Thursday, January 19, 2017

HOW TO CREATE REALISTIC POOL WATER IN SKETCH-UP AND KERKYTHEA


Hi everyone! I want to share my latest tutorial entitled: “How to create realistic pool water in Sketch Up and Kerkythea. For the knowledge of everyone, Kerkythea is a free standalone rendering plugin for SketchUp.

In this tutorial, we will show you three different methods on how to render realistic pool water inside Kerkythea. I will also discuss some important points on how to create effective environment settings in Kerkythea. Choosing the right environment setting(s) will enable us to produce such good-quality pool water scene.

Note: For educational purposes, we will be using the model ‘Mansão moderna’ by Anderson R. To download the model from 3D Warehouse click HERE

APPLYING WATER TEXTURE IN SKETCH UP AND EXPORTING KT XML FILE

STEP 1: Open your SKP model> apply water texture to your pool water model using ‘Paint Bucket Tool.’ Choose any available water textures from the Materials dialogue box. In this case, I will be using the ‘Water Pool Light’ texture.

STEP 2:  Click the icon ‘Export Model to Kerkythea’ from the KT tool bar> follow the ‘Export Options’ settings> Click OK

STEP3: Open your exported xml file in Kerkythea

STEP 4: In order to see the model clearly, adjust the view from ‘Wireframe’ to ‘Solid Rendering’

WATER MATERIAL # 1: Kerkythea Wavy Water

STEP 1: Under KT ‘Settings’ Menu, Click the ‘Sun and Sky Wizard’> Click ‘Next’

STEP 2: Under ‘Sky Type’ Menu> Choose ‘Hemispherical Sky’ or ‘Spherical Sky’

STEP 3: Click ‘Map/ Color’> Select Sky background (HDRI, PNG or JPEG)> then click OK

STEP 4: Adjust the ‘Intensity and Turbidity, based on your preference

SKY BACKGROUND

STEP 5: Search the ‘Water Pool Light’ texture from the ‘Models’ material box> Right Click> select Apply Material> click ‘Wavy Water.’ To download the Wavy water KT Material click HERE

Wavy Water Material Settings

STEP 6: Click ‘Start Render’> Follow the ‘Camera and Settings’ parameter> click OK

RENDER RESULT

WATER MATERIAL # 2: Dielectric/ Glass Setting 

Use the same Environment Setting and proceed to water material settings

STEP 1: Search the ‘Water Pool Light’ texture from the ‘Models’ material box> Right Click> click ‘Edit Material’> click ‘Set Dielectric/ Glass’> under the ‘Reflectance/ Transmittance, change the color of ‘Reflection’ and ‘Refraction’ into white> change the IOR value, here I used 1.33 (This is the typical IOR value of water).
Index of Refraction Reference Values

STEP 2: Adding bump maps to water material is a great way to add realism because bump maps add depth and detail to materials. Under the ‘Bump Mapping’, right click the ‘Texture’> click ‘Add Bitmap’> under ‘Bitmap Selection’ click ‘Browse’> Select the Bump map texture (JPEG)> click OK> type 0.5 value under ‘Bump Mapping Strength’

WATER BUMP MAP

STEP 3: Dielectric/ Glass Water Material Settings> click ‘Apply Changes when done’

RENDER RESULT

WATER MATERIAL # 3: Matte/ Phong Setting 


STEP 1: Change the environment settings, to do that, go to ‘Settings’ Menu> Click the ‘Sun and Sky Wizard’ option> Click ‘Next’

STEP 2: Under the ‘Sky Type’ Menu> Choose ‘Background Fit Image’> Change the Intensity and Turbidity based on your preference> change the image of the ‘Map/ Color’> click ‘Finish’

BACKGROUND

STEP 3: Search the ‘Water Pool Light’ texture from the ‘Models’ material dialogue box> Right Click> click ‘Edit Material’> click ‘Set Matte/ Phong’ > right click the ‘Diffuse’> select ‘Add Bit Map’> under ‘Bitmap Selection’ click ‘Browse’> Select the Water texture (JPEG)> click OK> type 0.5 value under Diffuse ’Weighting.’

WATER DIFFUSE TEXTURE

STEP 4: ‘Specular’ settings

STEP 5: ‘Reflection’ settings

STEP 6: ‘Refraction’ settings

STEP 7: Add Bump Map

WATER BUMP MAP

STEP 8: Matte/ Phong Settings> click ‘Apply Changes' when done

RENDER RESULT


SUMMARY

Wednesday, January 18, 2017

HOW TO DRAW CONTOUR LINES AND 3-D TOPOGRAPHIC MODEL USING SKETCH UP


Working with a topographic map, all contour lines represent ground shapes or land-forms. In terms of topographic map reading, there are two distinct types of contour line that we need to emphasize. (1)The existing or undisturbed contour line (usually presented in dashed lines) and (2) the grading line or the proposed contour line (usually presented in solid lines).



In this tutorial we will learn how to draw two distinct contour lines using Sketch Up. This is an extra little tutorial and an extension to my previous advanced topographic Sketch Up modelling tutorials such as ‘How to make a topographic map using Sketch Up’ and ‘3-D topographical landscape (Sketch Up Modelling tutorial).'
  

(1) HOW TO DRAW PROPOSED CONTOUR LINES

STEP 1:  Draw and plot contour lines using the ‘Arc Tools’> delete any faces that formed when lines were drawn

STEP 2: Adjust the elevation using the ‘Move Tool

STEP 3: Ctrl+A (Select all). Using the Sandbox Tool, click the icon ‘From Contours’ or go to Draw>Sandbox>From Contours.  This process will automatically generate 3D object(s).

RESULT

(2) HOW TO DRAW EXISTING CONTOUR LINES 


STEPS 1-3: Follow the preceding steps

STEP 4: In this step, we will be needing a plugin called ‘Construction Lines’ in order to change the contour lines from solid line to dashed line. This plugin is available in Extension Warehouse. Here, select the grouped contour lines> Right Click> click ‘Convert to Construction Line.’ 

RESULT

Friday, January 6, 2017

HOW TO MAKE A TOPOGRAPHIC MAP USING SKETCHUP


Modelling and analyzing topographic map becomes more convenient with the aid of modern technology such as online map surveying and 3-D modelling software.

Most contour lines found in online topographic maps such as Google map (https://www.google.com.ph/maps), Open Street Maps (https://www.openstreetmap.org/), NAMRIA (http://www.namria.gov.ph/), etc. are labelled with elevations. These topographic elevations found mostly on online map can only be examined in a macro scale level, showing a minimum of 20 meter contour interval.

Topographic maps may have many contour lines. The contour interval chosen for a map depends on topography in the mapped area. In areas with high relief the contour interval is usually larger to prevent the map from having too many contour lines. On the other hand, areas with moderate slope required an enormous number of contour lines in order to show such great detail.

Technically, contour lines can be drawn for any elevation. Using different 3-D modelling software such as SketchUp, we can expand the contour interval, producing many contour lines. This process of expanding the contour interval is applicable in small areas with moderate slope topography.

In this tutorial, we will learn how to draw contour lines and expand the contour intervals using SketchUp. Here, we will try to adjust the value of contour interval from 20 meter to 5 meter.

Before we start the modelling procedures, we should analyze first the contour interval of the topographic map. Here’s a quick guide on how to read topographic map.


QUICK GUIDE ON HOW TO READ TOPOGRAPHIC MAP 

(1) Index Contour, (2) Minor Contour Line, (3) Contour Interval

To determine the contour interval of a point, you must have a reference line from which to start. This reference line is an index contour (major contour line). Based on the reference map, an index is one that is bolder, darker contour line and has a value written on the line. The value written on the index line is the elevation. 

Every topographic map has a contour interval which remains constant throughout the drawing. The elevation value of the minor contour lines can be determined through the counting process from one index contour to another. For instance, if the first index contour line has a value of 100m and the second index contour line has a value of 200m, the value of the minor contour lines will be 120m, 140m, 160m, and 180m. Therefore, the contour interval is 20 meter.

20 Meter Contour Interval



6 CARDINAL RULES OF CONTOURS


RULE #1: Contour always occur in pairs
RULE #2: Contours never cross
RULE #3: Contours have equal vertical separation
RULE #4: All contour lines close in themselves
RULE #5: Contours do not merge
RULE #6: The steepest slope is a line perpendicular to the contour


A. HOW TO VIEW GOOGLE MAP WITH CONTOUR LINES

STEP 1: Open the Google map> Click the expand side panel>search the location of the site by typing the address on the search bar> click the 'map view'. In the figure, you see the results for Angono-Binangonan Petroglyphs.

STEP 2: Click the menu from the Google map panel> click the terrain option

STEP 3: Use the Zoom controls on the left corner and click the negative sign to zoom out the map. Make sure that all contour lines are visible when zoom out> click 'print screen' (keyboard)> paste the image in 'paint'> save in JPEG format.

B. HOW TO CREATE A 3-D TOPOGRAPHIC MODEL USING SKETCH-UP

STEP 1: Click 'File'> import image> select the map image> click 'Open'

STEP 2: Draw a 500 meter line. Here, click the 'lines' from the drawing tool> type the 500 meter value on the 'Edges length' located in the 'Entity Info' then press Enter. The 500 meter line will serves as a scale reference. Re-scale the imported topographic map image (make sure the 500 meter graphic map scale image will fit into the the 500 meter line.

STEP 3: Draw a 1000 x 1000 meter border line box

STEP 4: To draw curves, click the 'Arcs' from the drawing tool> Trace the contour lines from the map> delete any faces that formed when lines were drawn

ELEVATION VALUE

STEP 5: To adjust the elevation of each contour lines, use the Move Tool. Click the contour line that you want to adjust, then click the Move Tool> press the up key button (keyboard)> pull-up the selected contour line or object vertically (it is locked to the blue axis)> Type the elevation value shown in 'Measurements Toolbar' (follow the elevation value from the Google map)> press Enter key.

STEP 6: Ctrl+A (Select all). Using the Sandbox Tool, click the icon ‘From Contours’ or go to Draw>Sandbox>From Contours.  This process will automatically generate 3D object(s).

RESULT : 3-D Topographic model with 20 meter contour interval

C. HOW TO CREATE A 5 METER CONTOUR MAP USING SKETCH- UP


Here, we will try to adjust the contour interval of our 3-D model terrain from 20 meter (Google map contour reference) to 5 meter contour interval.


STEP 1: Lock the grouped terrain model and the grouped index contour lines. To do that, select the model> right click> click 'Lock'

STEP 2: Draw a square or rectangular plane> make group> move the plane to the lowest point of the terrain

Square plane

STEP 3a: Make a multiple copies of the plane until the whole terrain model is covered. To do that, select the plane then click the Move Tool + Ctrl key> press the up key button (from the keyboard)> pull-up the selected plane vertically (it is locked to the blue axis)> Type the elevation value in the Measurements Toolbar (in this case, type 5 meter in the Measurements Toolbar) and press the Enter key.

STEP 3b: Type 50x (to duplicate the plane)> press Enter

STEP 4: Select the entire plane> Right click > make group> Hide

STEP 5: Unlock the terrain model. To do that, select the model> right click> click Unlock.

STEP 6: Explode the terrain model. To do that, select the model> right click> click Explode

Explode Model

STEP 7: Unhide the grouped plane. To do that, go to Edit> select 'unhide'> click ‘Last’

STEP 8: Select the grouped slicing planes> Right click> choose ‘Intersect Faces’> click ‘With Model.’ This process will enable you to intersect your grouped slicing planes with your terrain model.

STEP 9: Delete or Hide the grouped slicing planes.

Result so far

STEP 10: Based on the “6 Cardinal Rules of Contours”, all contours never cross or merge with each other. Thus, we need to remove all the overlapping edges from the model. To do that, hold Ctrl+ while applying the Erase Tool. Remove all the overlapping edges.

SUMMARY

FINAL OUTPUT

FINAL OUTPUT

Finally, you have a topographic map with 5 meter contour interval. You can now start designing the site by adding different structural elements such as path walk, roads, garden, buildings, house etc. Label all the contour lines using Sketch Up Layout.