.

openalgorithmdevelopers · openalgorithmdevelopers · commit be0ce66a94d6 · 2023-05-30T17:19:18.000+05:30
diff --git a/Book example codes/Chapter 3/2.0/3_First WebGL program_js.js b/Book example codes/Chapter 3/2.0/3_First WebGL program_js.js
@@ -4,7 +4,7 @@ var WebGL = function () {
 	gl = initializeWebGL(gl);
 
 	//Step 1 (Set background color): First specify the color with the help of Quadlet(R,G,B,Alpha) and the clear the buffer related to background.
-	gl.clearColor(0, 0, 0, 1.0);	
+	gl.clearColor(0.5, 0, 0, 1.0);	
 	gl.clear(gl.COLOR_BUFFER_BIT);
 	//Note: The default background color in WebGl is white.
 
@@ -71,7 +71,7 @@ var WebGL = function () {
 	//gl.drawElements(gl.LINES, IndicesArrayJS.length, gl.UNSIGNED_SHORT, 0);
 	//gl.drawElements(gl.LINE_STRIP, IndicesArrayJS.length, gl.UNSIGNED_SHORT, 0);
 	//gl.drawElements(gl.LINE_LOOP, IndicesArrayJS.length, gl.UNSIGNED_SHORT, 0);
-	gl.drawElements(gl.TRIANGLES, IndicesArrayJS.length, gl.UNSIGNED_SHORT, 0);
+	gl.drawElements(gl.LINES, IndicesArrayJS.length, gl.UNSIGNED_SHORT, 0);
 };
 
 function initializeWebGL(gl)
@@ -97,6 +97,7 @@ function getShaderProgram(gl)
 		void main()
 		{
 			gl_Position = vec4(geometryCoordinatesGPU, 1.0); 
+			gl_PointSize = 5.0;
 		}`;
 
 	//Step 8 (Create actual vertex shader): Create the actual vertex shader with the text defined in Step 1.
diff --git a/Book example codes/Chapter 6/2.0/6_Tri_color_triangle_js.js b/Book example codes/Chapter 6/2.0/6_Tri_color_triangle_js.js
@@ -11,9 +11,9 @@ var WebGL = function () {
 	//Step 2 (Speficy vertices data): Speficy the coordinates (X,Y,Z) of the geometry and the color information related to each coordinates.
 	var verticesDataArrayJS = 
 	[	//X 	Y 		Z      	R  G  B       
-		0.0, 	0.8, 	0,   	1, 0, 0, 	//Vertex A
+		0.0, 	0.8, 	0,   	0, 1, 0, 	//Vertex A
 		0.8, 	-0.8, 	0, 		0, 1, 0,	//Vertex B
-		-0.8, 	-0.8, 	0, 		0, 0, 1		//Vertex C
+		-0.8, 	-0.8, 	0, 		0, 1, 		//Vertex C
 	];  
 
 	//Step 3 (Specify how to connect the points): Specify the order with which the coordinates defined in Step2 will be joined.
diff --git a/Book example codes/Chapter 8/2.0/8_3D_cuboid.HTML b/Book example codes/Chapter 8/2.0/8_3D_cuboid.HTML
@@ -103,16 +103,6 @@
                     gl_Position = projMatGPU * viewMatGPU * vec4(verticesGPU, 1.0);
                 }`;
 
-                // var vertexShaderText = 
-                //     ' precision mediump float; ' +
-                //     ' attribute vec3 verticesGPU; ' +
-                //     ' uniform mat4 projMatGPU; '+
-                //     ' uniform mat4 viewMatGPU; '+
-                //     ' void main() ' +
-                //     ' { ' +
-                //     '		gl_Position = projMatGPU * viewMatGPU * vec4(verticesGPU, 1.0); ' +
-                //     ' } ';
-
                 var fragmentShaderText = `#version 300 es
                 #pragma vscode_glsllint_stage: frag
                 precision mediump float;
