Create complex_objects.cpp

examples/complex_objects.cpp

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+#include <onidev.h>
+#include <GL/gl.h>
+#include "binpack.h"
+
+struct Object
+{
+    int x, y, wid, hei;
+    unsigned char r, g, b;
+};
+
+int main()
+{
+    od::Window win(512, 512, "OniDev app");
+    win.setSynchronization(true);
+
+    srand(time(0));
+    // Items to binpack
+    std::vector<Object> objects;
+    for(int i=0; i<7; ++i)
+    for(int j=0; j<7; ++j)
+    {
+        unsigned char r = rand()%255;
+        unsigned char g = rand()%255;
+        unsigned char b = rand()%255;
+        objects.push_back( Object{i*60, j*60, 8 + rand()%48, 8 + rand()%48, r, g, b} );
+    }
+
+    // Temporary rectangles for binpacking
+    std::vector<BinPacker::Rect> boxes;
+    for(Object & o: objects)
+    {
+        boxes.push_back( BinPacker::Rect(o.x, o.y, o.wid, o.hei) );
+    }
+
+    PowerOfTwoBinPacker packer(win.width(), win.height());
+
+    // interpolated render
+    std::vector<BinPacker::Rect> temp = boxes;
+    float timer = 0;
+
+    while(win.open())
+    {
+        win.ioHandle();
+
+        if(od::keyPressed(od::vk_escape))
+            break;
+
+        od::drawClear();
+        win.updateView();
+
+        // Binpack
+        if(od::keyPressed(od::vk_enter) && timer == 0.f)
+        {
+            bool ret = packer.process(boxes);
+
+            if(ret == false)
+                return 1;
+
+            timer = 0.001f;
+        }
+
+        if(timer > 0 && timer < 1.f)
+        {
+            timer += 0.015f;
+
+            if(timer >= 1.f)
+            {
+                for(size_t i=0; i<objects.size(); ++i)
+                {
+                    objects[i].x = boxes[i].x;
+                    objects[i].y = boxes[i].y;
+                }
+            }
+            else
+            {
+                for(size_t i=0; i<objects.size(); ++i)
+                {
+                    objects[i].x = temp[i].x * (1.f - timer) + boxes[i].x * timer;
+                    objects[i].y = temp[i].y * (1.f - timer) + boxes[i].y * timer;
+                }
+            }
+        }
+        else if(od::keyPressed(od::vk_space))
+        {
+            timer = 0;
+            for(int i=0; i<7; ++i)
+            for(int j=0; j<7; ++j)
+            {
+                auto & o = objects[i + j*7];
+                o.x = i*60;
+                o.y = j*60;
+                o.wid = 8 + rand()%48;
+                o.hei = 8 + rand()%48;
+                boxes[i + j*7] = BinPacker::Rect(o.x, o.y, o.wid, o.hei);
+            }
+            temp = boxes;
+        }
+
+        for(Object & o: objects)
+        {
+            glColor3ub(o.r, o.g, o.b);
+            od::drawRectangle(o.x, o.y, o.x + o.wid, o.y + o.hei, false);
+            glColor3ub(o.r * 0.4, o.g * 0.4, o.b * 0.4);
+            od::drawRectangle(o.x, o.y, o.x + o.wid, o.y + o.hei, true);
+        }
+
+        if(timer >= 1.f)
+        {
+            glColor3f(0, 0, 0);
+            od::drawRectangle(0, 0, packer.width(), packer.height(), true);
+        }
+
+        win.screenRefresh();
+    }
+
+    return 0;
+}