Differences

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--- public:t-vien-12-1:lab_7_materials [2012/02/22 11:22] – hannes
+++ public:t-vien-12-1:lab_7_materials [2024/04/29 13:33] (current) – external edit 127.0.0.1
@@ Line 38: / Line 38: @@
     - The projector is correctly set up here, but there are a few things you still need to do to make this work. First of all, you have to create the texture that you want to project on the floor. Here we call it **wall_tanned_door_light.tif**. What should this texture look like? Study the screen shot above and try to understand what kind of texture you need. Then start with a copy of **wall_tanned_door.tif** and change it into the right texture for the light pattern. Try it out.
     - You may notice that the texture doesn't blend with the floor texture. You need to set the blending parameter for the texture stage for that to happen, using the method **   setMode(<blend mode>)** method on the texture stage. Try figuring out what blend mode you need to use for this to come out right.
+  - ** Crating particles **\\ Add the following code to the **create_particles** funtion to get a particle generator installed:<code python>
+        base.enableParticles()
+        self.p = ParticleEffect()
+        self.p.loadConfig(Filename("ar.ptf"))
+        self.p.start(self.parent)
+        self.p.setPos(1.6,-0.7,0.0)
+        self.p.setHpr(0,-45,0) </code> This already comes with a small particle system called "ar.ptf", make sure you see those particles in your scene. Then see if you can create a new particle system using the Panda 3D Particle Panel (it's under Samples/Particles) and insert that system instead. Can you make something that looks and behaves like flies?
+  - ** Creating a bloom effect **\\ The following code may not work on all graphics cards, since they have to support programmable shaders. You should get warning messages on the console about this as well as not seeing the actual effect. Try adding the following code to the **create_bloom** function:<code python>
+        render.setShaderAuto()
+        self.filters = CommonFilters(base.win, base.cam)
+        self.filters.setBloom(size="large")</code> You can play with the "size" value, which can also be "small" and "medium". Experiment with other filters as well, such as blur. You can look up all the common filters on the [[http://www.panda3d.org/manual/index.php/Common_Image_Filters|Common Image Filters]] page in the manual.