Review and recompile web examples

1 files changed, 195 insertions, 0 deletions

diff --git a/docs/examples/src/models/models_mesh_picking.c b/docs/examples/src/models/models_mesh_picking.c
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index 00000000..0b5247ec
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+++ b/docs/examples/src/models/models_mesh_picking.c
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+/*******************************************************************************************
+*
+*   raylib [models] example - Mesh picking in 3d mode, ground plane, triangle, mesh
+*
+*   This example has been created using raylib 1.7 (www.raylib.com)
+*   raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
+*
+*   Copyright (c) 2015 Ramon Santamaria (@raysan5)
+*   Example contributed by Joel Davis (@joeld42)
+*
+********************************************************************************************/
+
+#include "raylib.h"
+#include "raymath.h"
+
+#define FLT_MAX     3.40282347E+38F     // Maximum value of a float, defined in <float.h>
+
+int main()
+{
+    // Initialization
+    //--------------------------------------------------------------------------------------
+    int screenWidth = 800;
+    int screenHeight = 450;
+
+    InitWindow(screenWidth, screenHeight, "raylib [models] example - mesh picking");
+
+    // Define the camera to look into our 3d world
+    Camera camera;
+    camera.position = (Vector3){ 10.0f, 8.0f, 10.0f };  // Camera position
+    camera.target = (Vector3){ 0.0f, 2.3f, 0.0f };      // Camera looking at point
+    camera.up = (Vector3){ 0.0f, 1.6f, 0.0f };          // Camera up vector (rotation towards target)
+    camera.fovy = 45.0f;                                // Camera field-of-view Y
+
+    Ray ray;        // Picking ray
+    
+    Model tower = LoadModel("resources/tower.obj");             // Load OBJ model
+    Texture2D texture = LoadTexture("resources/tower.png");     // Load model texture
+    tower.material.texDiffuse = texture;                        // Set model diffuse texture
+    
+    Vector3 towerPos = { 0.0f, 0.0f, 0.0f };                    // Set model position
+    BoundingBox towerBBox = CalculateBoundingBox(tower.mesh);    
+    bool hitMeshBBox = false;
+    bool hitTriangle = false;
+
+    // Test triangle
+    Vector3 ta = (Vector3){ -25.0, 0.5, 0.0 };    
+    Vector3 tb = (Vector3){ -4.0, 2.5, 1.0 };
+    Vector3 tc = (Vector3){ -8.0, 6.5, 0.0 };
+
+    Vector3 bary = { 0.0f, 0.0f, 0.0f }; 
+
+    SetCameraMode(camera, CAMERA_FREE); // Set a free camera mode
+
+    SetTargetFPS(60);                   // Set our game to run at 60 frames-per-second
+    //--------------------------------------------------------------------------------------
+    // Main game loop
+    while (!WindowShouldClose())        // Detect window close button or ESC key
+    {
+        // Update
+        //----------------------------------------------------------------------------------
+        UpdateCamera(&camera);          // Update camera
+        
+        // Display information about closest hit
+        RayHitInfo nearestHit;
+        char *hitObjectName = "None";
+        nearestHit.distance = FLT_MAX;
+        nearestHit.hit = false;
+        Color cursorColor = WHITE;
+
+        // Get ray and test against ground, triangle, and mesh
+        ray = GetMouseRay(GetMousePosition(), camera);
+        
+        // Check ray collision aginst ground plane
+        RayHitInfo groundHitInfo = GetCollisionRayGround(ray, 0.0f);
+        
+        if ((groundHitInfo.hit) && (groundHitInfo.distance < nearestHit.distance))
+        {
+            nearestHit = groundHitInfo;
+            cursorColor = GREEN;
+            hitObjectName = "Ground";
+        }
+
+        // Check ray collision against test triangle
+        RayHitInfo triHitInfo = GetCollisionRayTriangle(ray, ta, tb, tc);
+        
+        if ((triHitInfo.hit) && (triHitInfo.distance < nearestHit.distance)) 
+        {
+            nearestHit = triHitInfo;
+            cursorColor = PURPLE;
+            hitObjectName = "Triangle";
+
+            bary = VectorBarycenter(nearestHit.hitPosition, ta, tb, tc);
+            hitTriangle = true;
+        } 
+        else hitTriangle = false;
+
+        RayHitInfo meshHitInfo;
+
+        // Check ray collision against bounding box first, before trying the full ray-mesh test
+        if (CheckCollisionRayBox(ray, towerBBox)) 
+        {
+            hitMeshBBox = true;
+            
+            // Check ray collision against mesh
+            meshHitInfo = GetCollisionRayMesh(ray, &tower.mesh);    
+            
+            if ((meshHitInfo.hit) && (meshHitInfo.distance < nearestHit.distance)) 
+            {
+                nearestHit = meshHitInfo;
+                cursorColor = ORANGE;
+                hitObjectName = "Mesh";
+            }
+            
+        } hitMeshBBox = false; 
+        //----------------------------------------------------------------------------------
+        
+        // Draw
+        //----------------------------------------------------------------------------------
+        BeginDrawing();
+
+            ClearBackground(RAYWHITE);
+
+            Begin3dMode(camera);
+
+                // Draw the tower
+                DrawModel(tower, towerPos, 1.0, WHITE);
+                
+                // Draw the test triangle
+                DrawLine3D(ta, tb, PURPLE);
+                DrawLine3D(tb, tc, PURPLE);
+                DrawLine3D(tc, ta, PURPLE);
+
+                // Draw the mesh bbox if we hit it
+                if (hitMeshBBox) DrawBoundingBox(towerBBox, LIME);
+
+                // If we hit something, draw the cursor at the hit point
+                if (nearestHit.hit) 
+                {
+                    DrawCube(nearestHit.hitPosition, 0.3, 0.3, 0.3, cursorColor);
+                    DrawCubeWires(nearestHit.hitPosition, 0.3, 0.3, 0.3, RED);
+
+                    Vector3 normalEnd;
+                    normalEnd.x = nearestHit.hitPosition.x + nearestHit.hitNormal.x;
+                    normalEnd.y = nearestHit.hitPosition.y + nearestHit.hitNormal.y;
+                    normalEnd.z = nearestHit.hitPosition.z + nearestHit.hitNormal.z;
+                    
+                    DrawLine3D(nearestHit.hitPosition, normalEnd, RED);
+                }
+
+                DrawRay(ray, MAROON);
+                
+                DrawGrid(100, 1.0f);
+
+            End3dMode();
+            
+            // Draw some debug GUI text
+            DrawText(FormatText("Hit Object: %s", hitObjectName), 10, 50, 10, BLACK);
+
+            if (nearestHit.hit) 
+            {
+                int ypos = 70;
+
+                DrawText(FormatText("Distance: %3.2f", nearestHit.distance), 10, ypos, 10, BLACK);
+                
+                DrawText(FormatText("Hit Pos: %3.2f %3.2f %3.2f", 
+                                    nearestHit.hitPosition.x, 
+                                    nearestHit.hitPosition.y, 
+                                    nearestHit.hitPosition.z), 10, ypos + 15, 10, BLACK);
+                                    
+                DrawText(FormatText("Hit Norm: %3.2f %3.2f %3.2f", 
+                                    nearestHit.hitNormal.x, 
+                                    nearestHit.hitNormal.y, 
+                                    nearestHit.hitNormal.z), 10, ypos + 30, 10, BLACK);
+
+                if (hitTriangle) DrawText(FormatText("Barycenter: %3.2f %3.2f %3.2f",  bary.x, bary.y, bary.z), 10, ypos + 45, 10, BLACK);
+            }
+
+            DrawText("Use Mouse to Move Camera", 10, 430, 10, GRAY);
+
+            DrawFPS(10, 10);
+
+        EndDrawing();
+        //----------------------------------------------------------------------------------
+    }
+
+    // De-Initialization
+    //--------------------------------------------------------------------------------------
+    UnloadModel(tower);         // Unload model
+    UnloadTexture(texture);     // Unload texture
+    
+    CloseWindow();              // Close window and OpenGL context
+    //--------------------------------------------------------------------------------------
+
+    return 0;
+}
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