Renderer.cs
上传用户:gb3593
上传日期:2022-01-07
资源大小:3028k
文件大小:6k
- using System;
- using System.Collections.Generic;
- using System.Text;
- using Tao.OpenGl;
- using Box2D.Net;
- using System.Windows.Forms;
- namespace TestBed.Net
- {
- static class Renderer
- {
- public static void InitOpenGL(System.Drawing.Size WidthHeight, float viewZoom, Vector ViewOffset)
- {
- int Width = WidthHeight.Width;
- int Height = WidthHeight.Height;
- Height = Height > 0 ? Height : 1;
- Gl.glDisable(Gl.GL_CULL_FACE);
- Gl.glClearColor(.5f, .5f, .5f, 1);
- float AspectRatio = (float)Width / (float)Height;
- Gl.glViewport(0, 0, Width, Height);
- Gl.glMatrixMode(Gl.GL_PROJECTION);
-
- Gl.glLoadIdentity();
- Glu.gluOrtho2D(-AspectRatio, AspectRatio, -1, 1);
-
- Gl.glMatrixMode(Gl.GL_MODELVIEW);
- }
- public static void OpenGLDraw(Test test)
- {
- Gl.glClear(Gl.GL_COLOR_BUFFER_BIT);
- Gl.glMatrixMode(Gl.GL_MODELVIEW);
- Gl.glLoadIdentity();
-
- Gl.glScalef(1.0f / test.Zoom, 1.0f / test.Zoom, 1.0f / test.Zoom);
- Gl.glTranslatef(-test.ViewOffset.X, -test.ViewOffset.Y, 0);
- Gl.glPushMatrix();
- DrawBodies(test.world.Bodies);
- DrawJoints(test.world.Joints);
- Gl.glPopMatrix();
- }
- public static void DrawJoints(IList<Joint> joints)
- {
- foreach (Joint joint in joints)
- {
- DrawJoint(joint, System.Drawing.Color.LawnGreen);
- }
- }
- public static void DrawBodies(IList<Body> bodies)
- {
- foreach(Body body in bodies)
- foreach (Shape shape in body.Shapes)
- {
- System.Drawing.Color color = System.Drawing.Color.White;
- if (body.Static)
- color = System.Drawing.Color.LightGreen; //Color(0.5f, 0.9f, 0.5f)
- else if (body.Sleeping)
- color = System.Drawing.Color.LightBlue;
- //else if(body == bomb)
- DrawShape(body.GetXForm(), shape, System.Drawing.Color.White);
- }
- }
- public static void DrawShape(XForm xform, Shape shape, System.Drawing.Color c)
- {
- switch (shape.ShapeType)
- {
- case ShapeType.e_circleShape:
- {
- Vector x = xform.Position;
- float r = (new CircleShape(shape)).Radius;
- float segments = 16;
- double increment = 2 * Math.PI / segments;
- Gl.glColor3ub(c.R, c.G, c.B);
- Gl.glBegin(Gl.GL_LINE_LOOP);
-
- for (double i = 0, theta = 0; i < segments; ++i, theta += increment)
- {
- Vector d = new Vector(r * (float)Math.Cos(theta), r * (float)Math.Sin(theta));
- Vector v = x + d;
- Gl.glVertex2f(v.X, v.Y);
- }
- Gl.glEnd();
- //Draw a line from the circle's center to it's right side
- //so we can visually inspect rotations.
- Gl.glBegin(Gl.GL_LINES);
- Gl.glVertex2f(x.X, x.Y);
- Vector ax = xform.Rotation.col1;
- Gl.glVertex2f(x.X + r * ax.X, x.Y + r * ax.Y);
- Gl.glEnd();
- }
- break;
- case ShapeType.e_polygonShape:
- {
- Gl.glColor3ub(c.R, c.G, c.B);
- Gl.glBegin(Gl.GL_LINE_LOOP);
- foreach (Vector vertex in (new PolyShape(shape)).Vertices)
- {
- Vector vertprime = xform.Rotation * vertex + xform.Position;
- Gl.glVertex2f(vertprime.X, vertprime.Y);
- }
- Gl.glEnd();
- }
- break;
- }
- }
- public static void DrawAABB(AABB aabb, System.Drawing.Color c)
- {
- Gl.glColor3b(c.R, c.G, c.B);
- Gl.glBegin(Gl.GL_LINE_LOOP);
- Gl.glVertex2f(aabb.lowerBound.X, aabb.lowerBound.Y);
- Gl.glVertex2f(aabb.upperBound.X, aabb.lowerBound.Y);
- Gl.glVertex2f(aabb.upperBound.X, aabb.upperBound.Y);
- Gl.glVertex2f(aabb.lowerBound.X, aabb.upperBound.Y);
- Gl.glEnd();
- }
- public static void DrawJoint(Joint joint, System.Drawing.Color color)
- {
- Body b1 = joint.Body1;
- Body b2 = joint.Body2;
- Vector x1 = b1.GetXForm().Position;
- Vector x2 = b2.GetXForm().Position;
- Vector p1 = joint.Anchor2;
- Vector p2 = joint.Anchor1;
- Gl.glColor3ub(color.R, color.G, color.B);
- Gl.glBegin(Gl.GL_LINES);
- switch (joint.JointType)
- {
- case JointType.e_mouseJoint:
- case JointType.e_distanceJoint:
- Gl.glVertex2f(p1.X, p1.Y);
- Gl.glVertex2f(p2.X, p2.Y);
- break;
- /*
- * case JointType.e_pulleyJoint:
- {
- b2PulleyJoint* pulley = (b2PulleyJoint*)joint;
- b2Vec2 s1 = pulley->GetGroundPoint1();
- b2Vec2 s2 = pulley->GetGroundPoint2();
- glVertex2f(s1.x, s1.y);
- glVertex2f(p1.x, p1.y);
- glVertex2f(s2.x, s2.y);
- glVertex2f(p2.x, p2.y);
- }
- break;
- */
- default:
- Gl.glVertex2f(x1.X, x1.Y);
- Gl.glVertex2f(p1.X, p1.Y);
- Gl.glVertex2f(x2.X, x2.Y);
- Gl.glVertex2f(p2.X, p2.Y);
- break;
- }
- Gl.glEnd();
- }
- }
- }