diff options
Diffstat (limited to 'src/models.c')
| -rw-r--r-- | src/models.c | 104 |
1 files changed, 52 insertions, 52 deletions
diff --git a/src/models.c b/src/models.c index 80d9a13a..8a36c279 100644 --- a/src/models.c +++ b/src/models.c @@ -55,7 +55,6 @@ extern unsigned int whiteTexture; //---------------------------------------------------------------------------------- // Module specific Functions Declaration //---------------------------------------------------------------------------------- -static float GetHeightValue(Color pixel); static Mesh LoadOBJ(const char *fileName); //---------------------------------------------------------------------------------- @@ -557,7 +556,7 @@ void DrawGizmo(Vector3 position) // Load a 3d model (from file) Model LoadModel(const char *fileName) { - Model model; + Model model = { 0 }; Mesh mesh = { 0 }; // NOTE: Initialize default data for model in case loading fails, maybe a cube? @@ -608,17 +607,19 @@ Model LoadModelEx(Mesh data) } // Load a heightmap image as a 3d model -Model LoadHeightmap(Image heightmap, float maxHeight) +// NOTE: model map size is defined in generic units +Model LoadHeightmap(Image heightmap, Vector3 size) { + #define GRAY_VALUE(c) ((c.r+c.g+c.b)/3) + Mesh mesh; int mapX = heightmap.width; int mapZ = heightmap.height; - Color *heightmapPixels = GetImageData(heightmap); + Color *pixels = GetImageData(heightmap); // NOTE: One vertex per pixel - // TODO: Consider resolution when generating model data? int numTriangles = (mapX-1)*(mapZ-1)*2; // One quad every four pixels mesh.vertexCount = numTriangles*3; @@ -634,7 +635,7 @@ Model LoadHeightmap(Image heightmap, float maxHeight) int trisCounter = 0; - float scaleFactor = maxHeight/255; // TODO: Review scaleFactor calculation + Vector3 scaleFactor = { size.x/mapX, size.y/255.0f, size.z/mapZ }; for(int z = 0; z < mapZ-1; z++) { @@ -644,17 +645,17 @@ Model LoadHeightmap(Image heightmap, float maxHeight) //---------------------------------------------------------- // one triangle - 3 vertex - mesh.vertices[vCounter] = x; - mesh.vertices[vCounter + 1] = GetHeightValue(heightmapPixels[x + z*mapX])*scaleFactor; - mesh.vertices[vCounter + 2] = z; + mesh.vertices[vCounter] = (float)x*scaleFactor.x; + mesh.vertices[vCounter + 1] = (float)GRAY_VALUE(pixels[x + z*mapX])*scaleFactor.y; + mesh.vertices[vCounter + 2] = (float)z*scaleFactor.z; - mesh.vertices[vCounter + 3] = x; - mesh.vertices[vCounter + 4] = GetHeightValue(heightmapPixels[x + (z+1)*mapX])*scaleFactor; - mesh.vertices[vCounter + 5] = z+1; + mesh.vertices[vCounter + 3] = (float)x*scaleFactor.x; + mesh.vertices[vCounter + 4] = (float)GRAY_VALUE(pixels[x + (z + 1)*mapX])*scaleFactor.y; + mesh.vertices[vCounter + 5] = (float)(z + 1)*scaleFactor.z; - mesh.vertices[vCounter + 6] = x+1; - mesh.vertices[vCounter + 7] = GetHeightValue(heightmapPixels[(x+1) + z*mapX])*scaleFactor; - mesh.vertices[vCounter + 8] = z; + mesh.vertices[vCounter + 6] = (float)(x + 1)*scaleFactor.x; + mesh.vertices[vCounter + 7] = (float)GRAY_VALUE(pixels[(x + 1) + z*mapX])*scaleFactor.y; + mesh.vertices[vCounter + 8] = (float)z*scaleFactor.z; // another triangle - 3 vertex mesh.vertices[vCounter + 9] = mesh.vertices[vCounter + 6]; @@ -665,21 +666,21 @@ Model LoadHeightmap(Image heightmap, float maxHeight) mesh.vertices[vCounter + 13] = mesh.vertices[vCounter + 4]; mesh.vertices[vCounter + 14] = mesh.vertices[vCounter + 5]; - mesh.vertices[vCounter + 15] = x+1; - mesh.vertices[vCounter + 16] = GetHeightValue(heightmapPixels[(x+1) + (z+1)*mapX])*scaleFactor; - mesh.vertices[vCounter + 17] = z+1; + mesh.vertices[vCounter + 15] = (float)(x + 1)*scaleFactor.x; + mesh.vertices[vCounter + 16] = (float)GRAY_VALUE(pixels[(x + 1) + (z + 1)*mapX])*scaleFactor.y; + mesh.vertices[vCounter + 17] = (float)(z + 1)*scaleFactor.z; vCounter += 18; // 6 vertex, 18 floats // Fill texcoords array with data //-------------------------------------------------------------- - mesh.texcoords[tcCounter] = (float)x / (mapX-1); - mesh.texcoords[tcCounter + 1] = (float)z / (mapZ-1); + mesh.texcoords[tcCounter] = (float)x/(mapX - 1); + mesh.texcoords[tcCounter + 1] = (float)z/(mapZ - 1); - mesh.texcoords[tcCounter + 2] = (float)x / (mapX-1); - mesh.texcoords[tcCounter + 3] = (float)(z+1) / (mapZ-1); + mesh.texcoords[tcCounter + 2] = (float)x/(mapX - 1); + mesh.texcoords[tcCounter + 3] = (float)(z + 1)/(mapZ - 1); - mesh.texcoords[tcCounter + 4] = (float)(x+1) / (mapX-1); - mesh.texcoords[tcCounter + 5] = (float)z / (mapZ-1); + mesh.texcoords[tcCounter + 4] = (float)(x + 1)/(mapX - 1); + mesh.texcoords[tcCounter + 5] = (float)z/(mapZ - 1); mesh.texcoords[tcCounter + 6] = mesh.texcoords[tcCounter + 4]; mesh.texcoords[tcCounter + 7] = mesh.texcoords[tcCounter + 5]; @@ -687,13 +688,12 @@ Model LoadHeightmap(Image heightmap, float maxHeight) mesh.texcoords[tcCounter + 8] = mesh.texcoords[tcCounter + 2]; mesh.texcoords[tcCounter + 9] = mesh.texcoords[tcCounter + 3]; - mesh.texcoords[tcCounter + 10] = (float)(x+1) / (mapX-1); - mesh.texcoords[tcCounter + 11] = (float)(z+1) / (mapZ-1); + mesh.texcoords[tcCounter + 10] = (float)(x + 1)/(mapX - 1); + mesh.texcoords[tcCounter + 11] = (float)(z + 1)/(mapZ - 1); tcCounter += 12; // 6 texcoords, 12 floats // Fill normals array with data //-------------------------------------------------------------- - // NOTE: Current Model implementation doe not use normals! for (int i = 0; i < 18; i += 3) { mesh.normals[nCounter + i] = 0.0f; @@ -704,12 +704,11 @@ Model LoadHeightmap(Image heightmap, float maxHeight) // TODO: Calculate normals in an efficient way nCounter += 18; // 6 vertex, 18 floats - trisCounter += 2; } } - free(heightmapPixels); + free(pixels); // Fill color data // NOTE: Not used any more... just one plain color defined at DrawModel() @@ -1149,14 +1148,14 @@ void DrawModel(Model model, Vector3 position, float scale, Color tint) Vector3 vScale = { scale, scale, scale }; Vector3 rotationAxis = { 0.0f, 0.0f, 0.0f }; - DrawModelEx(model, position, 0.0f, rotationAxis, vScale, tint); + DrawModelEx(model, position, rotationAxis, 0.0f, vScale, tint); } // Draw a model with extended parameters -void DrawModelEx(Model model, Vector3 position, float rotationAngle, Vector3 rotationAxis, Vector3 scale, Color tint) +void DrawModelEx(Model model, Vector3 position, Vector3 rotationAxis, float rotationAngle, Vector3 scale, Color tint) { // NOTE: Rotation must be provided in degrees, it's converted to radians inside rlglDrawModel() - rlglDrawModel(model, position, rotationAngle, rotationAxis, scale, tint, false); + rlglDrawModel(model, position, rotationAxis, rotationAngle, scale, tint, false); } // Draw a model wires (with texture if set) @@ -1165,14 +1164,14 @@ void DrawModelWires(Model model, Vector3 position, float scale, Color color) Vector3 vScale = { scale, scale, scale }; Vector3 rotationAxis = { 0.0f, 0.0f, 0.0f }; - rlglDrawModel(model, position, 0.0f, rotationAxis, vScale, color, true); + rlglDrawModel(model, position, rotationAxis, 0.0f, vScale, color, true); } // Draw a model wires (with texture if set) with extended parameters -void DrawModelWiresEx(Model model, Vector3 position, float rotationAngle, Vector3 rotationAxis, Vector3 scale, Color tint) +void DrawModelWiresEx(Model model, Vector3 position, Vector3 rotationAxis, float rotationAngle, Vector3 scale, Color tint) { // NOTE: Rotation must be provided in degrees, it's converted to radians inside rlglDrawModel() - rlglDrawModel(model, position, rotationAngle, rotationAxis, scale, tint, true); + rlglDrawModel(model, position, rotationAxis, rotationAngle, scale, tint, true); } // Draw a billboard @@ -1275,6 +1274,20 @@ void DrawBillboardRec(Camera camera, Texture2D texture, Rectangle sourceRec, Vec rlDisableTexture(); } +// Draw a bounding box with wires +void DrawBoundingBox(BoundingBox box) +{ + Vector3 size; + + size.x = fabsf(box.max.x - box.min.x); + size.y = fabsf(box.max.y - box.min.y); + size.z = fabsf(box.max.z - box.min.z); + + Vector3 center = { box.min.x + size.x/2.0f, box.min.y + size.y/2.0f, box.min.z + size.z/2.0f }; + + DrawCubeWires(center, size.x, size.y, size.z, GREEN); +} + // Detect collision between two spheres bool CheckCollisionSpheres(Vector3 centerA, float radiusA, Vector3 centerB, float radiusB) { @@ -1401,10 +1414,8 @@ bool CheckCollisionRayBox(Ray ray, Vector3 minBBox, Vector3 maxBBox) return collision; } -// TODO: Useful function to check collision area? -//BoundingBox GetCollisionArea(BoundingBox box1, BoundingBox box2) - // Calculate mesh bounding box limits +// NOTE: minVertex and maxVertex should be transformed by model transform matrix (position, scale, rotate) BoundingBox CalculateBoundingBox(Mesh mesh) { // Get min and max vertex to construct bounds (AABB) @@ -1413,15 +1424,10 @@ BoundingBox CalculateBoundingBox(Mesh mesh) for (int i = 1; i < mesh.vertexCount; i++) { - // TODO: Compare min and max with previous vertex - //minVertex = Vector3.Min(minVertex, mesh.vertices[i]); - //maxVertex = Vector3.Max(maxVertex, mesh.vertices[i]); + minVertex = VectorMin(minVertex, (Vector3){ mesh.vertices[i*3], mesh.vertices[i*3 + 1], mesh.vertices[i*3 + 2] }); + maxVertex = VectorMax(maxVertex, (Vector3){ mesh.vertices[i*3], mesh.vertices[i*3 + 1], mesh.vertices[i*3 + 2] }); } - - // NOTE: For OBB, transform mesh by model transform matrix - //minVertex = VectorTransform(meshMin, mesh.transform); - //maxVertex = VectorTransform(meshMax, mesh.transform); - + // Create the bounding box BoundingBox box; box.min = minVertex; @@ -1681,12 +1687,6 @@ Vector3 ResolveCollisionCubicmap(Image cubicmap, Vector3 mapPosition, Vector3 *p // Module specific Functions Definition //---------------------------------------------------------------------------------- -// Get current vertex y altitude (proportional to pixel colors in grayscale) -static float GetHeightValue(Color pixel) -{ - return (((float)pixel.r + (float)pixel.g + (float)pixel.b)/3); -} - // Load OBJ mesh data static Mesh LoadOBJ(const char *fileName) { |