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Height Control Mechanism/Singapore Use Case

MihaiAtofanei

Hy,

I have a question about the use case presented by the Singapore Urban Authority, creating a development scenario they created those three yellow views that they want to be preserved while developing the new neighborhood, any suggestions how can you create them?

As well they have a height control mechanism (screen shot 2) were they conditioned the new development to a certain height, any suggestion how this one can be coded?

Any leads will be much appreciated,

Thank you,

Mihai

Designing Our Future – Urban Redevelopment Authority - YouTube

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ThomasFuchs

Hello Mihai

Thank you for your question.

The CGA models are controlled by occlusion queries using the inside / overlaps / touches function—Esri CityEngine | ArcGIS Desktop .

I created a simple building rule that checks from top to bottom for floors outside an envelop and colors them red.

version <SPAN class="string token">"2017.1"</SPAN>

@<SPAN class="token function">Range</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">2</SPAN><SPAN class="punctuation token">)</SPAN>
attr LOD <SPAN class="operator token">=</SPAN> <SPAN class="number token">1</SPAN>
@<SPAN class="token function">Range</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">150</SPAN><SPAN class="punctuation token">)</SPAN>
attr maxFloors <SPAN class="operator token">=</SPAN> <SPAN class="number token">50</SPAN>
attr floorheight <SPAN class="operator token">=</SPAN> <SPAN class="number token">4</SPAN>

@StartRule
Lot <SPAN class="operator token">--</SPAN><SPAN class="operator token">></SPAN> <SPAN class="token function">offset</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">3</SPAN><SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="token function">comp</SPAN><SPAN class="punctuation token">(</SPAN>f<SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN> inside<SPAN class="punctuation token">:</SPAN> Initial <SPAN class="punctuation token">}</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp; 
Initial <SPAN class="operator token">--</SPAN><SPAN class="operator token">></SPAN> <SPAN class="token function">extrude</SPAN><SPAN class="punctuation token">(</SPAN>maxFloors<SPAN class="operator token">*</SPAN>floorheight<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp; FloorSplit

FloorSplit<SPAN class="operator token">--</SPAN><SPAN class="operator token">></SPAN>
&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">case</SPAN> <SPAN class="token function">overlaps</SPAN><SPAN class="punctuation token">(</SPAN>inter<SPAN class="punctuation token">,</SPAN> <SPAN class="string token">"limit"</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">:</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="token function">split</SPAN><SPAN class="punctuation token">(</SPAN>y<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">{</SPAN><SPAN class="operator token">~</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">:</SPAN>FloorSplit <SPAN class="operator token">|</SPAN> floorheight<SPAN class="punctuation token">:</SPAN> Outside<SPAN class="punctuation token">}</SPAN> 
&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">else</SPAN><SPAN class="punctuation token">:</SPAN> 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">case</SPAN> LOD <SPAN class="operator token"><</SPAN> <SPAN class="number token">1</SPAN><SPAN class="punctuation token">:</SPAN> Mass
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <SPAN class="keyword token">else</SPAN><SPAN class="punctuation token">:</SPAN> <SPAN class="token function">split</SPAN><SPAN class="punctuation token">(</SPAN>y<SPAN class="punctuation token">)</SPAN><SPAN class="punctuation token">{</SPAN><SPAN class="operator token">~</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">:</SPAN>FloorSplit <SPAN class="operator token">|</SPAN> floorheight<SPAN class="punctuation token">:</SPAN>&nbsp; Floor<SPAN class="punctuation token">}</SPAN>

Mass<SPAN class="operator token">--</SPAN><SPAN class="operator token">></SPAN> <SPAN class="token function">color</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"#0000ff"</SPAN><SPAN class="punctuation token">)</SPAN>

Floor<SPAN class="operator token">--</SPAN><SPAN class="operator token">></SPAN> <SPAN class="token function">color</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"#00ff00"</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="token function">report</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"Floos"</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">)</SPAN>

Outside<SPAN class="operator token">--</SPAN><SPAN class="operator token">></SPAN> <SPAN class="token function">color</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"#ff0000"</SPAN><SPAN class="punctuation token">)</SPAN> <SPAN class="comment token">// or NIL</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Here is an example how to create an view shed occluder, just draw a shape and add this rule:

version <SPAN class="string token">"2017.1"</SPAN>

@<SPAN class="token function">Range</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="number token">5</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">500</SPAN><SPAN class="punctuation token">)</SPAN>
attr height <SPAN class="operator token">=</SPAN> <SPAN class="number token">100</SPAN>

@StartRule
Occluder <SPAN class="operator token">--</SPAN><SPAN class="operator token">></SPAN> <SPAN class="token function">extrude</SPAN><SPAN class="punctuation token">(</SPAN>world<SPAN class="punctuation token">.</SPAN>up<SPAN class="punctuation token">,</SPAN>height<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="token function">label</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"limit"</SPAN><SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="token function">set</SPAN><SPAN class="punctuation token">(</SPAN>material<SPAN class="punctuation token">.</SPAN>opacity<SPAN class="punctuation token">,</SPAN><SPAN class="number token">0.3</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

Finally a slope occluder to control the height of a building. Just draw a shape representing an area that shall be visible from a given angle and add this rule:

version <SPAN class="string token">"2017.1"</SPAN>

@<SPAN class="token function">Range</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">89</SPAN><SPAN class="punctuation token">)</SPAN>
attr angle <SPAN class="operator token">=</SPAN> <SPAN class="number token">30</SPAN>
@<SPAN class="token function">Range</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="number token">50</SPAN><SPAN class="punctuation token">,</SPAN><SPAN class="number token">1000</SPAN><SPAN class="punctuation token">)</SPAN>
attr dist <SPAN class="operator token">=</SPAN> <SPAN class="number token">500</SPAN>

@StartRule
Waterfront <SPAN class="operator token">--</SPAN><SPAN class="operator token">></SPAN> <SPAN class="token function">extrude</SPAN><SPAN class="punctuation token">(</SPAN>world<SPAN class="punctuation token">.</SPAN>up<SPAN class="punctuation token">.</SPAN>flatTop<SPAN class="punctuation token">,</SPAN><SPAN class="number token">0</SPAN><SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="token function">comp</SPAN><SPAN class="punctuation token">(</SPAN>f<SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN> top <SPAN class="operator token">=</SPAN> Top <SPAN class="punctuation token">}</SPAN>

Top <SPAN class="operator token">--</SPAN><SPAN class="operator token">></SPAN> <SPAN class="token function">extrude</SPAN><SPAN class="punctuation token">(</SPAN>world<SPAN class="punctuation token">.</SPAN>up<SPAN class="punctuation token">,</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="token function">comp</SPAN><SPAN class="punctuation token">(</SPAN>f<SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN> side<SPAN class="operator token">=</SPAN> Sides <SPAN class="punctuation token">}</SPAN>

Sides <SPAN class="operator token">--</SPAN><SPAN class="operator token">></SPAN> <SPAN class="token function">extrude</SPAN><SPAN class="punctuation token">(</SPAN>vertex<SPAN class="punctuation token">.</SPAN>normal<SPAN class="punctuation token">,</SPAN> dist<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp; <SPAN class="token function">comp</SPAN><SPAN class="punctuation token">(</SPAN>f<SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN> back<SPAN class="punctuation token">:</SPAN> Slope <SPAN class="operator token">|</SPAN> all<SPAN class="punctuation token">:</SPAN> NIL <SPAN class="punctuation token">}</SPAN>
&nbsp;&nbsp;&nbsp; 
Slope&nbsp; <SPAN class="operator token">--</SPAN><SPAN class="operator token">></SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="token function">roofShed</SPAN><SPAN class="punctuation token">(</SPAN>angle<SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="token function">comp</SPAN><SPAN class="punctuation token">(</SPAN>f<SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">{</SPAN> &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;vertical<SPAN class="punctuation token">:</SPAN> NIL <SPAN class="operator token">|</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bottom<SPAN class="punctuation token">:</SPAN> NIL <SPAN class="operator token">|</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;all<SPAN class="punctuation token">:</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Occluder <SPAN class="punctuation token">}</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Occluder <SPAN class="operator token">--</SPAN><SPAN class="operator token">></SPAN> <SPAN class="token function">extrude</SPAN><SPAN class="punctuation token">(</SPAN>world<SPAN class="punctuation token">.</SPAN>up<SPAN class="punctuation token">,</SPAN><SPAN class="operator token">-</SPAN><SPAN class="number token">1</SPAN><SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="token function">label</SPAN><SPAN class="punctuation token">(</SPAN><SPAN class="string token">"limit"</SPAN><SPAN class="punctuation token">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="token function">set</SPAN><SPAN class="punctuation token">(</SPAN>material<SPAN class="punctuation token">.</SPAN>opacity<SPAN class="punctuation token">,</SPAN><SPAN class="number token">0.3</SPAN><SPAN class="punctuation token">)</SPAN><SPAN class="line-numbers-rows"><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN><SPAN>‍</SPAN></SPAN>

MihaiAtofanei

Thomas,

Many thanks for the clarifications, I will start implementing them see what comes out.

Mihai

AbhishekSobbana1

Hi Thomas,

I tried using the code you have provided. But doesn't generates like you have shown in screenshots. Does occlusion works in same parcel/footprint .

Code Used

Code_1.cga :-

version <SPAN class="" style="color: #669900; border: 0px; font-weight: inherit;">"2016.1"</SPAN>

@<SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">Range</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">0</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">,</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">1</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">,</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">2</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN>
attr LOD <SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">=</SPAN> <SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">1</SPAN>
attr maxFloors <SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">=</SPAN> <SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">50</SPAN>
attr floorheight <SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">=</SPAN> <SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">4</SPAN>

@StartRule
Lot<SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">--</SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">></SPAN> 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">offset</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">-</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">3</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">comp</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN>f<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN> <SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">{</SPAN> inside<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">:</SPAN> Initial <SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">}</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Initial<SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">--</SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">></SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">extrude</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN>maxFloors<SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">*</SPAN>floorheight<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;FloorSplit

FloorSplit<SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">--</SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">></SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="" style="color: #0077aa; border: 0px; font-weight: inherit;">case</SPAN> <SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">overlaps</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN>inter<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">:</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">split</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN>y<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">{</SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">~</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">1</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">:</SPAN>FloorSplit <SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">|</SPAN> floorheight<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">:</SPAN> Outside<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">}</SPAN> 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="" style="color: #0077aa; border: 0px; font-weight: inherit;">else</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">:</SPAN> 
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="" style="color: #0077aa; border: 0px; font-weight: inherit;">case</SPAN> LOD <SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;"><</SPAN> <SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">1</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">:</SPAN> Mass
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="" style="color: #0077aa; border: 0px; font-weight: inherit;">else</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">:</SPAN> <SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">split</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN>y<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">{</SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">~</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">1</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">:</SPAN>FloorSplit <SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">|</SPAN> floorheight<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">:</SPAN>&nbsp; Floor<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">}</SPAN>

Mass<SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">--</SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">></SPAN> <SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">color</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN><SPAN class="" style="color: #669900; border: 0px; font-weight: inherit;">"#0000ff"</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN>

Floor<SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">--</SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">></SPAN> <SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">color</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN><SPAN class="" style="color: #669900; border: 0px; font-weight: inherit;">"#00ff00"</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN>

Outside<SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">--</SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">></SPAN> <SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">color</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN><SPAN class="" style="color: #669900; border: 0px; font-weight: inherit;">"#ff0000"</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN> <SPAN class="" style="color: slategray; border: 0px; font-weight: inherit;">// or NIL</SPAN>

Code_2.cga :-

version <SPAN class="" style="color: #669900; border: 0px; font-weight: inherit;">"2016.1"</SPAN>

@<SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">Range</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">1</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">,</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">89</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN>
attr angle <SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">=</SPAN> <SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">30</SPAN>
@<SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">Range</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">50</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">,</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">1000</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN>
attr dist <SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">=</SPAN> <SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">500</SPAN>

@StartRule
Lot <SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">--</SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">></SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">offset</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN>dist<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">comp</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN>f<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN> <SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">{</SPAN> border<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">:</SPAN> Slope <SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">}</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Slope<SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">--</SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">></SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">rotate</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN>abs<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">,</SPAN>scope<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">,</SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">-</SPAN>angle<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">,</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">0</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">,</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">0</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">extrude</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN>world<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">.</SPAN>up<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">,</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">1</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">comp</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN>f<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">{</SPAN>bottom<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">:</SPAN>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Visualisation<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">}</SPAN>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Visualisation<SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">--</SPAN><SPAN class="" style="color: #a67f59; background: rgba(255, 255, 255, 0.5); border: 0px; font-weight: inherit;">></SPAN> <SPAN class="" style="color: #d74444; border: 0px; font-weight: inherit;">set</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">(</SPAN>material<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">.</SPAN>opacity<SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">,</SPAN><SPAN class="" style="color: #990000; border: 0px; font-weight: inherit;">0.3</SPAN><SPAN class="" style="color: #999999; border: 0px; font-weight: inherit;">)</SPAN>

ThomasFuchs

The example with the slope around a shape in the middle is a quite unusual use case.
To make this inter occlusion queries work, the Procedural Runtime preferences need to be adjusted:

neighborhood distance for inter-occlusion needs to be set to the maximum extend of the slope (attr dist in the cga rule above)

Please refer to the help for further explanations: Context (and Occlusion) Queries

AbhishekSobbana1

Thanks Thomas, it works perfectly now.

AbhishekSobbana1

Hi Thomas, sorry to disturb you again. I was trying to use the 30⁰ rule for a river but it is loosing shape while extruding.

Lot -->
extrude(world.up, dist)
comp(f) {front: Slope }
Slope -->
rotate(abs,scope,90-angle,0,0)
extrude(world.up,0.1)
Visualisation

Visualisation --> color(0,1,0) set(material.opacity,Transparent)

I am not able to figure out how to solve this.

Thanks in advance.

Anonymous User

This doesn't answer your question, but I have the camera RPK used in that demo. The demo version had a little focus box seen in the video, but I can't find that version. It was originally made in 2013, and was updated just slightly in 2016. The RPK is unlocked so you can unzip the file to get the source.

Chris

Camera.rpk.zip

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