I have an orthographic camera in my game that scales things and objects automatically. I don't want it to scale things up. How can I cancel this?
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I am creating a 3d text on blender2.8 but I am having a hard time trying to make it appear on the camera view.
I have tried rotating and scaling the camera but it doesn't help.
The camera object is the focal point for the final image, like in real life, if you want to get more in the picture you need to move the camera back or zoom out.
With the camera close -
With the camera far away -
To zoom out, you reduce the camera's focal length.
I am using Three.JS to create a scene.
I want to be able to set my camera in the corner of a room and have the viewer rotate the camera around on the spot, without moving the camera's position.
Also, I want to limit the span of rotation (so that they cannot rotate the camera to look behind them).
I found FirstPersonControls, but I want the user to have to click and drag to rotate the view.
I know of the minecraft example, but it doesn't do the click and drag or angle restriction.
Does anyone know of any other existing examples that accomplish something similar? Thanks.
I'm designing a game in Cocos2d, and at one point I have coins shooting out on a platform from a zelda-ish perspective. I'd like to display the coin's shadow sprite (a different sprite from the coin) on the platform, but mask or clip the shadow sprite on the edge of the platform. The coin can continue off the edge of the platform, but the shadow should stop at the edge. The platform also moves, so I need the shadow sprite to track with the platform's movement.
I thought it could work to use a CCClippingNode for this, but I can't add it as a child of anything in a spriteBatchNode which is how I'm making my platform. Without having the shadow as a child of the platform, I'll mess up z-order and the shadow movement won't track correctly. I also checked out Ray Wenderlich's tutorial on masking a sprite but I don't think that'll work since it looks like it masks an individual sprite texture and not an area of the view where the sprite shouldn't be displayed. Any ideas on how to solve this?
When using a camera with myCameraNode.camera.usesOrthographicProjection = YES;, as far as I can tell you can't zoom as you normally would using the default controls given by myScene.allowsCameraControl = YES; – the only way to zoom that I can tell is by changing myCameraNode.scale = (SCNVector3*)...
Is there a way to somehow bind the scroll wheel to this scale parameter, while retaining the standard camera controls for rotation/translation? Or to otherwise 'fix' the default camera controls?
Edit: I think I'm misunderstanding how the camera works. The two-finger zoom gesture does still work with orthographic projection, but it seems like it only lets me zoom out and not let me zoom in any further. I suspect it may be related to the myCameraNode.scale, but if I don't set that parameter the objects in my scene are huge and I only see a tiny fraction of it (and the larger the scale the smaller my objects get).
The built-in camera controls on SCNView are pretty basic, probably best used only for debugging. For a production app, it's better to control the camera yourself, especially if you're using orthographic projection. Set up your own event handling that controls the orthographicScale property of the camera, and you're set.
Followup on comment:
The scale property on SCNNode controls how big a node's content is relative to its parent node — it's a coordinate space transformation, just like rotation and position. It's not really appropriate for implementing camera zoom. In a perspective projection, you use the camera's xFov and/or yFov properties to zoom (and I presume that's what the built-in camera controls do). The API doesn't define what the controls do for an orthographic camera, so anything you observe about its behavior is probably undefined and might be a bug... you might not be able to rely on it staying that way.
If there's more you'd like the built-in camera controls to handle, I'd recommend filing an enhancement request.
I have a snow falling animation using the uiview particle emitter. I am able to animate the snow in various ways thanks to much research, including changing the image content of the particles. There is a circular region where I would like to change the snow image of the particles, and then change the image back when the particle leaves the region. (snow falling through lamp light)
I was thinking of cooking up a formula to switch content images based on the position of the particle in a animation loop, but I am unable to get the x, y of the particle. Is it possible to get the position of individual particles?
Or perhaps particle collision detection?