Shaders modif

src/engine/object/ObjectGl.java

@@ -3,6 +3,8 @@ package engine.object;
 import engine.graphics.*;
 import engine.math.*;
 
+import static org.lwjgl.glfw.GLFW.glfwGetTime;
+
 /**
  *
  */
@@ -30,6 +32,8 @@ public class ObjectGl {
     private float height;
     private float scalingFactor;
 
+    public boolean useTime;
+
     private Texture texture;
 
     /**
@@ -57,15 +61,17 @@ public class ObjectGl {
             this.texture = new Texture(tex, 0);
         }
 
-        this.vertexArray = new VertexArray(Primitive.createRectangle(z, w, h), Primitive.rectangle_indices, colorBuffer, Primitive.stdTexWrap);
-
         this.zPos = z;
         this.height = h;
         this.width = w;
+
+        this.vertexArray = new VertexArray(Primitive.createRectangle(this.zPos, this.width, this.height), Primitive.rectangle_indices, colorBuffer, Primitive.stdTexWrap);
+
         this.scalingFactor = size;
         this.transform = Matrix4f.identity();
         this.scale(new Vector3f(size, size,1f));
         this.stick_state = DEFAULT;
+        this.useTime = false;
 
         // use different shader for each set of option
         if (tex == null && color == null){
@@ -177,6 +183,29 @@ public class ObjectGl {
         this.setTextureWrap(result);
     }
 
+    /**
+     * Set a new shader to be used by this object
+     * @param vert path to glsl Vertex Shader
+     * @param frag path to glsl Fragment Shader
+     */
+    public void setShader(String vert, String frag){
+        this.shader = new Shader(vert, frag);
+    }
+
+    /**
+     * Set a new Color for the object if the shader do not use the color attrib this will make no change.
+     * @param color Vector3f r,g,b format
+     */
+    public void setColor(Vector3f color){
+        float[] colorBuffer = new float[] {
+                color.x, color.y, color.z,
+                color.x, color.y, color.z,
+                color.x, color.y, color.z,
+                color.x, color.y, color.z
+        };
+        this.vertexArray = new VertexArray(Primitive.createRectangle(this.zPos, this.width, this.height), Primitive.rectangle_indices, colorBuffer, Primitive.stdTexWrap);
+    }
+
     private void setTextureWrap(float[] texture){
         this.vertexArray.swapTextureBufferObject(texture);
     }
@@ -189,9 +218,12 @@ public class ObjectGl {
      * Do shader binding, texture binding and vertexArray drawing
      */
     public void render(){
+
         this.shader.enable();
         if (this.texture != null) this.texture.bind();
 
+        if (this.useTime) this.shader.setUniform1f("time", (float) glfwGetTime());
+
         this.shader.setUniformMat4f("projection", projection);
         this.shader.setUniformMat4f("view", view);
         this.shader.setUniformMat4f("transform", this.transform);