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.examples
git-svn-id: svn://ultimatepp.org/upp/trunk@15929 f0d560ea-af0d-0410-9eb7-867de7ffcac7
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parent
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f07d121833
1 changed files with 103 additions and 97 deletions
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@ -32,17 +32,17 @@ struct QueryCallback : b2QueryCallback
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b2Fixture* fixture;
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};
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struct DebugDraw : b2DebugDraw
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struct DebugDraw : b2Draw
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{
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Draw* w;
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Sizef sz;
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float cx, cy;
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float aspect;
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float zoom;
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DebugDraw()
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{}
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void Init(Draw& d, Size s)
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{
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w = &d;
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@ -53,7 +53,7 @@ struct DebugDraw : b2DebugDraw
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aspect = float(sz.cx / sz.cy);
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aspect *= zoom;
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}
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Point conv(const b2Vec2& v)
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{
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return Point(int(v.x * aspect + cx), int(cy - v.y * aspect));
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@ -65,84 +65,86 @@ struct DebugDraw : b2DebugDraw
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v.x = (p.x - cx) / aspect;
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v.y = (cy - p.y) / aspect;
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return v;
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}
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Color conv(const b2Color& c, double f = 255.0)
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{
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return Color(int(c.r * f), int(c.g * f), int(c.b * f));
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}
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void DrawPolygon(const b2Vec2* v, int vertexCount, const b2Color& color)
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}
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virtual void DrawPolygon(const b2Vec2* v, int32 vertexCount, const b2Color& color)
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{
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Vector<Point> p;
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p.SetCount(vertexCount + 1);
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for(int i = 0; i < vertexCount; ++i)
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p[i] = conv(v[i]);
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p[vertexCount] = p[0];
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w->DrawPolyline(p, 1, conv(color, 150.0));
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}
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void DrawSolidPolygon(const b2Vec2* v, int vertexCount, const b2Color& color)
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virtual void DrawSolidPolygon(const b2Vec2* v, int32 vertexCount, const b2Color& color)
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{
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Vector<Point> p;
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p.SetCount(vertexCount);
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for(int i = 0; i < vertexCount; ++i)
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p[i] = conv(v[i]);
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w->DrawPolygon(p, conv(color, 255.0), 1, conv(color, 150));
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w->DrawPolygon(p, conv(color, 255.0), 1, conv(color, 150));
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}
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void DrawCircle(const b2Vec2& center, float32 radius, const b2Color& color)
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virtual void DrawCircle(const b2Vec2& center, float radius, const b2Color& color)
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{
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int r = int(aspect * radius * 2.0f);
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// int r = int(radius * 2.0f);
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Point p = conv(b2Vec2(center.x - radius, center.y + radius));
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w->DrawEllipse(p.x, p.y, r, r, conv(color, 150.0));
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}
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void DrawSolidCircle(const b2Vec2& center, float32 radius, const b2Vec2& axis, const b2Color& color)
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virtual void DrawSolidCircle(const b2Vec2& center, float radius, const b2Vec2& axis, const b2Color& color)
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{
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int r = int(aspect * radius * 2.0f);
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Point p = conv(b2Vec2(center.x - radius, center.y + radius));
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w->DrawEllipse(p.x, p.y, r, r, conv(color, 255.0), PEN_SOLID, conv(color, 150.0));
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}
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void DrawSegment(const b2Vec2& p1, const b2Vec2& p2, const b2Color& color)
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virtual void DrawSegment(const b2Vec2& p1, const b2Vec2& p2, const b2Color& color)
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{
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w->DrawLine(conv(p1), conv(p2), 1, conv(color, 150.0));
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}
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void DrawTransform(const b2Transform& xf)
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virtual void DrawTransform(const b2Transform& xf)
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{
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}
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void DrawPoint(const b2Vec2& p0, float32 size, const b2Color& color)
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virtual void DrawPoint(const b2Vec2& p0, float size, const b2Color& color)
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{
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Point p = conv(p0);
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int s = int(size * aspect);
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// int s = int(size * aspect);
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int s = int(size);
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w->DrawRect(p.x, p.y, s, s, conv(color, 255.0));
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}
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void DrawString(int x, int y, const char* string, ...)
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{
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char buffer[256];
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va_list arg;
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va_start(arg, string);
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vsprintf(buffer, string, arg);
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va_end(arg);
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w->DrawText(x, y, buffer);
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}
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void DrawAABB(b2AABB* aabb, const b2Color& color)
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{
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Point lb = conv(aabb->lowerBound);
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Point ub = conv(aabb->upperBound);
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Color fg = conv(color, 150.0);
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w->DrawRect(lb.x, lb.y, ub.x, ub.y, fg);
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}
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};
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@ -156,14 +158,13 @@ struct App : TopWindow
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Option showBoxes;
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DropList drawMode;
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DebugDraw debugDraw;
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typedef App CLASSNAME;
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App() : world(b2Vec2(0.0, -10.0), true)
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App() : world(b2Vec2(0.0, -10.0))
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{
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Title("Box2D Example");
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SetRectX(0, 640);
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SetRectY(0, 480);
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SetRect(0, 0, Zx(640), Zy(480));
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Sizeable().Zoomable();
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BackPaint();
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SetTimeCallback(-1, THISBACK(Render));
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@ -175,61 +176,66 @@ struct App : TopWindow
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b2BodyDef bodyDef;
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groundBody = world.CreateBody(&bodyDef);
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showBoxes.SetLabel("AABBs");
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drawMode
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.Add(0, "Draw")
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.Add(1, "Painter - No aa")
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.Add(2, "Painter - Antialiased")
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.Add(3, "Painter - Subpixel");
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drawMode <<= 2;
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Add(showBoxes.LeftPosZ(5, 55).TopPosZ(5, 19));
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Add(drawMode.LeftPosZ(5, 130).TopPosZ(28, 19));
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Bridge();
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}
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void Bridge()
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{
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const int ecount = 30;
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b2BodyDef bd;
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b2Body* ground = world.CreateBody(&bd);
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b2PolygonShape shape;
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shape.SetAsEdge(b2Vec2(-40.0f, 0.0f), b2Vec2(40.0f, 0.0f));
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ground->CreateFixture(&shape, 0.0f);
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shape.SetAsBox(0.5f, 0.125f);
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b2FixtureDef fd;
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fd.shape = &shape;
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fd.density = 20.0f;
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fd.friction = 0.2f;
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b2RevoluteJointDef jd;
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b2Body* prevBody = ground;
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for(int i = 0; i < ecount; ++i)
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const int e_count = 30;
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b2Body* ground = NULL;
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{
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b2BodyDef bd;
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bd.type = b2_dynamicBody;
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bd.position.Set(-14.5f + 1.0f * i, 5.0f);
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b2Body* body = world.CreateBody(&bd);
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body->CreateFixture(&fd);
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ground = world.CreateBody(&bd);
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b2Vec2 anchor(-15.0f + 1.0f * i, 5.0f);
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jd.Initialize(prevBody, body, anchor);
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world.CreateJoint(&jd);
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prevBody = body;
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b2EdgeShape shape;
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shape.SetTwoSided(b2Vec2(-40.0f, 0.0f), b2Vec2(40.0f, 0.0f));
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ground->CreateFixture(&shape, 0.0f);
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}
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b2Vec2 anchor(-15.0f + 1.0f * ecount, 5.0f);
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jd.Initialize(prevBody, ground, anchor);
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world.CreateJoint(&jd);
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{
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b2PolygonShape shape;
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shape.SetAsBox(0.5f, 0.125f);
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for(int i = 0; i < 2; ++i)
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b2FixtureDef fd;
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fd.shape = &shape;
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fd.density = 20.0f;
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fd.friction = 0.2f;
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b2RevoluteJointDef jd;
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b2Body* prevBody = ground;
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for (int32 i = 0; i < e_count; ++i)
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{
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b2BodyDef bd;
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bd.type = b2_dynamicBody;
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bd.position.Set(-14.5f + 1.0f * i, 5.0f);
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b2Body* body = world.CreateBody(&bd);
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body->CreateFixture(&fd);
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b2Vec2 anchor(-15.0f + 1.0f * i, 5.0f);
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jd.Initialize(prevBody, body, anchor);
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world.CreateJoint(&jd);
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prevBody = body;
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}
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b2Vec2 anchor(-15.0f + 1.0f * e_count, 5.0f);
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jd.Initialize(prevBody, ground, anchor);
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world.CreateJoint(&jd);
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}
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for (int32 i = 0; i < 2; ++i)
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{
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b2Vec2 vertices[3];
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vertices[0].Set(-0.5f, 0.0f);
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@ -250,7 +256,7 @@ struct App : TopWindow
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body->CreateFixture(&fd);
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}
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for(int i = 0; i < 3; ++i)
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for (int32 i = 0; i < 3; ++i)
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{
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b2CircleShape shape;
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shape.m_radius = 0.5f;
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@ -264,11 +270,11 @@ struct App : TopWindow
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bd.position.Set(-6.0f + 6.0f * i, 10.0f);
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b2Body* body = world.CreateBody(&bd);
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body->CreateFixture(&fd);
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}
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}
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}
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void Render() { Refresh(); }
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virtual void Paint(Draw& w)
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{
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int m = ~drawMode;
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@ -277,17 +283,17 @@ struct App : TopWindow
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int velocityIterations = 8;
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int positionIterations = 10;
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float32 timeStep = 1.0f / hz;
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int flags = b2DebugDraw::e_shapeBit | b2DebugDraw::e_jointBit;
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float timeStep = 1.0f / hz;
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int flags = b2Draw::e_shapeBit | b2Draw::e_jointBit;
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if(showBoxes)
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flags |= b2DebugDraw::e_aabbBit;
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flags |= b2Draw::e_aabbBit;
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debugDraw.SetFlags(flags);
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world.SetWarmStarting(1);
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world.SetContinuousPhysics(1);
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world.Step(timeStep, velocityIterations, positionIterations);
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world.SetContinuousPhysics(1);
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world.Step(timeStep, velocityIterations, positionIterations);
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Point p1, p2;
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if(mouseJoint)
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@ -297,7 +303,7 @@ struct App : TopWindow
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}
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Size sz = GetSize();
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if(m > 0)
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{
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ImageBuffer ib(sz);
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@ -306,21 +312,21 @@ struct App : TopWindow
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bg.r = bg.g = bg.b = bg.a = 255;
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bp.Clear(bg);
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debugDraw.Init(bp, sz);
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world.DrawDebugData();
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world.DebugDraw();
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if(mouseJoint)
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{
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bp.DrawLine(p1, p2, 2, LtGreen);
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bp.DrawEllipse(p2.x - 3, p2.y - 3, 6, 6, Green, PEN_SOLID, Black);
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}
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w.DrawImage(0, 0, ib);
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}
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else
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{
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w.DrawRect(sz, White);
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debugDraw.Init(w, sz);
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world.DrawDebugData();
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world.DebugDraw();
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if(mouseJoint)
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{
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w.DrawLine(p1, p2, 2, LtGreen);
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@ -328,24 +334,24 @@ struct App : TopWindow
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}
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}
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}
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virtual void LeftDown(Point p0, dword keyflags)
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{
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b2Vec2 p = debugDraw.conv(p0);
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mouseWorld = p;
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if(mouseJoint != NULL)
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return;
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b2AABB aabb;
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b2Vec2 d;
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d.Set(0.001f, 0.001f);
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aabb.lowerBound = p - d;
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aabb.upperBound = p + d;
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QueryCallback callback(p);
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world.QueryAABB(&callback, aabb);
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if (callback.fixture)
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{
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b2Body* body = callback.fixture->GetBody();
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@ -356,7 +362,7 @@ struct App : TopWindow
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md.maxForce = 1000.0f * body->GetMass();
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mouseJoint = (b2MouseJoint*) world.CreateJoint(&md);
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body->SetAwake(true);
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}
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}
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}
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virtual void LeftUp(Point p0, dword keyflags)
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@ -365,17 +371,17 @@ struct App : TopWindow
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{
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world.DestroyJoint(mouseJoint);
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mouseJoint = NULL;
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}
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}
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}
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virtual void MouseMove(Point p, dword keyflags)
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{
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mouseWorld = debugDraw.conv(p);
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if(mouseJoint)
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mouseJoint->SetTarget(mouseWorld);
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}
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virtual void MouseWheel(Point p, int zdelta, dword keyflags)
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{
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debugDraw.zoom += zdelta / 80.0f;
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