From 9cd57b731ab1c666d4a1cb725538fdc137763d12 Mon Sep 17 00:00:00 2001
From: Starla Insigna <starla4444@gmail.com>
Date: Sat, 30 Jul 2011 11:19:14 -0400
Subject: Initial commit (version 0.2.1)

---
 libs/cocos2d/CCDrawingPrimitives.m | 272 +++++++++++++++++++++++++++++++++++++
 1 file changed, 272 insertions(+)
 create mode 100755 libs/cocos2d/CCDrawingPrimitives.m

(limited to 'libs/cocos2d/CCDrawingPrimitives.m')

diff --git a/libs/cocos2d/CCDrawingPrimitives.m b/libs/cocos2d/CCDrawingPrimitives.m
new file mode 100755
index 0000000..f7df2b6
--- /dev/null
+++ b/libs/cocos2d/CCDrawingPrimitives.m
@@ -0,0 +1,272 @@
+/*
+ * cocos2d for iPhone: http://www.cocos2d-iphone.org
+ *
+ * Copyright (c) 2008-2010 Ricardo Quesada
+ * Copyright (c) 2011 Zynga Inc.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#import <math.h>
+#import <stdlib.h>
+#import <string.h>
+
+#import "CCDrawingPrimitives.h"
+#import "ccTypes.h"
+#import "ccMacros.h"
+#import "Platforms/CCGL.h"
+
+void ccDrawPoint( CGPoint point )
+{
+	ccVertex2F p = (ccVertex2F) {point.x * CC_CONTENT_SCALE_FACTOR(), point.y * CC_CONTENT_SCALE_FACTOR() };
+	
+	// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
+	// Needed states: GL_VERTEX_ARRAY, 
+	// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY	
+	glDisable(GL_TEXTURE_2D);
+	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+	glDisableClientState(GL_COLOR_ARRAY);
+	
+	glVertexPointer(2, GL_FLOAT, 0, &p);	
+	glDrawArrays(GL_POINTS, 0, 1);
+
+	// restore default state
+	glEnableClientState(GL_COLOR_ARRAY);
+	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+	glEnable(GL_TEXTURE_2D);	
+}
+
+void ccDrawPoints( const CGPoint *points, NSUInteger numberOfPoints )
+{
+	// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
+	// Needed states: GL_VERTEX_ARRAY, 
+	// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY	
+	glDisable(GL_TEXTURE_2D);
+	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+	glDisableClientState(GL_COLOR_ARRAY);
+
+	ccVertex2F newPoints[numberOfPoints];
+
+	// iPhone and 32-bit machines optimization
+	if( sizeof(CGPoint) == sizeof(ccVertex2F) ) {
+
+		// points ?
+		if( CC_CONTENT_SCALE_FACTOR() != 1 ) {
+			for( NSUInteger i=0; i<numberOfPoints;i++)
+				newPoints[i] =  (ccVertex2F){ points[i].x * CC_CONTENT_SCALE_FACTOR(), points[i].y * CC_CONTENT_SCALE_FACTOR() };
+
+			glVertexPointer(2, GL_FLOAT, 0, newPoints);
+
+		} else
+			glVertexPointer(2, GL_FLOAT, 0, points);
+		
+		glDrawArrays(GL_POINTS, 0, (GLsizei) numberOfPoints);
+		
+	} else {
+		
+		// Mac on 64-bit
+		for( NSUInteger i=0; i<numberOfPoints;i++)
+			newPoints[i] = (ccVertex2F) { points[i].x, points[i].y };
+			
+		glVertexPointer(2, GL_FLOAT, 0, newPoints);
+		glDrawArrays(GL_POINTS, 0, (GLsizei) numberOfPoints);
+
+	}
+
+	
+	// restore default state
+	glEnableClientState(GL_COLOR_ARRAY);
+	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+	glEnable(GL_TEXTURE_2D);	
+}
+
+
+void ccDrawLine( CGPoint origin, CGPoint destination )
+{
+	ccVertex2F vertices[2] = {
+		{origin.x * CC_CONTENT_SCALE_FACTOR(), origin.y * CC_CONTENT_SCALE_FACTOR() },
+		{destination.x * CC_CONTENT_SCALE_FACTOR(), destination.y * CC_CONTENT_SCALE_FACTOR() }
+	};
+
+	// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
+	// Needed states: GL_VERTEX_ARRAY, 
+	// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY	
+	glDisable(GL_TEXTURE_2D);
+	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+	glDisableClientState(GL_COLOR_ARRAY);
+	
+	glVertexPointer(2, GL_FLOAT, 0, vertices);	
+	glDrawArrays(GL_LINES, 0, 2);
+	
+	// restore default state
+	glEnableClientState(GL_COLOR_ARRAY);
+	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+	glEnable(GL_TEXTURE_2D);		
+}
+
+
+void ccDrawPoly( const CGPoint *poli, NSUInteger numberOfPoints, BOOL closePolygon )
+{
+	ccVertex2F newPoint[numberOfPoints];
+
+	// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
+	// Needed states: GL_VERTEX_ARRAY, 
+	// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY	
+	glDisable(GL_TEXTURE_2D);
+	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+	glDisableClientState(GL_COLOR_ARRAY);
+
+	
+	// iPhone and 32-bit machines
+	if( sizeof(CGPoint) == sizeof(ccVertex2F) ) {
+
+		// convert to pixels ?
+		if( CC_CONTENT_SCALE_FACTOR() != 1 ) {
+			memcpy( newPoint, poli, numberOfPoints * sizeof(ccVertex2F) );
+			for( NSUInteger i=0; i<numberOfPoints;i++)
+				newPoint[i] = (ccVertex2F) { poli[i].x * CC_CONTENT_SCALE_FACTOR(), poli[i].y * CC_CONTENT_SCALE_FACTOR() };
+
+			glVertexPointer(2, GL_FLOAT, 0, newPoint);
+
+		} else
+			glVertexPointer(2, GL_FLOAT, 0, poli);
+
+		
+	} else {
+		// 64-bit machines (Mac)
+		
+		for( NSUInteger i=0; i<numberOfPoints;i++)
+			newPoint[i] = (ccVertex2F) { poli[i].x, poli[i].y };
+
+		glVertexPointer(2, GL_FLOAT, 0, newPoint );
+
+	}
+		
+	if( closePolygon )
+		glDrawArrays(GL_LINE_LOOP, 0, (GLsizei) numberOfPoints);
+	else
+		glDrawArrays(GL_LINE_STRIP, 0, (GLsizei) numberOfPoints);
+	
+	// restore default state
+	glEnableClientState(GL_COLOR_ARRAY);
+	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+	glEnable(GL_TEXTURE_2D);	
+}
+
+void ccDrawCircle( CGPoint center, float r, float a, NSUInteger segs, BOOL drawLineToCenter)
+{
+	int additionalSegment = 1;
+	if (drawLineToCenter)
+		additionalSegment++;
+
+	const float coef = 2.0f * (float)M_PI/segs;
+	
+	GLfloat *vertices = calloc( sizeof(GLfloat)*2*(segs+2), 1);
+	if( ! vertices )
+		return;
+
+	for(NSUInteger i=0;i<=segs;i++)
+	{
+		float rads = i*coef;
+		GLfloat j = r * cosf(rads + a) + center.x;
+		GLfloat k = r * sinf(rads + a) + center.y;
+		
+		vertices[i*2] = j * CC_CONTENT_SCALE_FACTOR();
+		vertices[i*2+1] =k * CC_CONTENT_SCALE_FACTOR();
+	}
+	vertices[(segs+1)*2] = center.x * CC_CONTENT_SCALE_FACTOR();
+	vertices[(segs+1)*2+1] = center.y * CC_CONTENT_SCALE_FACTOR();
+	
+	// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
+	// Needed states: GL_VERTEX_ARRAY, 
+	// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY	
+	glDisable(GL_TEXTURE_2D);
+	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+	glDisableClientState(GL_COLOR_ARRAY);
+	
+	glVertexPointer(2, GL_FLOAT, 0, vertices);	
+	glDrawArrays(GL_LINE_STRIP, 0, (GLsizei) segs+additionalSegment);
+	
+	// restore default state
+	glEnableClientState(GL_COLOR_ARRAY);
+	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+	glEnable(GL_TEXTURE_2D);	
+	
+	free( vertices );
+}
+
+void ccDrawQuadBezier(CGPoint origin, CGPoint control, CGPoint destination, NSUInteger segments)
+{
+	ccVertex2F vertices[segments + 1];
+	
+	float t = 0.0f;
+	for(NSUInteger i = 0; i < segments; i++)
+	{
+		GLfloat x = powf(1 - t, 2) * origin.x + 2.0f * (1 - t) * t * control.x + t * t * destination.x;
+		GLfloat y = powf(1 - t, 2) * origin.y + 2.0f * (1 - t) * t * control.y + t * t * destination.y;
+		vertices[i] = (ccVertex2F) {x * CC_CONTENT_SCALE_FACTOR(), y * CC_CONTENT_SCALE_FACTOR() };
+		t += 1.0f / segments;
+	}
+	vertices[segments] = (ccVertex2F) {destination.x * CC_CONTENT_SCALE_FACTOR(), destination.y * CC_CONTENT_SCALE_FACTOR() };
+	
+	// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
+	// Needed states: GL_VERTEX_ARRAY, 
+	// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY	
+	glDisable(GL_TEXTURE_2D);
+	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+	glDisableClientState(GL_COLOR_ARRAY);
+	
+	glVertexPointer(2, GL_FLOAT, 0, vertices);	
+	glDrawArrays(GL_LINE_STRIP, 0, (GLsizei) segments + 1);
+	
+	// restore default state
+	glEnableClientState(GL_COLOR_ARRAY);
+	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+	glEnable(GL_TEXTURE_2D);	
+}
+
+void ccDrawCubicBezier(CGPoint origin, CGPoint control1, CGPoint control2, CGPoint destination, NSUInteger segments)
+{
+	ccVertex2F vertices[segments + 1];
+	
+	float t = 0;
+	for(NSUInteger i = 0; i < segments; i++)
+	{
+		GLfloat x = powf(1 - t, 3) * origin.x + 3.0f * powf(1 - t, 2) * t * control1.x + 3.0f * (1 - t) * t * t * control2.x + t * t * t * destination.x;
+		GLfloat y = powf(1 - t, 3) * origin.y + 3.0f * powf(1 - t, 2) * t * control1.y + 3.0f * (1 - t) * t * t * control2.y + t * t * t * destination.y;
+		vertices[i] = (ccVertex2F) {x * CC_CONTENT_SCALE_FACTOR(), y * CC_CONTENT_SCALE_FACTOR() };
+		t += 1.0f / segments;
+	}
+	vertices[segments] = (ccVertex2F) {destination.x * CC_CONTENT_SCALE_FACTOR(), destination.y * CC_CONTENT_SCALE_FACTOR() };
+	
+	// Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY
+	// Needed states: GL_VERTEX_ARRAY, 
+	// Unneeded states: GL_TEXTURE_2D, GL_TEXTURE_COORD_ARRAY, GL_COLOR_ARRAY	
+	glDisable(GL_TEXTURE_2D);
+	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+	glDisableClientState(GL_COLOR_ARRAY);
+	
+	glVertexPointer(2, GL_FLOAT, 0, vertices);	
+	glDrawArrays(GL_LINE_STRIP, 0, (GLsizei) segments + 1);
+	
+	// restore default state
+	glEnableClientState(GL_COLOR_ARRAY);
+	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+	glEnable(GL_TEXTURE_2D);	
+}
-- 
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