GSDP:GAM100/CProcessing/worldToScreen() - Revision history

>Zachary.logsdon at 18:17, 3 June 2019

2019-06-03T18:17:01Z

>Zachary.logsdon at 18:06, 3 June 2019

2019-06-03T18:06:43Z

>Zachary.logsdon at 18:06, 3 June 2019

2019-06-03T18:06:10Z

>Zachary.logsdon: New page: {{GSDP:GAM100API.css}} = worldToScreen() = == Description == Takes an input coordinate in world space and transforms it to screen coordinates. ===Parameters=== worldToScreen(float* x, fl...

2019-06-03T18:05:52Z

New page: {{GSDP:GAM100API.css}} = worldToScreen() = == Description == Takes an input coordinate in world space and transforms it to screen coordinates. ===Parameters=== worldToScreen(float* x, fl...

New page

{{GSDP:GAM100API.css}}
= worldToScreen() =

== Description ==
Takes an input coordinate in world space and transforms it to screen coordinates.

===Parameters===
worldToScreen(float* x, float* y)

* x - (float*) The x coordinate to convert, x result will be stored here as well.
* y - (float*) The y coordinate to convert, y result will be stored here as well.

== Example ==
<syntaxhighlight lang='c'>
void update()
{
// transform a random amount
translate((float)randomRangeFloat(-100.0f, 100.0f), (float)randomRangeFloat(-100.0f, 100.0f));
scale((float)randomRangeFloat(0.1f, 10.0f));
rotate((float)randomRangeFloat(0.0f, 360.0f));

// Variables to pass into the conversion functions
float x = PI;
float y = PI;

// Run back and forth 100 times
for (int i = 0; i < 100; ++i)
{
screenToWorld(&x, &y);
worldToScreen(&x, &y);
}

// Should still be PI
printf(" %9f\n(%9f,%9f)\n", PI, x, y);
}
</syntaxhighlight>

==== Related ====
* [[GSDP:GAM100/CProcessing |Main Page ]]
* [[GSDP:GAM100/CProcessing/worldToScreen() |worldToScreen() ]]

← Older revision		Revision as of 18:06, 3 June 2019
Line 39:		Line 39:
	* [[GSDP:GAM100/CProcessing \|Main Page ]]		* [[GSDP:GAM100/CProcessing \|Main Page ]]
	* [[GSDP:GAM100/CProcessing/worldToScreen() \|worldToScreen() ]]		* [[GSDP:GAM100/CProcessing/worldToScreen() \|worldToScreen() ]]
		+	* [[GSDP:GAM100/CProcessing/screenToWorld() \|screenToWorld() ]]

@@ Line 6: / Line 6: @@
 ===Parameters===
-worldToScreen(float* x, float* y)
+worldToScreen(float xIn, float yIn, float* xOut, float* yOut)
-* x - (float*) The x coordinate to convert, x result will be stored here as well.
+* xIn - (float) The x coordinate to convert.
-* y - (float*) The y coordinate to convert, y result will be stored here as well.
+* yIn - (float) The y coordinate to convert.
 == Example ==
@@ Line 15: / Line 17: @@
 void init()
+{
      // Variables to pass into the conversion functions
      float x = PI;
@@ Line 27: / Line 24: @@
      for (int i = 0; i < 100; ++i)
+     {
-         screenToWorld(&x, &y);
+         screenToWorld(x, y, &x, &y);
-         worldToScreen(&x, &y);
+         worldToScreen(x, y, &x, &y);
+     }

@@ Line 13: / Line 13: @@
 == Example ==
 <syntaxhighlight lang='c'>
-void update()
+void init()
+{
      // transform a random amount