
|
| 255 | int numberOfTags = mGlobals->mXml.getNumTags("POINT"); |
| 256 | |
| 257 | if(numberOfTags > 0) |
| 258 | {
|
| 259 | mList.points.clear(); |
| 260 | |
| 261 | for(int i = 0; i < numberOfTags; i++) |
| 262 | {
|
| 263 | mGlobals->mXml.pushTag("POINT", i);
|
| 264 | |
| 265 | float x = mGlobals->mXml.getValue("X", 0.0); |
| 266 | float y = mGlobals->mXml.getValue("Y", 0.0); |
| 267 | |
| 268 | mList.points.push_back(ofxPoint2f(x, y)); |
| 269 | |
| 270 | mGlobals->mXml.popTag(); |
| 271 | } |
| 272 | } |
| 273 | |
| 274 | mOutVal = mList.positionToValue(mValue); |
| 275 | mGlobals->mListener->handleGui(mParamId, kofxGui_Set_Point, &mOutVal, sizeof(ofxPoint2f));
|
| 276 | } |
| 277 | |
| 278 | // ----------------------------------------------------------------------------------------------------
|
| 279 | |
| 280 | void ofxGuiPoints::saveToXml()
|
| 281 | {
|
| 282 | int id = saveObjectData();
|
| 283 | |
| 284 | mGlobals->mXml.setValue("OBJECT:MIN_X", mMinVal.x, id);
|
| 285 | mGlobals->mXml.setValue("OBJECT:MIN_Y", mMinVal.y, id);
|
| 286 | mGlobals->mXml.setValue("OBJECT:MAX_X", mMaxVal.x, id);
|
| 287 | mGlobals->mXml.setValue("OBJECT:MAX_Y", mMaxVal.y, id);
|
| 288 | mGlobals->mXml.setValue("OBJECT:VALUE_X", mValue.x, id);
|
| 289 | mGlobals->mXml.setValue("OBJECT:VALUE_Y", mValue.y, id);
|
| 290 | |
| 291 | mGlobals->mXml.pushTag("OBJECT", id);
|
| 292 | |
| 293 | for(int i = 0; i < mList.points.size(); i++) |
| 294 | {
|
| 295 | ofxPoint2f p = mList.points.at(i); |
| 296 | |
| 297 | id = mGlobals->mXml.addTag("POINT");
|
| 298 | |
| 299 | mGlobals->mXml.setValue("POINT:X", p.x, id);
|
| 300 | mGlobals->mXml.setValue("POINT:Y", p.y, id);
|
| 301 | } |
| 302 | |
| 303 | mGlobals->mXml.popTag(); |
| 304 | } |
| 305 | |
| 306 | // ----------------------------------------------------------------------------------------------------
|
| 307 | |
| 308 | ofxPoint2f ofxGuiPoints::valueToFraction(ofxPoint2f value) |
| 309 | {
|
| 310 | return ofxPoint2f((value.x - mMinVal.x) / mValDlt.x, (value.y - mMinVal.y) / mValDlt.y);
|
| 311 | } |
| 312 | |
| 313 | // ----------------------------------------------------------------------------------------------------
|
| 314 | |
| 315 | ofxPoint2f ofxGuiPoints::fractionToValue(ofxPoint2f fraction) |
| 316 | {
|
| 317 | return ofxPoint2f((mValDlt.x * fraction.x) + mMinVal.x, (mValDlt.y * fraction.y) + mMinVal.y);
|
| 318 | } |
| 319 | |
| 320 | // ----------------------------------------------------------------------------------------------------
|
| 321 | |
| 322 | bool ofxGuiPoints::isPointWithinDistance(ofxPoint2f position)
|
| 323 | {
|
| 324 | mList.activePoint = -1;
|
| 325 | |
| 326 | for(int i = 0; i < mList.points.size(); i++) |
| 327 | {
|
| 328 | ofxPoint2f point = mList.points.at(i); |
| 329 | float delta = point.distance(position);
|
| 330 | |
| 331 | if(delta < mDistance)
|
| 332 | {
|
| 333 | mList.activePoint = i; |
| 334 | break;
|
| 335 | } |
| 336 | } |
| 337 | |
| 338 | return mList.activePoint != -1; |
| 339 | } |
