Unity get terrain height position. . Can i somehow have a variable to set it to a specified height? I didn't try too much, because i don' Jun 20, 2010 · I am trying to make a particle system that has the same x width and z lenght of my terrain, and so what I thought to do was through code get those dimensions and then through code change my particle systems range in the x and z direction to match the terrain's dimensions. Gets an array of heightmap samples. not in Unity - Scripting API: Terrain, nor in Unity - Scripting API: TerrainData I’m not talking about setting it in the editor, I want to get the value in code (to use in calculations) AlucardJay February 20, 2013 Nov 30, 2010 · when I click on the terrain, I would like to determine the height of the terrain in that area, how can I go out this Use the Set Height tool to adjust the height of an area on the Terrain The landscape in your scene. From the left, the first button activates the Raise/Lower Height tool. Unity represents the height of each point on the Terrain The landscape in your scene. Working with Heightmaps Terrain tools that affect height, such as Raise or Lower Terrain and Set the height of an area or tile, use a grayscale texture called a heightmap. y; But I want to find the actual distance along the y axis between my vehicle and the terrain mesh. I am a bit puzzled though, as sometimes the height sampled in the shader doesn't match Description The TerrainData class stores heightmaps, detail mesh positions, tree instances, and terrain texture alpha maps. May 5, 2011 · Hey all, does anyone has an idea how i can read the actual height of an instantiated prefab? I am trying to place an instantiated prefab on the terrain and i’ve read the height with sampleHeight method, but it always places the object halfway under the terrain. No matter what I have tried, the resulting heights just get set far above the maximum height for the Terrain, and are all flat. Oct 3, 2020 · How to get the terrain height at mouse position when in 2D map? Asked 5 years, 1 month ago Modified 3 years, 11 months ago Viewed 2k times Returns a two dimensional array of heightmap samples. Log(height); // Increase it by . First index of heightmap samples to retrieve along the Terrain's z axis. Sep 15, 2018 · Get the current terrain by finding the closest terrain from the player's position. No matter what I do, the terrain only shows the lowest layer (grass): The documentation on terrain Lit shader says: Enable Height-based Blend Enable to have Unity take the height values from the blue channel of the Mask Map Texture. terrainData. x, 0, (int)position. terrain grabbing terrain height sections of 0 height and ~50 Dec 10, 2011 · I have a small scene, consisting of a 128x128x128 terrain. Sep 18, 2013 · Questions & Answers legacy-topics 1 10359 July 20, 2014 Terrain get sample height gives slightly wrong results,Terrain sampleheight gives SLIGHTLY wrong answer Questions & Answers legacy-topics 1 847 December 14, 2017 Description Samples the height at the given position defined in world space, relative to the Terrain space. float height = terrain. To access the tool, click on the Paint Terrain icon, and select the Set Height tool from the drop-down menu Aug 30, 2013 · I need to place a small rectangle on the terrain at runtime (cursor in a grid-based game). Nov 5, 2025 · Description Calculates the height in world space units of a point on the heightmap. Any hints would be nice. activeTerrain. I tried using Terrain. 2 days ago · Calculates the height in world space units of a point on the heightmap. I execute this code, every time you press “T”. This method automatically clamps the world position to the Terrain boundaries. Then call the routine with raycasted height + xxx (extra height). Thank you for helping us improve the quality of Unity Documentation. Some code examples would be really wonderful on how to go about it. Terrain tools that affect height, such as Raise or Lower Terrain and Set Height, use a grayscale texture called a heightmap. Jan 8, 2011 · Is it possible to load heightmap data into a terrain at runtime in Unity? If so, how might I go about doing this? Thanks. Showcase your work and use this independent forum to connect with enthusiasts sharing the same passions. This is a gift and a curse because rendering can Sep 6, 2006 · I have a vehicle that is floating over a terrain mesh and I want to find it’s “altitude”. SampleHeight function to get the terrain height at a given position. The samples are represented as float values ranging from 0 to 1. I’m able to find it’s height in world coordinates with this: var Altitude = transform. So, given a point on the terrain, how do I get the height of the terrain at that point? Jan 17, 2019 · Unity3d getting terrain height Ask Question Asked 6 years, 9 months ago Modified 6 years, 9 months ago May 10, 2015 · In the editor on the options tab for terrain there is Terrain Height? How can I get this by code? Feb 19, 2013 · Steven-1 February 19, 2013, 10:59pm 1 seems simple, but I can’t find anything that returns me the terrain’s maximum height. y)); Apr 22, 2019 · My question is how can I import real world map to unity 3d with its height map (Get road data from OSM maybe) I need height Map because if there is some kind of flyover or highway the terrain should have that height at that position. Use the Set Height tool to adjust the height of an area on the Terrain The landscape in your scene. More info See in Glossary to a specific value. I studied the docs and found that what I probably need to use are raycast, raycasthit or Jan 3, 2019 · Currently the terrain under the object the script is on, the terrain will go to the max height. Distance or Vector3. // Get the height at 0,0 float height = Terrain. In fact, the sample code there is moving an object’s y to the terrain height. Number of samples to retrieve along the Terrain's x axis. activeTerrain Sep 23, 2025 · Description Calculates the height in world space units of a point on the heightmap. Here’s some example code: Terrain terrainComp = forTerrainComps[tx, ty]; var renderTex = terrainComp I'm getting a really weird issue with the terrainData. When importing the height map the edges may get stretch ed or don’t fit exactly – this can be fixed by cropping the heightmap or using available sculpt tools. Nov 9, 2022 · Height Maps Before we go any further, let’s quickly discuss what Height Maps are. The array has the dimensions [height,width] and is indexed as [y,x]. To access the tool, click on the Paint Terrain icon, and select the Set Height tool from the drop-down menu A Terrain GameObject adds a large flat plane to your scene and you can use the Terrain’s Inspector window to create a detailed landscape. Raise or Lower Terrain and Set Height, use a grayscale texture called a heightmap. Note that this will clear out your terrain data, so you'll have to re-import or redraw your heightmap. The basic premise is to capture the terrain height using raycasts (the white dots on the screenshot below), which I then store in a texture and set as a global shader parameter using Shader. Sep 29, 2016 · Like I said, I'm very new : ( Could you provide the lines of code that get the terrain width and height from TerrainData and assign it to my custom variables terrainWidth and terrainHeight, please? Description Samples the height at the given position defined in world space, relative to the Terrain space. SampleHeight and terrain. GetHeight(0, 0); Debug. Cheers May 7, 2019 · I’m having trouble using the (hopefully faster) API that sets heights on a Terrain object. The first three tools on the terrain inspector toolbar are used to paint changes in height onto the terrain. Height maps are how Unity handles the rendering of the terrain. The height will accumulate if you hold the mouse in one place, similar to the effect of the airbrush tools in image Jul 20, 2014 · Why terrain. It should return the worldheight of the terrain at a point, but for some reason it returns "0" over part of the island (sandy part) and about 50 over the rest of the island (grassy part). sqrMagnitude (faster). The terrain has hills n whatnot, so I need to know the height of the terrain at all four corners of the rectangle, otherwise its mesh gets hidden under the terrain. x and y are pixel coordinates in the heightmap, and the returned value does not take into account the heightmap's position. It is not returning the actual world height of the terrain at the point. I am currently working on creating a terrain blending shader using shader graph (see results below). You may need to scale the height of the terrain to get the best effect. SampleHeight() to do this, but it’s very inaccurate and about half of the time, the reported height is lower then Description Samples the height at the given position defined in world space, relative to the Terrain space. 001 Terrain. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable. Aug 10, 2010 · To set the heightmap height in Unity, click your terrain, go to the Terrain menu, hit "Set Heightmap Resolution", and change the height. GetHeight () method. This community is here to help users of all levels gain access to resources, information, and support from others in regards to anything related to Unity. GetHeight returning diferent results? Hi i work with terrain (placing Object on it) and when i work with height of terrain a discover that these two method returnig diferent result (and i cant find out why). A Terrain GameObject adds a large flat plane to your scene and you can use the Terrain’s Inspector window to create a detailed landscape. If you do not enable this property, Unity Sep 15, 2015 · You can use the Terrain. Oct 15, 2021 · This stuff can get hairy because there are so many coordinate systems involved: world, local, terrain position, terrain normalized height, heightmap resolution, etc. When you paint with this tool, the height will be increased as you sweep the mouse over the terrain. SetGlobalTexture. Thanks in advance. Number of samples to retrieve along the Terrain's z axis. Jan 12, 2022 · What are the dimensions of the placement area and what resolution of height map do you need? Description Samples the height at the given position defined in world space, relative to the Terrain space. May 27, 2024 · I don’t understand how to get Height-based Blend to work with the Universal Render Pipeline/Terrain/Lit material. First index of heightmap samples to retrieve along the Terrain's x axis. To access the tool, click on the Paint Terrain icon, and select the Set Height tool from the drop-down menu Description The TerrainData class stores heightmaps, detail mesh positions, tree instances, and terrain texture alpha maps. You can do this by sorting the terrain position, using Vector3. Those are the dimensions and height. May 29, 2010 · Since my terrain is bumpy, I need to be able to get the height of the terrain for a given (x,z) coordinate. Feb 4, 2010 · Before inserting a building to the terrain, first look terrain height with raycast at wanted position. All I want to do is be able to modify the terrain height in a sensible and clear way. SampleHeight(new Vector3((int)position. jjt dz8o bx6ti wtr bzvmol k8w0 ph4j gvbrhl yx7i 5hbhge